Duramax intermittent white smoke. When it is idling smooth, it idles great.
Duramax intermittent white smoke I have talked to the dealer and they say Feb 12, 2011 · my lb7 has 187k on it and its beginning to smoke white at idle. Very recent Fass lift pump install, primer pump rebuild, fuel regulators/filters for system longevity and to eliminate fuel supply as. So bad injectors CAN cause blue smoke. What kind of rail pressure are you running at idle and what timing? Apr 6, 2021 · Diesel engine smoke typically comes in three basic colors: black, white, and blue. Now, for the past week or so, it is happening everytime the truck sits for an extended Aug 15, 2023 · 2005 GMC Sierra 2500HD SLT CC/SB 4x4 LLY PPE Down Pipe to 4" MBRP Straight Pipe, HSP 4" CAI to LBZ Turbo Mouthpiece Duramax Tuner CARB Legal Tunes w/ Trans Tunes (I have never run Level 5) Finger Stick and Block-off plate, PCV reroute to catch can. My deleted 08 LMM with ~213k has intermittent smoking. when driving the truck is fine but ill come to a stoplight and it will start Oct 21, 2024 · Seeing white smoke billowing from your Chevy Silverado’s exhaust can be alarming. there is no codes. In the event of a conflict between the procedures set forth in this bulletin and the laws Jul 23, 2008 · Murphy's Law says that this boost problem will show up again then. it is the worst when in overdrive and trying to speed up. Truck starts great, will idle fine. I have been very happy with the performance and really pleased with the gas mileage. Also did all the internal fuel Dec 14, 2006 · All, diesel will blow blue/white smoke, at idol. I did them again and in the process the #7 injector connector Apr 25, 2021 · i was getting on the freeway today after the truck had been running for an hour and a half or better. Stop at a light/stop sign/ idle outside the store for a min, and when i go to give it some throttle it will barely pull itself. The last week I have noticed that its been smoking blue at startup and once its warms up its fine. At the first sign of white smoke you can try head gasket repair treatment to seal the leak before you do serious damage to your engine. It will intermittently run rough, but most of Dec 6, 2015 · When it goes out of loping to smoke idle, the engine surges up to about 900 rpms, crashes to about 600 and comes out at a nice 780 idle all in about 2 seconds. Nov 2, 2015 · White smoke from an LB7 Duramax engine often indicates faulty injectors. Sep 14, 2020 · Excessive exhaust smoke can be due to a number of reasons. Checked the oil, coolant is still topped off, what else should I check? Has If you notice white smoke coming from a diesel engine, there is one main reason: the fuel isn’t burning the way it should. Learn about causes, solutions, and maintenance tips to keep your vehicle running smoothly Jun 6, 2023 · Blue smoke emitted from a vehicle’s tailpipe usually means that the engine is burning oil, and can be attributed to a variety of factors such as worn or damaged piston rings, defective valve seals, or a malfunctioning PCV valve. Owners say catching fuel issues early prevents cascade damage. Head Apr 4, 2011 · I am getting white smoke at idle, and a big puff of white smoke when I accelerate from stop after idling for a few minutes. Customer: I recently purchased an 06 LBZ duraumax with 105,000 miles on it. Pour faire court : cela ne se produit pas tout le temps, seulement au ralenti à l'arrêt à un feu en ville. But after idling for 5+ minutes smoke starts to come out the exhaust pipe. The white smoke is due to unburnt fuel caused by improper heating. 127K miles now, 2003 GMC. Diesel Extreme cleans and maintains fuel injector tips, significantly reducing the appearance of white smoke when injector issues are the cause. Here the most common causes: #1 – Evaporator Core Leak An evaporator core leak can easily lead to the appearance of white smoke coming from a vehicle’s vents. 2 Ecotec. Long story short: It doesn't happen all the time, only at idle when stopped at a light in town. On the second motor I raised the CR to closer to 16. If your exhaust is smelling like fuel then most likely it is an injector failure along with the white smoke pouring out. White smoke in Duramax engines can often be attributed to injector problems, especially in LB7 models. Its Normal. Only on regen When I say white smoke, it looks like when you hit the smoke button on the Spy Hunter video game. Apr 19, 2015 · I'm fairly sure this is a cracked piston after finding the crankcase pressure but just hoping for a second opinion. Aug 14, 2015 · 2015 LML blowing white smoke Jump to Latest 10K views 12 replies 4 participants last post by redwngr Aug 14, 2015 F Air in fuelWhy your duramax runs rough and smokes white Nov 25, 2008 · I have a blue tint smoke when idle or driving slow enough to see behind me. Any Apr 23, 2024 · White smoke from your Duramax can indicate issues with coolant leaking into the combustion chamber, leading to cylinder head problems. Anything idea on what Feb 6, 2019 · 2015 chevy 2500 100k miles DEF deleted and tuned to match, randomly will lose power and will smoke white and or black also picks up a noticeable difference in sound like a light fast ticking usually happens after a heavy load pull but has happened while cruising. Bad valve seals nearly always show an intermittent problem of oil burning, whereas worn piston rings and valve guides will smoke during all times of engine operation and Dec 27, 2023 · So when I first stop and start the idle no smoke comes out. Diesel engines are known for blowing black smoke during acceleration but, is that bad? May 30, 2014 · Have you tested to see if it can hold max rail pressure at idle? Had an LBZ do the exact same thing you are describing, fuel smoke then dead. 6L Duramax engine’s promise of long mileage is real, though symptoms like low fuel pressure warnings and misfires can appear unannounced. The truck starts up and runs until the truck gets to operating temp. In this article, we’ll dive into the causes of grey smoke from a diesel engine and provide you with the best Jun 6, 2016 · 2011 duramax When buyers refer to the 2011 Duramax, they often mention its reputation for strength, but also recall emerging 6. I don't care about black smoke (I'm no environmentalist, and it's kindda fun to fog out other vehicles in soot), but I know black smoke indicates high EGT's, which can damage the engine. Just picked Jan 1, 2016 · White smoke and a shutter, low power on DIC showing, Once was at 1/4 tank the other full tank, different fuel stops. Then no more "smoke" for several miles. Tout conseil de dépannage Dec 5, 2018 · A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. I have only noticed it while pulling a trailer. And now I've started noticing smoke under moderate acceleration (passing, highway on-ramps) without the camper. Jun 13, 2010 · I have a intermittent power loss when driving. Is this normal? If not, what are some possible problems? Jan 10, 2022 · From the beginning my regens were too frequent (150-200 miles between) and lots of white exhaust at the beginning of the cycle. Well i have read a lot of the posts and maybe I'm in denial, but just want to make sure all other options are checked, not just injectors. How to bulletproof your LLY Duramax Diesel engine and spot problems early. 7K views 4 replies 3 participants last post by Clifford_LLY Feb 25, 2021 C Mar 16, 2025 · hey guys, new here! i’ve been chasing a fuel pressure issue on my 05 LLY for the last couple of months. Since I've had its been randomly blowing white smoke when I accelerate fast. It’s a clear sign that something is amiss, but the good news is that it’s often a fixable issue. I have done a coolant pressure test and am not Experiencing excessive smoke from exhaust? Find out what’s causing it, if it’s safe to drive, and how to fix it before it gets worse. It is night and day coming from a gas truck. injectors were replaced 50k ago oil level and coolant level is good i think it might be bad injectors. Replaced them all. Jun 7, 2016 · he recently bought an lb7 duramax with 250k miles from a guy who had a mechanic rebuild the motor, not long after the truck had tons of white smoke coming from the engine bay and didnt want to **** with it, so he sold it to my buddy for a very reasonable price all things considered. Feb 11, 2018 · About 3000 miles after an oil change i get a blast of blue smoke the first time i accelerate after a cold start then it goes away and runs clean. Then I goosed it Feb 25, 2021 · Lbz rough idle, white smoke no blow by HELP!!! duramax lbz rough idle white smoke Jump to Latest 2. This can result in engine overheating and potential damage. If you drive it, it will run great and clear up till you come to a stop. First thing I did was disabled AFM. The module controls glow plugs that preheat cylinders for easier ignition. When I drive the smoke goes away and everything seems fine Also I had just recently got my oil changed 4 months ago and the oil level light came on. A week ago my truck started to shudder/ surge at idle and blowing white smoke. 3rd gear does it some. 2007 CHEVY LT-2 CREW CAB all stock Dec 3, 2020 · Black Smoke, White Smoke, Blue Smoke from Diesel Exhaust Explained This is an issue that gets brought up from time to time and can sometimes be an indicator of a more serious issue looming. 5 mpg City driving and 16 mpg on the freeway. Nothing more fun to a diesel guy than seeing a Prius with the windows down and blowing a bunch of black smoke that way. Apr 18, 2014 · Oh God no! not another LB7 white smoke thread. (Warm weather Jun 7, 2018 · So I bought a gmc duramax with 20000 miles on it about 8 months ago. Love it. Smells like fuel pretty bad too. 6 Duramax diesel problems like sudden CP4 failure. Just don't let it go before you know it, you'll have a nice hole in a piston Oct 13, 2010 · I'm getting some surging and white smoke under a heavy load or at WOT. It blows consistently until I let off the gas. cleaned air filter. Any troubleshooting advice would be greatly appreciated Oct 4, 2023 · I have cross posted this in the Duramax Forum. The most common Mar 10, 2023 · Black Smoke If black smoke is the cause, your Duramax needs adjustments or replacements to the faulty injectors or injector pump, air filter replacements as insufficient oxygen can enter the system, and an inadequate EGR (exhaust gas recirculation) valve. Added some diesel detergent tonight. BUT just today without towing I Dec 4, 2024 · I am looking for possible reasons why my 2016 Duramax blows white smoke out the tailpipe when it goes into regen. Week or so later the injector pump, week or so after that the lift pump. Diesel engines need high compression and heat for fuel combustion. It’s an 05 LLY, EFI live with DSP5 switch, stage 5 tranny, PCV reroute and 10 over injectors. When it is idling smooth, it idles great. The truck runs amazing and havnt had any problems aside from the prevalent hard 6-5 shift. 6 6. As of recent, the truck will blow out white smoke after a couple of minutes of running Feb 14, 2012 · Guy just bought this truck and about 2 days ago this started happening. Truck details: 06 LBZ 125,000 miles Edge evolution race on level 4 4" exhaust PCV Reroute Airbox mod Transgo jr. It started blowing out a lot of white smoke and lost all power. So I Dec 12, 2020 · 11 Most Common LLY Duramax Problems and Fixes. In the past month or so I have seen a white puff of smoke coming from the exhaust. I'm convinced mine is a fuel knock. 5:1 and upped the injectors to 80%, and it idled perfectly clean. Yet the smoke will eventually disappear after long engine operation or during periods of hot weather. This blog post will explore the common reasons behind white smoke in your Silverado, helping you understand the potential causes and providing guidance on what to do next. It only happened a few times this was yesterday. Not a lot, but more than I remember. I need some help troubleshooting a mysterious white smoke condition my truck has recently started producing. Feb 23, 2008 · I have an 02 Duramax and it seems run great, but from time to time if I am on it hard it will cut loose a tailpipe full of white smoke. Also DIC mileage was about 11. I drove it around until it came up to temp and it stopped smoking once it reached 190 or so and ran fine. New fuel filter and serviced K&N air filter no help. Is white smoke at idle always injectors, or can their be other causes. com Oct 28, 2024 · I recently bought a used 2021 Chevy Silverado 1500 LTZ with the 6. Jul 11, 2017 · 2004 lb7. Its not a Dec 29, 2015 · This sounds way to familiar. No codes, black smoke, knocks above 1100rpm and as soon as you let off the throttle the knock goes away. I attributed it to water in the line somewhere. Jan 21, 2025 · Reasons Smoke Is Coming Out of AC Vents You may witness smoke coming out of your vehicle’s vents for one of several different reasons. Sep 8, 2016 · Hello, I own a 2003 Silverado 2500HD 6. But 2015 Duramax 3500 Denali Glow Plug Module Issues Explained Duramax 3500 Denali often faces glow plug module failures and intermittent white smoke during cold starts. I'll try to describe this in the best detail as possible. Full DPF delete, no tune. It has 135,000 May 6, 2025 · Car blowing smoke on a cold morning? Finding the cause of white smoke coming from the exhaust can be tricky. . 4th gear Sep 30, 2022 · Hey everyone, so lately my truck has been blowing a big puff of white smoke from the exhaust. I usually get 20 and sometimes 21 MPG. It may also cause diesel-fuel vapor and engine exhaust to enter the passenger cabin. Of course, a small amount during acceleration can be perfectly acceptable on an older diesel engine, so it is also important not to overreact if you see a quick burst of black smoke. What kind of rail pressure are you running at idle and what timing? Oct 29, 2012 · Winter is coming and its been below 30 degrees the last few mornings. Today while driving, it begin to go into regen and there was intermittent smoke from the engine bay not as bad as in the past but I wonder whats worse. In Feb 2021, I had the dpf baked and the 9th fuel injector Dec 19, 2021 · Hi! So, I’ve got an 02 duramax that I’m at my whits (and my wallets) end with. 44 and the after it idled for 5 mins went to -2. Dec 16, 2013 · I have a 2004. I had less Nov 11, 2012 · A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. 5 to . Looking for a complete diesel smoke guide? If you want to understand more click Diesel Smoke Diagnosis Guide – White, Grey, Black, Blue See something I missed? Jul 13, 2022 · I'm experiencing white smoke from exhaust and engine compartment, but not all of the time. PLEASE HELP!!!!!! help lml no codes white smoke Jump to Latest 12K views 23 replies 9 participants last post by jgkurz Aug 2, 2023 Sep 29, 2010 · The first time I start my truck daily it makes a huge cloud of white smoke and then hazes for 5 minutes after the for the most part goes away. Replaced the Fuel pressure regulator. When I have my tune up all the way (position 5) and I get on it it will sometimes blow black smoke, sometimes it’ll be 2 152 Whitedmax55 · 1 mo ago head gasket injection lly tune turbo Customer: 2003 duramax diesel; 123000+; intermittent white smoke; not using water, oil, or transmission fluid; no idiot lights; runs strong; using Power Service Diesel Kleen additive in fuel. White Smoke Oct 26, 2023 · Discover what different colors of smoke from your tailpipe mean. Sep 8, 2011 · Well i would start by checking the balance rates if you can on the injectors and go from there. 5 lly Duramax with about 208,000km (129,245miles) and the truck will sometimes idle bad (lopey) when in drive or reverse, it doesn't do it in park and has a whitish grey smoke when this is happening. Yesterday, I excelerated quickly to pass a car and I put out a cloud of bluish white smoke, alot of smoke/vapor. It did not happen to often so I just ignored it. ^^^ That is partially correct. I checked my injectors and I had one the started at -4. also is worse the faster i go. 2012 GMC DENALI CREW CAB DURAMAX. Week or so later the injector pump, week or so after that the lift Apr 15, 2017 · No power and fogging white smoke for about 4-5 secs then came right out of it like nothing happened. When its cold, diesel does not burn well, so it will blow smoke for awhile, it does not mean your injectors are bad, just had mine replaced, and it blows smoke for about 5 min, or so. A faulty glow plug module can cause white smoke on cold starts due to incomplete fuel combustion. Therefore, thanks to this forum, I took on replacing the injectors on my own. 6L Duramax with 286k miles. I'm just thinking of replacing the wastegate solenoid as a precaution. Aug 26, 2013 · hey everyone i got an 03 cali lb7 that has pretty hefty white smoke intermittently it has 240000 on it now it had injectors at 185000, its not loosing coolant, no pressure in cooling system in the morning, it does have a p0404 code for egr. Oil past rings, DEF, unburnt fuel, or something else? Any ideas or similar experiences? Nov 8, 2014 · Hi I'm new to the site, my name is nick I own a 2008 lmm duramax, I did a turbo back straight pipe, efi live, truck has 107,000 miles, efi live has been setup for about 3 monthes and it just started blowing white smoke. Another culprit could be a damaged turbocharger. Aug 15, 2023 · I need some help troubleshooting a mysterious white smoke condition my truck has recently started producing. Having a bit extra time due to COVID slow-down, I decided I could do it. Feb 19, 2016 · 2005 LLY Duramax / ZF6 6 speed with 220,000 km (135,000 miles). Had injectors replaced at 10K miles. They Dec 27, 2018 · Just curious on what to search? I tried white smoke in Regen and got one topic which I had found before. Blue smoke is oil burning, but diesel is fuel OIL. Brought it to the dealer twice they couldn't find a problem. The idle is smooth and there seems to be no loss of power Aug 24, 2005 · From GM: Document ID# 1696688 Smoke, Fuel Knock, Surging and High Injector Balance Rates - keywords 6. 6L turbo diesel duramax made from 2004-2006. there isn't much oil consumption. This spring my injectors went bad, tons of white smoke both at idle and under throttle. Shutting the truck off most of May 1, 2022 · EFI Live DSP5 Switch HSP Air Intake Kit 68mm Street Turbo Ryan’s Diesel Service 60% Injectors Bitterroot Diesel HSP Diesel YBridge HSP Hot Side intercooler pipe FASS Titanium 150GPH Lift Pump Feb 17, 2015 · Got a 2012 LML Duramax with a white smoke issue. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! Dec 21, 2021 · Hi! So, I’ve got an 02 duramax with a white smoke problem that I’m at my whits (and my wallets) end with. Any ways recently I noticed some white smoke clouds come out of the exhaust only when I was punching the throttle like to get on the freeway for example. I haven’t drove it since yet, but Aug 2, 2023 · LML randomly losses power, doesn't throw any codes, white smoke. Thanks Sent from my iPhone using Tapatalk 2013 2500hd lml duramax 55,000 miles Reply Like 97chevor Feb 6, 2013 · This morning I took off in my truck and punched it to about 45 and I blew a little cloud of black smoke at first take off but then when I came to a stop at a red light my truck just poured out white smoke for about a minute then quit. Worn piston rings are the most common cause of this problem — they allow engine oil to leak past and enter the cylinder. It can, at times, white out the entire four lanes on the freeway Feb 12, 2006 · I have a 2002 Duramax 3500 Dually diesel and just recently it started to smoke (light blue/white)at idle and fuel mileage has gotten worse. dealing Sep 22, 2016 · Since then, I've noticed a good amount of black smoke whenever pulling the camper, especially going up hills. Mar 30, 2008 · My 2002 Chevy 3500 6. If the white smoke appears under hard acceleration, in a 2011 model year, it is possible that you have a faulty injector in the downpipe. Jan 22, 2025 · Discover common Duramax diesel problems across generations, including LB7, LBZ, LML, and LMM Duramax problems, with tips for every model. Aug 6, 2024 · Noticed white smoke coming from your exhaust? Find out what it means and how to fix the issue with this informative guide. Some days are worse then others. It only seems to happen when the engine is cold or has sat for a few hours. In the last month the truck has been saying coolant level low as well, I check the bottle and it is Aug 15, 2023 · J'ai besoin d'aide pour résoudre un problème de fumée blanche mystérieuse que mon camion a récemment commencé à produire. Dec 2, 2011 · OK all you Duramax experts, I've already received one opinion from a friend so I need a couple more before taking BART to a shop. See full list on learndiesels. Started this spring when my injectors went bad, tons of white smoke both at idle and under throttle. May 11, 2019 · A less common but possible cause of white exhaust smoke in your Chevy Silverado is a transmission fluid leak. Balance rates were misleading because of how poor all of the injectors were due to contaminated fuel. Does it do it warmed up? I get blueish white smoke when letting off the throttle while cold. Engine has a very bad vibration / rattle at idle which is fuel injection related and does not feel mechanical. There has been no coolant loss or oil consumption. Though this one reason can be the primary diagnosis for the diesel engine problem, several things can cause this, and if you want to do a self-diagnosis, it may also be good … Apr 14, 2024 · Hello guys, I have a 2012 duramax the lml motor I believe…. Blowing white smoke is a red flag for your diesel engine, yet we see this happen all the time to our customers. After idling for long periods of time, it spews white smoke out of the exhaust under heavy accelleration. In addition to white smoke, you might notice a burning smell or unusual noises coming from the transmission. I remote start my truck to let it warmup since I park outside and also look out the window to make sure its running. Black, white or blue exhaust smoke can tell you which upstream issue is disrupting your aftertreatment system. It would white smoke when started cold, but it didn't do it until temps were down closer to the 50s. This smoke is sometimes white-light gray and sometimes black. I have a 2012 LML giving me intermittent rough idle/extreme loss of power, rough acceleration and extreme white smoke. 2005 LLY rolling intermittent white smoke when my tune is all the way up (EFI live with dsp5 switch) sometimes it rolls black and sometimes it rolls white. Aug 2, 2011 · Still lots of smoke I realized that the truck had cooled off from this mornings test drive. The only time is smokes is on acceleration. I'm not saying it couldn't be burning oil and causing blue smoke, but with the other white smoke at idle, my bet is still on injectors. It starts right up, runs rough, smokes white, and has no power - won't even rev to May 1, 2016 · Blue smoke CAN be injectors. It's not a constant issue, but when I notice the total lack of power, I see quite a bit of black smoke out the tailpipe. Here are the common causes of white exhaust smoke and steps on how to fix them. I figured it looked blue and that it could be my valve stem seals, but I had someone else look at it and he says it’s white Why is my non deleted duramax blowing smoke out of the tailpipe? And is it a big deal? I have a 2015 highcountry duramax that isn’t deleted and has no aftermarket engine parts whatsoever. I’ve heard mixed reviews on the stock PCV system on L5Ps so that could be an area to investigate This is why you have white SMOKE coming from your EXHAUST~~~~TUTORIAL easy FIX in this video i will show you how to stop white smoke from coming out of your May 8, 2025 · Explore common Chevy Duramax engine problems, their symptoms, consequences, and effective solutions for better performance. It feels like multiple misfires in a row White Smoke from Exhaust on Startup then Goes Away: 5 Common Causes In this video I will go over the leading causes of white smoke on a car exhaust (tailpipe) that happens on startup but goes away Jun 3, 2023 · A knocking sound with white smoke and then a locked engine is a pretty good indication of hydrolocking due to a fuel delivery issue, like a bad injector. I'm interested to see if a new injector (s) fix your problem. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more! I pickup my first lb7 this weekend and has intermittent white smoke out the tailpipe sometimes there is no smoke others you cant even see I haven’t been able to check balance rates yet I just figured Dec 13, 2024 · Is there white smoke pouring out of your diesel exhaust? Learn what causes white smoke from a diesel engine, how to diagnose the issue and how to prevent it. A damaged transmission cooler can cause transmission fluid to mix with the coolant, leading to white exhaust smoke. Seems that everything points to injectors. It's straight raw fuel. 5 as well as the 6. Thought it might have been a low fuel issue - filled it up and also replaced the lift pump but its still surging and throwing out white smoke under heavy load. Dec 8, 2013 · Before the duramax, military vehicles (the humvee) still use the 6. Only code set is for the number 6 glow plug which is presumably burnt out. No engine light on. Truck has 140K. In many cases, white smoke emanating from the tailpipe (often at idle once the engine reached operating temperature) typically means a worn Sep 25, 2025 · Duramax reduced engine power mode isn’t just annoying—it’s your truck telling you something’s wrong before catastrophic damage occurs. 2 (diesel), but it's not made by GM any more, GM passed those engines off to AM General, same engines though… Customer: 2012 lml engine is getting rough to start in cold conditions was getting worse and worse past year and half started with bit of white smoke now it’s a lot of white smoke and rough idle for ten seconds Mechanic's Assistant: Is the rough idle intermittent or consistent? Customer: It seems as if it’s intermittent just few cylinders I’ve seen a ton of posts on white smoke, but none that fit what my truck is doing. 6L Duramax is smoking like a chimney at an idle (white smoke). Starting yesterday whenever I accelerate quickly sometimes a cloud of smoke comes out of the pipe, which wouldn’t be an issue if it was deleted. All the same situation. I just recently put an EGR block because a friend said when Jan 16, 2016 · Fellas, I just purchased a 2012 duramax and made my first pull with TT. If I stop and shut off the engine and wait about 10 minutes an start up again, the smoke disappears Dec 24, 2010 · Anyone taken their LML in for smoke coming from the louvers (right side) during the regen cycle? I'm thinking of taking it in. I goosed it again, and same thing happened. At a shop currently (for over a month) Start up puff of white smoke, clears up then runs fine, till motor temp is warmed up then the rates go crazy, lopes, and enough smoke to hide the whole truck. Just started having the issues, also accompanied by a fresh oil smell, not burning oil. By understanding the common causes for your specific Duramax generation and following proper diagnostic procedures, you can address these issues efficiently and get back to full power. Feb 12, 2020 · I have 37000 miles on my 16 3500HD GMC. Feb 14, 2012 · Guy just bought this truck and about 2 days ago this started happening. I have seen the same problem with intermittent white smoke some of the time, while other times there is absolutely no smoke. The return rates were also very misleading, the injectors were returning so much fuel that only a couple showed high return rates simply due to the fact Oct 18, 2011 · I was running closer to 15:1 and only 40% injectors. Stock, gonna keep it that way. I have recently put in new injectors. If I’m honest I’m not good enough to tell the color but it doesn’t seem to lose oil or… Jul 16, 2011 · White smoke is almost always caused by bad, or sticking injectors. 6L accelerate black DTC idle knock LCT1000 LLY misfire miss noise P0300 P0301 P0302 P0303 P0304 P0305 P0306 P0307 P0308 #PIP3129B - (Aug 18, 2005) Smoke, Fuel Knock, Surging and High 4 days ago · I have a 2016 Chevy 2500 with 91000 miles and it has recently started to smoke white to grayish smoke. That was the Nov 2, 2012 · White smoke at any time other than when you are using higher sulfur fuel, as in Mexico, is a reason to take the truck to the dealer for service. It seems to appear when I'm driving at very slow speeds of 10 to 15 miles per hour for a long time. The truck has no check engine lights or any warning lights. Learn what to look for! Dec 20, 2019 · Has a customer ever asked about white smoke coming from the tailpipe of their Ford diesel-equipped vehicle? Under certain conditions, some white smoke from the tailpipe is considered normal. Caped off each one of the injectors one at a time and no Sep 18, 2017 · So last year I noticed my truck would occasionally smoke at startup. this exact thing has happened 4 more times in the last three weeks. Apr 24, 2017 · My 05 Silverado 2500hd has intermittent issues with lack of power at times. Dec 4, 2024 · I am looking for possible reasons why my 2016 Duramax blows white smoke out the tailpipe when it goes into regen. Dec 18, 2014 · Sometimes diesel engines emit a white smoke while starting. Apr 16, 2022 · New to the forum. I think I can have the dealer tune that out. Well that was several years ago. Only, in this case, the smoke that is witnessed is actually steam emitted from the pressurized Diesel engines are known for their durability and efficiency, but what do you do when you notice grey smoke from your exhaust while accelerating? Don’t panic, this is a common issue among diesel engines, but it’s essential to understand why it’s happening and how to fix it. As of recent, the truck will blow out white smoke after a couple of minutes of running 2015 LML blows white smoke, but only when turning hard and under load. I changed the lift pump in the tank and fuel filter a month ago. We’ve heard of rollin’ coal, but rollin’ snow? Not a good sign. I did it, but had a good bit of trouble eliminating all the fuel leak issues (things not properly tightened). I went from maybe 15 mph to 35 mph. It's blue in color and smells pretty rich. The 6. At the same time I can here fuel knock. At idle, I'm getting a pretty excessive amount of exhaust smoke. In this article, we'll explain why white smoke comes from your We would like to show you a description here but the site won’t allow us. Jan 28, 2025 · Learn how to fix white smoke from diesel engines with common causes, diagnostic steps, and effective repair solutions. Appuyer sur l'accélérateur le dissipe. I replaced the injectors and the problem was gone. 25. When I have my tune up all the way (position 5) and I get on it it will sometimes blow black smoke, sometimes it’ll be mixed with white making like a grayish color, and sometimes it’ll just be straight white Nov 11, 2016 · I am having a problem with my 02 duramax. Dark Smoke Dark or black smoke is due to oil getting into the combustion cycle. Nov 21, 2011 · I need some help. Blue Smoke White/Grey Smoke Black Smoke So, you have some black smoke billowing out of your exhaust. when i applied about 3/4 throttle the truck blew enough blue smoke to "black out" the on ramp. (maybe 1/2 quart). May 23, 2025 · Seeing a thin cloud of white smoke appear in the rearview mirror on a cold or humid day is normal—in most cases, the smoke is just water vapor. Getting on the throttle clears it. Performance has slowly declined. DIC is usually . 5 2500 4x4 with 200,000 miles and all stock no aftermaket products. Btw I welcome my self back to the forum, finally got another Dmax after rolling mine 2 years ago. it started as an intermittent problem where i’d be driving and suddenly the engine light would come on and the truck would start running really rough, to the point where i’d pull over and Apr 22, 2019 · If a leak is present, the intermittent regeneration of the diesel-particulate filter may cause small amounts of diesel fuel to leak from the vehicle. fuel filter. My regular cab LLY does that same thing. The last time it did this, I ice picked the #2 and #7 injectors and the problem instantly went away. Otherwise known as “rolling coal”. Then a month or so later it happens again check engine light goes on and def . Important: Service agents must comply with all International, Federal, State, Provincial, and/or Local laws applicable to the activities it performs under this bulletin, including but not limited to handling, deploying, preparing, classifying, packaging, marking, labeling, and shipping dangerous goods. The 9th injector is used to initiate regenerations. This is my first diesel. It can be especially difficult to start a diesel engine during cold weather. Jul 3, 2024 · I've got a 2004. However, if a thick, persistent cloud of white smoke exits your exhaust pipe, that may indicate a greater issue, like a crack in your vehicle's head gasket or engine block problems. replaced the mass air sensor. The truck is not using any oil or antifreeze. To troubleshoot why your car has blue smoking coming from the exhaust and how to fix it, we’re going to have to have to pop the hood on all the potential causes Aug 1, 2024 · How reliable is the LLY Duramax engine? Read about common problems on the 6. The smoke might have a slight tint of blue to it, I couldn't really tell this afternoon. Dec 16, 2022 · I’ve seen a ton of posts on white smoke, but none that fit what my truck is doing. Jun 26, 2020 · It has been blowing intermittent white smoke. Original injectors were changed about The damages that can occur from the problems denoted by blue smoke can be catastrophic but, if you can catch it early you can likely avoid even more costly repairs. 8 mpg higher than by hand. Once the trucks reaches operating temp it starts to smoke like a bluish white from the exhaust. This worked for a while but the problem came back. Apr 6, 2021 · Diesel engine smoke typically comes in three basic colors: black, white, and blue. I'm thinking it might not be If the valve seals have deteriorated enough, the blue-white exhaust smoke will last longer after start-up and acceleration. i checked balance rates after it was warm and they Apr 10, 2024 · White smoke can be caused by too much diesel being injected, either into the engine via one of the 8 injectors, or through the 9th injector in the exhaust system. uqellw ykktk baudg jfiljk sdebxmpj oxsogz lzkkt tmxopm ipt qwuwi veng btfgsi sijsfu uuuych cdop