Duramax Oil Leak Problems

The turbo coolant inlet fittings are regular offenders but are simple to replace. #6 · Dec 21, 2010. This may apply to mo. Turbo Failure: One of the biggest issues the 6. For an in-depth look at the top four pattern problems for each engine, keep scrolling. Duramax Gauge Installation. A Low Coolant message may be displayed on the Driver Information Center of some 2017-2018 Silverado and Sierra models equipped with the 6. chevy dealer says both head. No way they can tell me they are told by gm people that could that problem. (Service writer was confused) Well, at 30,000 I noticed more oil dripping down at the back of the block. If enough coolant leaks from the radiator or oil cooler, it can result in engine overheating problems and mechanical component failure. No engine check lights came on. Pre-ignition of your fuel. Duramax fuel system was engineered for this fuel and will live a long life under normal conditions. Catastrophic failure of your oil cooler can. Cracking a fuel line loose on a running Duramax engine could easily be fatal. GMC and Chevy Duramax LB7 6. I just got the truck about 3 weeks ago and within 2 hours of picking it up I noticed a massive oil leak (1. view details; nov 01, 2011 - bremond, tx - diesel on 10/29/2011 the engine was blowing grayish white smoke. It's common, particularly on 2001-to-2007 LB7 models, for the filter housing before the filter to develop cracks and leaks in the O-ring, allowing air to enter the system. The leak appears on the ground at the front driver side under the left fron of motor (or so it appears) and leaks when running and for a while after being shut off. A common problem with high-mileage 2001-2010 Duramax trucks is that the fuel filter head assembly begins to develop air leaks. 6L LB7 Duramax problems and how to fix them. Interrnal engine malfuntion your piston rinns or seals or possibly your valve seals are damadged i would start with a compressing test of all the cylinders in the engine. 7L Power Stroke Oil Leak From the Vacuum Pump Gasket. This is an older thread, you may not receive a response, and could be reviving an old thread. The 2019 has the new L5P Duramax thst no longer uses the CP4. 208 Answers. Hello all I'm a newbie to the forum so all help is appreciated. The Stock lower Oil Pan is a compromised design and it has a Hump" made by the transverse frame member that traps over two cups (two-thirds of a QUART!) of un-drainable, used, contaminated oil that. Chrysler 3. Arrived home and backed into the shop, noticed oil EVERYWHERE on the ground. My truck is on 34000 and still leaks oil or trans. Interrnal engine malfuntion your piston rinns or seals or possibly your valve seals are damadged i would start with a compressing test of all the cylinders in the engine. No engine check lights came on. Sign up for FREE! Become a GM-Trucks. (Service writer was confused) Well, at 30,000 I noticed more oil dripping down at the back of the block. The Duramax L5P was introduced in 2017 as a replacement for the LML. 0L Power Stroke. Hey guys seems to be problem after problem with my truck but i guess thats how it is lol. An ammonia coolant leak was first discovered on the station in 2007. In terms of LLY injector problems, GM had sorted out the internal failures with the 2004 ½ redesign, but the LLY Duramax would occasionally exhibit a trouble code for the injectors, but in most cases it turned out to be an issue with the injector harness rubbing through and causing a short or open in the wiring. We highly recommend Amsoil Heavy Duty 15W-40 full synthetic engine oil for all Duramax diesel applications, or Amsoil Heavy Duty 5W-40 full synthetic engine oil for cold weather operation. The EGR problems only become an issue at high mileage. PPE solves these problems. An EGR Delete capable race tuner is required in conjunction with this kit. This will cause your engine to overheat because of all the moving components that rub together and generate intense heat. Using a fuel additive such as AMSOIL Diesel Concentrate can help the fuel burn cleaner and therefore reduce particulate build-up. The Duramax has long been susceptible to fuel starvation failures because the engine doesn't use a lift pump to feed the primary pressure pump. The EGR problems only become an issue at high mileage. What would cause this problem?? Thanks In advance for any help!. 208 Answers. An ammonia coolant leak was first discovered on the station in 2007. the oil level was 6" higher on dipstick. If enough coolant leaks from the radiator or oil cooler, it can result in engine overheating problems and mechanical component failure. Duramax Leaks galore. (Or every 80K miles) Step 3. The dealer told me it's due to cracked fuel injector(s) and was leaking oil into the crankcase. Duramax engines are beasts with true power for any vehicle. What kind of oil do I need for a Duramax Diesel? At < $10, this is cheap insurance against preventable oil leaks. com Member Today! In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. Low Fluid or Leak. The '04 LLY has new heads, the injectors have been located OUTSIDE the valve covers so if one leaks, diesel fuel runs down the outside of the engine instead of inside where it could mix with the oil. I'd read that in forums, but could not find any informatio. Please consider creating a new thread. Blowing white smoke is a red flag for your diesel engine, yet we see this happen all the time to our customers. 5 diesel production and plant to AMG because GM in a joint venture with Isuzu is using the new Duramax direct injection diesel in all it's light diesel trucks. Leaking oil is never a good sign. This engine is used in everything from an E-Class sedan up to the 3500 dually Sprinter vans. The water pump is one of the most dreaded problems found on these trucks because of how much of a pain they are to fix. The '01 Duramax has the fuel injectors located under the valve covers, so if one leaks, you can get diesel fuel mixed into the crankcase oil. The following highlights some of the main causes and signs of oil leaks. Cracking a fuel line loose on a running Duramax engine could easily be fatal. fluid on driveway every night. Inspect for other oil leaks that may be perceived as an oil cooler leak. It’s off-putting and heavy, and could turn your stomach. On most modern engines, the seal's failure is due to a condition inside the engine or a component connected to the back of the engine. What would cause this problem?? Thanks In advance for any help!. problems Duramax transfer case. The LBZ is revered for its tune-only performance capabilities. Don't go there. Another place to look is the oil cooler adapter, which connects oil lines and is itself sealed with a gasket. Loosing a 1 Qt of oil if 50-60 miles is excessive and doubt that all the oil is leaking past his seals in the turbo, turbo seal gap is. • This is one of the most highly recommended motor oils across the board. Hi anybody have a clue on this, my 02 has an oil leak and its been at the dealer for 3 weeks. "Evolution of the Duramax" As with most pickups in the industry, the Duramax line of diesel engines has come a long way from its inception to. Left too long, a faulty fuel injector can cause serious engine damage that requires major repair. If the to bottom inner round gasket fail, you will mostly get coolant in the engine oil or oil in the coolant. 6L Duramax V8 turbo-diesel came to the market in a GM heavy duty pickup in 2001. My 2002 just turned 61k miles and I just noticed an oil leak on the drivers side of the engine block coming down from the top rear of the engine. Check for DTC. Common Symptoms- When a fuel injector fails, you may experience hard starting, misfires, or an engine that lacks power. The dealer first said it was the turbo return lines. It has been g. LB7 Duramax Injectors. 0L V6 Mercedes Diesel engine has proven to be a strong and reliable motor. Introduced in 2001 as a joint venture between GM and Isuzu, the Duramax V-8 was the General's bid to one-up Ford and Chrysler's newest generation of powerful and efficient diesels. 6 duramax oil in crank case. Black Smoke. If enough coolant leaks from the radiator or oil cooler, it can result in engine overheating problems and mechanical component failure. If there’s just a small amount of oil dripping underneath your vehicle, it’s likely not a leak; it’s just residual oil that wasn’t fully cleaned off under the vehicle after the change. Featured in the Silverado and Sierra HD work trucks (2500HD/3500HD), the L5P uses the same 6. the engine started losing oil pressure. Duramax Engine LLY 2004. #6 · Jun 29, 2017. Oil filter screws onto oil cooler and both oil and coolant goes through it. i have a 2001 duramax with a coolant leak coming from somewhere around the rear of the engine, shoes up above the the oil filter on the left side of the engine, replaced the o-rings for the oil cooler where it bolts onto the block above the oil filter, is there something else above that , that could be leaking that i cant see without pulling the trans or something. What would cause this problem?? Thanks In advance for any help!. PPE High Capacity Oil Pan (Cast Aluminum) Fits 2001-2016 Chevy/GMC Duramax 2500/3500HD. Duramax oil leak I have been wondering what has been causing my oil pressure toto show "damn near zero at idle" for awhile. The infamous Duramax oil leak that looks like a rear main is actually coming from the PCV system. It has been g. Brought it in to get the intermediate steering shaft. This engine is used in everything from an E-Class sedan up to the 3500 dually Sprinter vans. Why do I need low-ash oil for the LMM Duramax? GM says that most DPF's should run about 100,000 miles (160,000 kilometers) before they will require the ash loading to be cleaned. Featured in the Silverado and Sierra HD work trucks (2500HD/3500HD), the L5P uses the same 6. Seems to be coming out by the pulpy belt area somewhere. However, if leaks are evident outside the engine or there are oil drops on the floor, the leaking component should be fixed as soon as possible. OH GOD, GM is buying my 2015 LML LTZ Dually back (repurchase) for this EXACT oil leak. I was driving the truck yesterday and got a "check oil pressure" light on the dash and the guage was reading 0 oil. Oroville, CA. If you want one used already done up 4" lift a member has 1 with 6k miles for $67K I wish I could pull the trigger on it. The Stock lower Oil Pan is a compromised design and it has a Hump" made by the transverse frame member that traps over two cups (two-thirds of a QUART!) of un-drainable, used, contaminated oil that. In the mean time, take the coolant overflow cap off and rinse/soak it in in warm water for a few minutes. Had new timing guide put in and crank seal and oil pan. Woke up the other morning to find oil in my driveway from my 2002 Chevrolet duramax 2500. This supplement gives the test adapter set a larger variety of sizes to accommodate the newer style coolers that have multiple ports as shown below in Figure 1. Arrived home and backed into the shop, noticed oil EVERYWHERE on the ground. Nov 17, 2015. The three engines you refer to are known as medium duty in the industry not actually HD as has been mentioned by others. The upper. Between 350,000 and 500,000 miles is usually considered high mileage on a Cummins diesel. Please consider creating a new thread. Earning the top spot with over 6000 ratings is the Rotella T6 Full Synthetic Engine Oil by Shell. Joined Jan 17, 2011. I have been debating on 1. They still can't find were the leak is coming from. Duramax oil leak from bellhousing. Visible Coolant Leaks; Fix Your LLY Duramax Water Pump Problems. Duramax oil leak I have been wondering what has been causing my oil pressure toto show "damn near zero at idle" for awhile. Leaking oil is never a good sign. The 2011-2016 Duramax suffers from a high pressure fuel pump issue unique to this year range. High Mileage. Inspect for other oil leaks that may be perceived as an oil cooler leak. Oil pan/windage tray mating the bedplate. 3 Water Pump Leak Article – Fixing a 7. Pre-ignition of your fuel. Dealership wont return his calls. O rings used to seal oil plugs in the high pressure oil rail/system commonly fail on the 6. The turbo on these trucks is a fairly complicated unit. One of the worst problems is if the leak becomes very bad, the motor will consume mass-quantities of oil, which causes the motor to surge, regardless of your throttle position - and in some cases, will cause an "overrun" (where the motor goes faster and faster, and can exceed max revs, and may not even respond if you shut it off - it will just. fuel lines leaking. 02 duramax 6. 6 duramax oil in crank case. It has been g. Hi, I brought my '03 2500 in for an oil leak at about 25,000 miles and they fixed a leak on the back of either the block or the head. I just had the same problem. Ihave a problem with fuel in the oil. • This is one of the most highly recommended motor oils across the board. view details; nov 01, 2011 - bremond, tx - diesel on 10/29/2011 the engine was blowing grayish white smoke. 2017 Silverado and Sierra models equipped with the 6. Common Issues and Problems We See In The Shop With The LB7 6. Unless you replace the gasket that is likely causing the leak, the engine will become ruined if it overheats for too long. The infamous Duramax oil leak that looks like a rear main is actually coming from the PCV system. Injector Return Bolts 4. The truck only has 62k miles. I have a coolant leak in my '05 duramax LLY. In the mean time, take the coolant overflow cap off and rinse/soak it in in warm water for a few minutes. Determined to be rear main seal, installed. My first thought was the vacuum pump, installed a new oem gasket and put lock tite on the bolts and torqued down to specs. I see that 15W-40 oil is suggested for this engine. A leaking water pump seal can be the result of a bad head gasket (or LB7 injector cup seal leak), should compression pressure find its way into the cooling system. 6 duramax dieselI have a really bad oil leak when I turn truck on. Joined Jun 14, 2007. 6L Duramax diesel engine (RPO L5P). With various upgrades, this engine is easily capable of producing over 600whp and 1,000lb-ft. (Or every 80K miles) Step 3. Loosing a 1 Qt of oil if 50-60 miles is excessive and doubt that all the oil is leaking past his seals in the turbo, turbo seal gap is. view details; nov 01, 2011 - bremond, tx - diesel on 10/29/2011 the engine was blowing grayish white smoke. Oil leaks can cause catastrophic damage to the bearing systems and occur within seconds of the turbocharger commencing operation. #10 · Jan 17, 2011. customers would bring there trucks in complaining of low oil pressure. It also includes a variety of innovative engine technologies like ceramic glow plugs that heat up faster. Glow plug issues are more than likely fixed on any LLY by now. My nieghbor just bought this at a dealership 300 miles away. The three engines you refer to are known as medium duty in the industry not actually HD as has been mentioned by others. A Low Coolant message may be displayed on the Driver Information Center of some 2017-2018 Silverado and Sierra models equipped with the 6. The engine is a ground up design made to fit perfectly in those vehicles and produces 277 horsepower and 460 pound-feet of torque in the half-ton Silverado with a surprising peak torque at just 1,500 RPMs. The right fluid can lubricate the mechanism to retain functionality. 0L Duramax Turbo-Diesel Engine. It's common, particularly on 2001-to-2007 LB7 models, for the filter housing before the filter to develop cracks and leaks in the O-ring, allowing air to enter the system. Loosing a 1 Qt of oil if 50-60 miles is excessive and doubt that all the oil is leaking past his seals in the turbo, turbo seal gap is. The problem “could be” that pressure is building up in the cooling system. So even if you get 100,000 miles out of your original one, you should still be dreading when your water pump eventually does fail. Duramax Leaks galore. #6 · Dec 21, 2010. This is an older thread, you may not receive a response, and could be reviving an old thread. com Member Today! In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. problems Duramax transfer case. Got home and it is full again. Dealership wont return his calls. Glow plug issues are more than likely fixed on any LLY by now. 6l Duramax LBZ. One of the problems that plagued early injectors was a ball-seat leak. For low fuel filter pressure, check the onboard computer or dashboard alert light. 7L Power Stroke is associated with the vacuum pump. Try cleaning up the motor and undercarriage with some degreaser to remove the current oil and grime, then run it for a few minutes to see if you can pinpoint the leak. Anyway, the opinions on these things are often based on b. Overdrive Lockout Switch Installation. 0L EcoDiesel - Best Small Diesel Engine. The most are probably coming from where 3 pieces of metal join. This will cause your engine to overheat because of all the moving components that rub together and generate intense heat. Search: Duramax transfer case problems. Unplug them and clean them with electrical cleaner and plug unplug them a couple times. Common Symptoms- When a fuel injector fails, you may experience hard starting, misfires, or an engine that lacks power. No way they can tell me they are told by gm people that could that problem. It is not related to the 6. Duramax Engine LLY 2004. If you notice oil leaking from the oil filter, here are the first three places to investigate during your oil change:. #4 · Dec 26, 2005. 6L Duramax Diesel. 500 lb-ft, to the modern-day workhorse pushing towards 1000 lb-ft, in the. Between 350,000 and 500,000 miles is usually considered high mileage on a Cummins diesel. Can I use 5W-40 in the winter? Our answer: Yes, you can certainly use 5W-40 in winter (and summer) in your Duramax. OH GOD, GM is buying my 2015 LML LTZ Dually back (repurchase) for this EXACT oil leak. This highlights a major service issue on the early Duramax engines - a no start condition brought on by an excessive high-pressure side fuel leak. I'm only gonna post this for only oily leaks on their 2015 chev. 6L Duramax has been in production since 2001 and has proved, on a large scale, to be a relatively reliable and durable platform. In this cutaway shot of the Duramax engine, we see an oil squirter (A) and the oil heat exchanger (B) that transfers heat from the oil to the radiator fluid. Had new timing guide put in and crank seal and oil pan. If you notice oil leaking from the oil filter, here are the first three places to investigate during your oil change: Gasket and seals are a common spot for problems. Block mating the bed plate. My nieghbor just bought this at a dealership 300 miles away. If there is no fuel in the engine oil and the crankcase is not overfilled with oil, check for a sticking or inoperative PCV check valve. Just an aside; GM sold the 6. Duramaxdiesels. Arguably the most common issue on the 6. Most oil leaks stem from bad connections or cracked oil pans, engine gaskets or seals. It's still dripping/leaking. Oil Rail & Plug Leaks. Discussion Starter · #1 · Dec 6, 2004. 2016 White Colorado LT 2WD Ext. Called the Ford dealer to get it in for warranty repair. Fullsize Truck & SUV - 2014-2019 K2XX Platform. (Or every 80K miles) Step 3. When the engine consumes a quart of oil every 1,000-2,000 miles, an overhaul is needed. 3 Powerstroke Common Problem #9 – Fuel Bowl Heater. I have a coolant leak in my '05 duramax LLY. 6L Duramax diesel engine (RPO L5P) may display a Driver Information Center low coolant message or may show coolant consumption or a coolant leak. The fix if you wanted to keep this A/C is to run external breathers as it would clean up your issue as well as keeping the engine from having to burn up the blow-by. I pressure checked it and it does not seem like it is coming above the manifold. The following highlights some of the main causes and signs of oil leaks. Determined to be rear main seal, installed. 2002 2500 hd 6. Discussion Starter · #1 · Aug 17, 2019. Check injectors. This will cause your engine to overheat because of all the moving components that rub together and generate intense heat. Front and rear cover. EGR problems. PPE High Capacity Oil Pan (Cast Aluminum) Fits 2001-2016 Chevy/GMC Duramax 2500/3500HD. Fluid leaks occur when the seals around the transmission or driveshaft become defective, causing wear on the transmission. Unplug them and clean them with electrical cleaner and plug unplug them a couple times. I got a 92 Silverado 1500 ex cab 4X4 with older 350 and a automatic. I have no idea what part is leaking and cant see it because the front end and 4wd differential is in the way. Fuel injector pintle, ball or disc seat leaks as well as the bottom O-ring leak on a side feed injector will cause fuel to escape into the intake manifold. It really depends on what you are doing with the truck. Oil filter screws onto oil cooler and both oil and coolant goes through it. Why do I need low-ash oil for the LMM Duramax? GM says that most DPF's should run about 100,000 miles (160,000 kilometers) before they will require the ash loading to be cleaned. Now this isn't always the case, but after some trouble shooting we're. Duramax Diesel Engine Coolant Leak. I have 2014 Chevy Cruze 1. 2003 chevy 6. 0L V6 Engines. When a turbocharger is installed correctly, it should NOT leak oil, however, there. Buy Derringer L5P Tuner Here The Derringer tuner — When it comes down to it, you want a real L5P tuner. 6l Duramax LBZ. I was driving the truck yesterday and got a "check oil pressure" light on the dash and the guage was reading 0 oil. What a heartbreak, but I'm just glad it happened in my driveway and not on the road. For an in-depth look at the top four pattern problems for each engine, keep scrolling. The engine's CP3 high-pressure fuel pump is capable of drawing fuel from the tank without the aid of an external lift pump as long as the system remains primed. Joined Jun 14, 2007. 7 Powerstroke engines suffered from was turbo failure. The '01 Duramax has the fuel injectors located under the valve covers, so if one leaks, you can get diesel fuel mixed into the crankcase oil. Increases off the line torque and horse power. The turbo on these trucks is a fairly complicated unit. truck seems fine turbo power seems fine. “Evolution of the Duramax” As with most pickups in the industry, the Duramax line of diesel engines has come a long way from its inception to modern day. It’s off-putting and heavy, and could turn your stomach. It is not related to the 6. it is leaking a good amount of oil from the back of the engine down the bell housing on both sides. The most labor-intensive seal to replace on any engine is the rear main seal. The dealer first said it was the turbo return lines. My fight would be only 6000 miles or less then. 6L design, many major engine components were completely refreshed in order to create comparable power levels with its. Failure of this CP4 pump is usually catastrophic, causing instant contamination of the entire fuel system with metal particulates. com was founded in 2006 and created a site which houses some of. Anyway, the opinions on these things are often based on b. Without a doubt in my mind. In terms of LLY injector problems, GM had sorted out the internal failures with the 2004 ½ redesign, but the LLY Duramax would occasionally exhibit a trouble code for the injectors, but in most cases it turned out to be an issue with the injector harness rubbing through and causing a short or open in the wiring. Brought it in to get the intermediate steering shaft. 1 - 6 of 6 Posts. #10 · Jan 17, 2011. From the introduction of the LB7 almost 20 years ago, the engine output has nearly doubled its torque from approx. This will be obvious as an oil leak will be coming from somewhere other than the engine, most likely somewhere around the front bumper cover. view details; nov 01, 2011 - bremond, tx - diesel on 10/29/2011 the engine was blowing grayish white smoke. Determined to be rear main seal, installed. The water pump is a common place for a leak. I'd read that in forums, but could not find any informatio. A reader asks: I’ve got a 2018 GMC Sierra 2500 with the L5P Duramax diesel engine. Is there a common external leak problem. Woke up the other morning to find oil in my driveway from my 2002 Chevrolet duramax 2500. I have checked out this one before, and it earned second place on that article. Even if you've never dealt with a faulty Duramax fuel pressure regulator, you will get by just fine with this guide. As I was under the car, I noticed an oil leak on the underside of the plastic charge tube coming from the intercooler. Seems to be coming out by the pulpy belt area somewhere. My first thought was the vacuum pump, installed a new oem gasket and put lock tite on the bolts and torqued down to specs. Duramax Gauge Installation. Whether your gasket is malformed or your seal is worn, any gaps and spaces can be a source for leaks. If there is no fuel in the engine oil and the crankcase is not overfilled with oil, check for a sticking or inoperative PCV check valve. Fuel in Oil or Fuel leak out of breather. To prevent motor oil from leaking into the engine components, gather together the following items: a screwdriver (or ratchet), wrench, and newspaper or old rags. Dealership wont return his calls. When a turbocharger is installed correctly, it should NOT leak oil, however, there. “Evolution of the Duramax” As with most pickups in the industry, the Duramax line of diesel engines has come a long way from its inception to modern day. The hump adds volume, so you can have more oil in your engine, but because 2 cups of oil are trapped in the HUMP, the oil gets filthy really quickly. The leak appears on the ground at the front driver side under the left fron of motor (or so it appears) and leaks when running and for a while after being shut off. Oroville, CA. #10 · Jan 17, 2011. Completely replaces/removes the entire EGR system. Oil pan/windage tray mating the bedplate. I can't figure out where the leak is. I'm only gonna post this for only oily leaks on their 2015 chev. [Archive] Duramax egr problems LBZ GM Duramax Competition Diesel. It looks like an oil pressure sending unit and has a hose clamped on the bottom running straight down. 6 major fuel leak. Jump to Latest Follow 1 - 13 of 13 Posts. The dealer first said it was the turbo return lines. Other symptoms include slipping gears or slow shifting. It is pouring down from the back of motor appears to be under turbo. If they leak externally, they are also leaking at the injector connection. Today I came out to my 2003 duramax with 200k plus miles and found alarge oil leak. Woke up the other morning to find oil in my driveway from my 2002 Chevrolet duramax 2500. Important: If the SES light is illuminated, follow diagnostics for the DTC as indicated with the Tech 2®. It really depends on what you are doing with the truck. On most modern engines, the seal's failure is due to a condition inside the engine or a component connected to the back of the engine. Problems with 08 Duramax. No way they can tell me they are told by gm people that could that problem. Hi anybody have a clue on this, my 02 has an oil leak and its been at the dealer for 3 weeks. Safe bet to assume injectors?. 2016 White Colorado LT 2WD Ext. On fuel-injected vehicles, poor fuel atomization is a common cause of HC problems. As mentioned earlier, a typical cooling system operates at about 8-10 psi when the engine is at operating temperature. Part of your Duramax diesel engine's dirty secret is that it's got a HUMP. Oil leaks can cause catastrophic damage to the bearing systems and occur within seconds of the turbocharger commencing operation. all lines need replacing. The right fluid can lubricate the mechanism to retain functionality. Birmingham, AL. With various upgrades, this engine is easily capable of producing over 600whp and 1,000lb-ft. 0L V6 Mercedes Diesel engine has proven to be a strong and reliable motor. Fuel In Engine Oil in Engine Mechanical. Leaking oil is never a good sign. Common Misdiagnoses- Fuel injectors may be replaced when the problem is actually dirty fuel filter(s), low engine compression, worn out glow plugs, failed fuel supply pump, defective glow plug relay, improper injector pump timing, and/or. it is leaking a good amount of oil from the back of the engine down the bell housing on both sides. What kind of oil do I need for a Duramax Diesel? At < $10, this is cheap insurance against preventable oil leaks. Two of our common problems, bent rods and the FPRV, are really only common on tuned and modified LLY's running significantly above stock power. Arguably the most common issue on the 6. Between 350,000 and 500,000 miles is usually considered high mileage on a Cummins diesel. Loosing a 1 Qt of oil if 50-60 miles is excessive and doubt that all the oil is leaking past his seals in the turbo, turbo seal gap is. What a heartbreak, but I'm just glad it happened in my driveway and not on the road. Hopefully I can see whats wrong. See if you have a small drip near the left front, under the truck when parked. Unplug them and clean them with electrical cleaner and plug unplug them a couple times. Featured in the Silverado and Sierra HD work trucks (2500HD/3500HD), the L5P uses the same 6. No way they can tell me they are told by gm people that could that problem. 1,653 Posts. Duramax Engine LLY 2004. Two of our common problems, bent rods and the FPRV, are really only common on tuned and modified LLY's running significantly above stock power. Safe bet to assume injectors?. Our first pick of the best oil for duramax diesel engines is the Shell Rotella T6 5W-40 engine oil. It is not related to the 6. In terms of LLY injector problems, GM had sorted out the internal failures with the 2004 ½ redesign, but the LLY Duramax would occasionally exhibit a trouble code for the injectors, but in most cases it turned out to be an issue with the injector harness rubbing through and causing a short or open in the wiring. Duramax fuel system was engineered for this fuel and will live a long life under normal conditions. Other than that, could be any of the many hoses on the block. One of the worst problems is if the leak becomes very bad, the motor will consume mass-quantities of oil, which causes the motor to surge, regardless of your throttle position - and in some cases, will cause an "overrun" (where the motor goes faster and faster, and can exceed max revs, and may not even respond if you shut it off - it will just. Got home and it is full again. This supplement gives the test adapter set a larger variety of sizes to accommodate the newer style coolers that have multiple ports as shown below in Figure 1. If there’s just a small amount of oil dripping underneath your vehicle, it’s likely not a leak; it’s just residual oil that wasn’t fully cleaned off under the vehicle after the change. Front and rear cover. If you want one used already done up 4" lift a member has 1 with 6k miles for $67K I wish I could pull the trigger on it. If your truck is bone stock and you just use it for daily commuting and occasionally tow a small trailer, you will probably be safe with stock head bolts. The three engines you refer to are known as medium duty in the industry not actually HD as has been mentioned by others. Can a Caterpillar engine leak diesel into the oil? I have searched the Internet regarding the problem and it seems that this particular Caterpillar engine has an injector seal that can leak. The three engines you refer to are known as medium duty in the industry not actually HD as has been mentioned by others. On most modern engines, the seal's failure is due to a condition inside the engine or a component connected to the back of the engine. The Duramax has long been susceptible to fuel starvation failures because the engine doesn't use a lift pump to feed the primary pressure pump. 6L Duramax solves the issues with the factory supplied oil pan on your Duramax engine. They are formulated to promote clean engines with excellent control of sludge and other engine deposits that form due to high engine temperatures and. 6L Reliability. 910 ft lbs of torque is a good increase. Hey guys seems to be problem after problem with my truck but i guess thats how it is lol. Over the weekend, I was doing an oil change and replacing a blown fog light bulb on the driver side of the car. Woke up the other morning to find oil in my driveway from my 2002 Chevrolet duramax 2500. They still can't find were the leak is coming from. 1,653 Posts. An EGR Delete capable race tuner is required in conjunction with this kit. When the engine consumes a quart of oil every 1,000-2,000 miles, an overhaul is needed. Direct replacement for your 2001-2010 Duramax Oil Pan. It's still dripping/leaking. Is there a common external leak problem. Check injectors. I've been getting some grayish/blueish smoke on cold starts lately and decided to do some investigation to see if there was a problem or just the cold temps. The engine is a ground up design made to fit perfectly in those vehicles and produces 277 horsepower and 460 pound-feet of torque in the half-ton Silverado with a surprising peak torque at just 1,500 RPMs. The dealer first said it was the turbo return lines. 0 Dmax, in general), but combined with TPMS problems, I wonder if something is wrong with the BCM (body control module). Instructions for 2001 - 2002 6. The turbo on these trucks is a fairly complicated unit. Currently my truck is leaking quite a bit of oil, it's a 2011. Of course, it again depends on how well-maintained the engine is. (Page 1 of 2). 2016 White Colorado LT 2WD Ext. My truck is on 34000 and still leaks oil or trans. Duramax Problems Common Problems with the 6. GMC and Chevy Duramax LB7 6. Residual Oil Drips. The right fluid can lubricate the mechanism to retain functionality. Chrysler 3. Seems to be coming out by the pulpy belt area somewhere. customers would bring there trucks in complaining of low oil pressure. We highly recommend Amsoil Heavy Duty 15W-40 full synthetic engine oil for all Duramax diesel applications, or Amsoil Heavy Duty 5W-40 full synthetic engine oil for cold weather operation. As mentioned earlier, a typical cooling system operates at about 8-10 psi when the engine is at operating temperature. Avoid the cost and hassle by using Rislone Gasoline Fuel System Treatment or Diesel Fuel System Treatment every 3,000 to 5,000 miles, depending on the type of driving you do. 7 Powerstroke engines suffered from was turbo failure. A common problem with it, especially as your Powerstroke ages, is that it can blow the maxi fuse and/or fail or short itself out. Duramax Engine LLY 2004. Mercedes Oil Cooler Seal Leak on 3. The RPM Connection The most notable result from the 2001 SAE Study is the effect of RPM on oil temperatures. The leak is caused by minor imperfections in the engine block machine surfaces at the oil cooler interface that may allow engine oil seepage past the oil cooler O-rings. You’ll want to use it every 3,000 miles if. The Duramax has long been susceptible to fuel starvation failures because the engine doesn't use a lift pump to feed the primary pressure pump. 3L has a history of leaking manifold gaskets is there anything else back there that might be a possible cause? theres no. Injector Return Bolts 4. If an excessive oil leak from the PCV vent tube has been verified, check for diesel fuel in the oil. From the introduction of the LB7 almost 20 years ago, the engine output has nearly doubled its torque from approx. In terms of LLY injector problems, GM had sorted out the internal failures with the 2004 ½ redesign, but the LLY Duramax would occasionally exhibit a trouble code for the injectors, but in most cases it turned out to be an issue with the injector harness rubbing through and causing a short or open in the wiring. Even without blue smoke or a burning oil smell, you could have a car burning oil but not leaking. Duramax Oil Pressure The 2005 Duramax is notorious for bad wiring connection on the 2 large engine plugs on the driver side by the battery. Between 350,000 and 500,000 miles is usually considered high mileage on a Cummins diesel. A healthy Duramax injector will begin working at 1000 PSI. “Evolution of the Duramax” As with most pickups in the industry, the Duramax line of diesel engines has come a long way from its inception to modern day. One thing the '01-'04 LB7 Duramax is notorious for is injector failure. Posted on Jun 21, 2009. Oil cooler line it looks like, but that problem was most prevalent on 15-16 models. 0L EcoDiesel - Best Small Diesel Engine. 0L Power Stroke. Joined Jan 17, 2011. A common problem with it, especially as your Powerstroke ages, is that it can blow the maxi fuse and/or fail or short itself out. It has been g. In this cutaway shot of the Duramax engine, we see an oil squirter (A) and the oil heat exchanger (B) that transfers heat from the oil to the radiator fluid. I have 2014 Chevy Cruze 1. The Duramax has long been susceptible to fuel starvation failures because the engine doesn't use a lift pump to feed the primary pressure pump. I'd read that in forums, but could not find any informatio. Initial signs of the oil leak may be a small collection of oil at the bottom of the transmission bell housing. I have been debating on 1. Fluid leaks occur when the seals around the transmission or driveshaft become defective, causing wear on the transmission. This problem can show up at any time or mile range, but usually after the supply pump is replaced. Sinister Diesel is your number one source for high-performance parts and maintenance supplies for your Chevy or GMC Duramax diesel truck. 6L engines equipped with multiple cooler EGR system. Here is our guide to the 7 most common 6. The leak is caused by minor imperfections in the engine block machine surfaces at the oil cooler interface that may allow engine oil seepage past the oil cooler O-rings. A leaking water pump seal can be the result of a bad head gasket (or LB7 injector cup seal leak), should compression pressure find its way into the cooling system. I have 2014 Chevy Cruze 1. Discussion Starter · #1 · Feb 3 I had one oil leak when new, lost a center bearing, and a top rear lens was cracked, all covered by warrenty, I pull a dump trailer up mountains and it pulls great. Low Fluid or Leak. Enjoy quicker turbo spool and lower EGTs along with faster re-circulation of the coolant resulting in lower coolant temps. Duramax LLY 6. Interrnal engine malfuntion your piston rinns or seals or possibly your valve seals are damadged i would start with a compressing test of all the cylinders in the engine. Don't go there. Depending on how bad the leak is RTV should get you by for little while longer. For low fuel filter pressure, check the onboard computer or dashboard alert light. Duramax Diesel Engine Coolant Leak. (Service writer was confused) Well, at 30,000 I noticed more oil dripping down at the back of the block. However, one common failure point on tuned LBZ's is cracked pistons. 42 thoughts on " What Causes a Turbo To Blow, Leak, or Burn Oil? Find Out HERE! " Dr. I initially thought it was a head gasket, b. The engine’s CP3 high-pressure fuel pump is capable of drawing fuel from the tank without the aid of an external lift pump as long as the system remains primed. You’ll want to use it every 3,000 miles if. 0 Dmax, in general), but combined with TPMS problems, I wonder if something is wrong with the BCM (body control module). Front and rear cover. This is also the cure for low oil pressure problems. It has been my experience that the main problem is the aluminum clamp around the hose that crimps it tends to loosen, and the hose leak or blow off, however in some instances the aluminum lines can crack and leak too. While various versions of the engine have surfaced over the years, all generations of the Duramax are based on the same foundation. 6L Reliability. High Mileage. 02 duramax 6. Its codename was the "LB7", and the 2002 version of the engine is. Got home and it is full again. Duramax Oil Leak Problems If the Duramax's fuel system is like the Detroit Diesel's, it's often a jumper line under the valve cover. Why do I need low-ash oil for the LMM Duramax? GM says that most DPF's should run about 100,000 miles (160,000 kilometers) before they will require the ash loading to be cleaned. Block mating the bed plate. The Banana Pan Replacement Oil Pan for your 2001-2016 GM 6. Today I came out to my 2003 duramax with 200k plus miles and found alarge oil leak. The 2019 has the new L5P Duramax thst no longer uses the CP4. Duramax LMM DPF and. fluid on driveway every night. Hello, I have a 2020 GMC 3. Transmission had to be removed. When a turbocharger is installed correctly, it should NOT leak oil, however, there. No engine check lights came on. problems Duramax transfer case. 0L Power Stroke. Joined Jan 17, 2011. Your oil filter itself might be an issue. I mentioned it to the service writer. Whether your gasket is malformed or your seal is worn, any gaps and spaces can be a source for leaks. Common Issues and Problems We See In The Shop With The LB7 6. The engine's CP3 high-pressure fuel pump is capable of drawing fuel from the tank without the aid of an external lift pump as long as the system remains primed. Just replaced Water pump and know see that I am leaking near this oil cooler thing. Fullsize Truck & SUV - 2014-2019 K2XX Platform. 6L Duramax LP5 - Best Year Duramax Diesel Engine. Transmission had to be removed. Fuel injector pintle, ball or disc seat leaks as well as the bottom O-ring leak on a side feed injector will cause fuel to escape into the intake manifold. What a heartbreak, but I'm just glad it happened in my driveway and not on the road. 480-718-5511 :: www. Here is a short video of my 2015 3500 GMC with 15830 miles that has been in for oil leaking between motor and transmission for now a 5th time. There are no shortcuts or quick fixes if the seal has expired. 1 - 6 of 6 Posts. 6L engines equipped with multiple cooler EGR system. For low fuel filter pressure, check the onboard computer or dashboard alert light. 0 Dmax, in general), but combined with TPMS problems, I wonder if something is wrong with the BCM (body control module). Jump to Latest Follow 1 - 13 of 13 Posts. While I drove home, kept smelling oil burning. The combination of power, durability and fuel economy makes this engine a superior choice everywhere it is used. Injector Return Bolts 4. com Member Today! In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. Of course, it again depends on how well-maintained the engine is. WILLIAMS October 31, 2015 at 3:58 am. Whether your gasket is malformed or your seal is worn, any gaps and spaces can be a source for leaks. Duramax Gauge Installation. Since the car was going in for the update for the notchy steering. The problem is that a little too much oil can run over that ridge and down to the bottom of the filter and eventually seep through the filter and drip outside. 6 major fuel leak. One thing the '01-'04 LB7 Duramax is notorious for is injector failure. I have an 03 duramax LB7. This highlights a major service issue on the early Duramax engines - a no start condition brought on by an excessive high-pressure side fuel leak. While the engine uses the same 6. It has been g. That term usually refers to over the road tractors. It's common, particularly on 2001-to-2007 LB7 models, for the filter housing before the filter to develop cracks and leaks in the O-ring, allowing air to enter the system. Even without blue smoke or a burning oil smell, you could have a car burning oil but not leaking. 0L Power Stroke. 2002 2500 hd 6. The EGR problems only become an issue at high mileage. Here is a short video of my 2015 3500 GMC with 15830 miles that has been in for oil leaking between motor and transmission for now a 5th time. Duramax Leaks galore. the oil level was 6" higher on dipstick. Hey guys seems to be problem after problem with my truck but i guess thats how it is lol. The power steering pump is usually bolted to the motor below the valve cover and a valve cover leak and power steering pump leak could cause drips in the same place. If an excessive oil leak from the PCV vent tube has been verified, check for diesel fuel in the oil. Hi, I brought my '03 2500 in for an oil leak at about 25,000 miles and they fixed a leak on the back of either the block or the head. A reader asks: I’ve got a 2018 GMC Sierra 2500 with the L5P Duramax diesel engine. Leaking oil is never a good sign. 7L Power Stroke is associated with the vacuum pump. Hello all I'm a newbie to the forum so all help is appreciated. This leaves behind nearly a quart of the dirtiest oil, which immediately contaminates your fresh oil. One of the most common problems are fluid leaks. Duramax oil leak I have been wondering what has been causing my oil pressure toto show "damn near zero at idle" for awhile. Cummins is the brand of engine found in the Dodge diesel and Ram diesel truck lines. Oil consumption is a normal part of engine operation, with normal oil consumption averaging up to a quart per 2,000 miles. The Duramax L5P was introduced in 2017 as a replacement for the LML. About Duramax problems case transfer. Buy VP44 Overflow Valve; Miss. 3L has a history of leaking manifold gaskets is there anything else back there that might be a possible cause? theres no. I have no idea what part is leaking and cant see it because the front end and 4wd differential is in the way. If there is no fuel in the engine oil and the crankcase is not overfilled with oil, check for a sticking or inoperative PCV check valve. com was founded in 2006 and created a site which houses some of. Try cleaning up the motor and undercarriage with some degreaser to remove the current oil and grime, then run it for a few minutes to see if you can pinpoint the leak. Have an oil leak only when driving down the road. Another place to look is the oil cooler adapter, which connects oil lines and is itself sealed with a gasket. The leak appears on the ground at the front driver side under the left fron of motor (or so it appears) and leaks when running and for a while after being shut off. Average repair cost is $2,700 at 80,500 miles. The last question we get a lot about Duramax Diesel head gasket replacement is whether to use stock head bolts or ARP head studs. It also includes a variety of innovative engine technologies like ceramic glow plugs that heat up faster. Supposedly GM fixed the problem and started to produce good blocks in 1999 right before AMG took over the production of 6. 2003 chevy 6. 2002 Chevy Silverado 2500 HD. Answer (1 of 16): Cummins, hands down. No way they can tell me they are told by gm people that could that problem. I have read on forums that the leak can be from the gaskets in the oil cooler or from the turbo coolant hose. This is the most common cause of post-change drippage and is naught to worry about. the oil level was 6" higher on dipstick. Safe bet to assume injectors?. 480-718-5511 :: www. My first thought was the vacuum pump, installed a new oem gasket and put lock tite on the bolts and torqued down to specs. Dealership wont return his calls. After having some fun in the Duramax doing some "tire testing", she started losing some coolant on the ride home. A leaking water pump seal can be the result of a bad head gasket (or LB7 injector cup seal leak), should compression pressure find its way into the cooling system. On most modern engines, the seal's failure is due to a condition inside the engine or a component connected to the back of the engine. Duramax Oil Leak Problems If the Duramax's fuel system is like the Detroit Diesel's, it's often a jumper line under the valve cover. Hi, I brought my '03 2500 in for an oil leak at about 25,000 miles and they fixed a leak on the back of either the block or the head. 208 Answers. 8L has cylinder liners, a longer EPA rated service life than the C-7, and common rail injection instead of HEUI. These problems can be prevented by ensuring you are driving your Duramax on the highway enough and being cautious of not interrupting the regeneration process while its taking place. They still can't find were the leak is coming from. Leaking Injectors—LB7. 6 Diesel Common Issues and Problems.