Lb7 smoke from oil fill. there is also oil pouring.

Lb7 smoke from oil fill There is some oil that comes out of the breather tube by the oil Oct 31, 2014 · Smokes more when loaded, not much at idle. I was driving down the road at freeway speed and motor started knocking. Dec 13, 2006 · ISSPRO Gauges: Boost, EGT, Oil Temp, aFe Stage II ProGuard7, TransferFlow Filler, Power Slot Rotors, EBC Pads yellow / green stuff, Russell Stainless Brake Lines, Cooper Discoverer S/T, Roadmaster Active Suspension, Bilsteins, 2" Level, Westin Oval Steps, Line-X, WeatherGuard Tool Box(Black), White BugflectorII, Sylvania SilverStar Head Lights. Fathers truck is a 01 LB7. Engine at operating temperature, shut down and wait 5-10 minutes. Tech 2 showed injector 3 failed -15. I’ve spent the last week scouring the internet on this topic. I now have no smoke/blow by out of the oil fill or vent tube. No smoke is coming out of tailpipe 9. The is still motor knocking and white smoke. If you open the oil fill cap does it pass a significant amount of air or smoke? You may want to think about a compression test if the blow by is significant. Still do the easy check for blow-by (cap upside down on the fill tube to see if it stays put). I know my LLY had wear and play in the exhaust valve guides at 160k (ish) when I had them checked. Start the truck and if it gets blown off that means you have excessive blowby or a cracked piston. Mar 10, 2012 · Ok im getting excessive blowby out of my vent ,no fuel in my oil,my upper coolant hose isnt rock hard,But my #6 injector balance is reading 8. Nov 15, 2011 · Fill intake with oil, Fill bed with tires and set on fire, drain engine oil and replace with gas, bag over airfilter, remove turbo, sell truck and get Cummins, etc. I've seen blue smoke at idle 3 times; heavy blue smoke when I accellerated from idle those 3 times. A couple of months later i was hit with mystery limp had a new pump May 1, 2016 · 02 LB7 with 230+ miles started to blow (kinda white) smoke at idle then when gassed bunch of blue (oil) smoke until at speed then clear and is still running great but the mileage is down about 1 mpg. It is so easy to check that's where I would start abought 20 bucks should stop the oil leak. My only other indicator is when I put a little oil from the dipstick on a paper towel there is a different color ring around it . 04 lb7 work truck/sled puller- 561 rwhp, 240k+:thumb 03 lb7 ZF6 single cab long box 4wd "Stang Killer" Jan 9, 2016 · 03 lb7 232k 4x4 2500hd Cali Emiss Pulling a trailer blowing dark white smoke, hit a stoplight to have low oil pressure and bad smoking/ knocking. I will have the truck up to temp 190 ish degrees according to cluster. Drained all fluids and pressure tested coolant system, water drained out the oil pan with oil filter off. I just got done replacing all 8 injectors (LDS) and oil change. A while later I had a injector fail due to a a tank of bad fuel. Shortly afterwards, i changed the oil and used 5-40 synthetic and started getting blow by smoke from the blow by tube and it also comes from the oil filler cap hole. Once cool bad fuel knocking from what it sounded like. Dec 5, 2018 · Have an lb7 with 208k miles. A have noticed some blow by out the oil filler, but not a lot. You might need a mirror. No more pressure, no more fuel in the oil fill either. this is when the say they found metal in the oil. He installed them in my truck last week and the next day I noticed smoke coming from under the hood. After looking for a good while I narrowed it down to the case breather and when I opened the oil fill some smoke was puffing out of there as well. I'm at 90,000 miles on my '03 LB7 (CA) and haven't used oil before. Feb 6, 2013 · Took a light and looked down in there and could see diesel fuel running into the oil fill. It doesn't have a hard start at any temperature, and it doesn't smoke until the engine reaches ~125F. 04. It’s now more than 3 quarts low. My oil pressure is good, fuel mileage sucks a White smoke from the valve cover opening or the oil-fill tube is one of the most common signs of too much blow-by. Sep 8, 2021 · I have an 04 silverado 2500 with the lb7. For those interested, here is the oil analyst showing I have antifreeze in my oil. Only symptoms are usually haze at idle or oil over flowing from diesel being dumped into the oil from the injectors or return lines. Jul 24, 2014 · My 04 lb7 was doing that. Few weeks after buying it started blowing heavy white smoke from the pcv vent. Jul 20, 2011 · 01 Chevy 2500 CCSB 4x4 LB7 Cheetah lb763, Dipper trans ML converter, EFI Live, DT dsp5, ADII 165, AEM intake, Banks boost tubes, Profab turbo horn and downpipe, Corsa exhaust, MA trans brace, Krytonite UCAs, Ultimate idler on SS pivot, Rare Parts extreme tie rods and pitman, Isspro boost/pyro in Trippin mount, 285/70/17 Terra Grapplers on H2's Jan 18, 2014 · My truck (2004 gmc sierra 2500hd dmax) started blowing white smoke a while ago, at first not much, but now it is really putting it out there. It always starts in hot or cold starting. I put a ton of miles on an LB7 and never had a diesel smell from the vent tube. After having the truck trailered home and only running it long enough to get it on and off trailer and into the garage (total run at idle about 30 minutes) decided to Nov 5, 2020 · Both of these issues result in fuel leaking from the injector which can then enter the crankcase. However, where the down pipe meets the exhaust at the v-band clamp, its leaking oil pretty bad on to the ground. To test, put the lid upside down over the tube or valve opening. Have you done a compression test or anything. losing about a cup of coolant every week 7. But Dec 11, 2010 · try taking the dipstick and dabbing the end on a white papertowel. are you losing any coolant? two ways to check are; one: by just doin a compression test to check for a possible bad headgasket, two: i Apr 25, 2012 · Heres the deal. edistojon1 New member. New injection pump stock. 5,QCSB, Goerend full Nov 25, 2011 · ok so the front seal went out on the stock turbo,(blowing oil in intake and smoking like a freight train constantly):mad:, so i ordered a htt s366 and got it installed at a shop that turned out to be a joke(not gonna name bash) but anyway, its still blowing oil in the intake and smoking Sep 22, 2016 · I would be a little concerned with the blow by if the odor is that noticeable. 6L LB7 Duramax Diesel Oil Leak from PCV Vent Tube - keywords contamination crankcase fuel - (Mar 31, 2005) View Full Image Subject: 6. The insane compression ratio is what causes the blow by. gif[/img] Feb 28, 2014 · Check all hoses to the turbo. Aug 20, 2017 11 0 0. Sep 19, 2012 · DD: 2002 gmc lb7 ccsb, 6" rcd lift, rolling dunlop mts, 5" mbrp turbo back, efi live by idaho rob, banks cold air, Airdog 150, Ppe oil centrifuge, Udp fuel filter adapter with 1 micron filter, Ppe boost valve, Profab dp, manifolds/up pipes, and intake horn, Custom trac bars, bt diesel works tapshift, batmowheel. At Idle it will smoke just enough to piss off the guy behind me, and accelerating from 0 it will smoke enough to leave a haze at the stop sign. Yes high oil levels. However the ticking is the thing that triggers me to think you may have a valve guide / seal issue. Nov 16, 2020 · @long-time-dmax Your federal emission LB7 does have a pcv system- the top of the valve covers have a pcv 'valve' in them, the hoses that come off the valve covers are the pcv hoses that join together and go to the tube on the alternator bracket, then the tube goes down into a little separator in the bracket that then separates the liquid oil Nov 20, 2009 · well i have a truck exxon would love to have. Hand full of bolt ons. the guy i bought it from said he had the injectors replaced at the dealer 10k ago. Truck idles rough and has white smoke at idle. Sep 16, 2011 · Owner had good records of Fuel filter changes. Using a thin, white paper towel or coffee filter, pull the dipstick and allow the oil to puddle on the paper (don't wipe it). We ended up cleaning the injectors and replacing fpr which seemed to solve the problems. New injectors stock reman. Posted by u/freeloaderFPV - 4 votes and 7 comments Sep 18, 2013 · Bone stock 2002 LB7, just bought this thing, it runs, but runs rough. It is straight piped with intake and edge juice with attitude. Small puffs of smoke at idle out of the breather tube and from the oil fill when I removed the oil cap. Jun 27, 2018 · Yeah he probably had fuel in the oil, typical. Apr 14, 2011 · The LB7's have a hose from the tee between the valve covers to the alternator bracket, which has a cavity in it, the drain to the oil pan has a PCV screwed into it and a hose going to the block. some days its pretty bad (at traffic lights and such) and other days not so bad. 5 to 31. Noticed oil blew out of the filler tube, when engine is running, strong puffs of air coming out of the oil fill tube, seems to be from one cylinder, I can seal the tube with my hand (not very strong pressure). I look like such a planet killer when I Nov 14, 2010 · My lb7 with 113,000 miles has white smoke/steam that comes out of the crankcase breather tube by the oil pan. Dealer says injectors and compression are good. Apr 12, 2011 · :help Excessive pressure from the oil filler cap and pcv tube, enough to blow the cap off if I loosen it, and purplish/grey smoke, the kind that makes me want to fill the side of the truck full of chevron stickers and the box full of dead fish and birds. Will update then. Injectors were replaced at 130k. At almost 190,000 something has to start wearing out. Drive is hit or miss. there is also oil pouring Jul 9, 2017 · 02 lb7 180k miles. So the guy said he was driving and all of a sudden he heard a "bang" and Mar 19, 2023 · My ‘18 canyon with 85k mi recently gave me a “low oil warning” after I changed the oil only 1000 miles ago. 2002 Duromax LB7, MPG dropped from 18 to 10, Oil pressure dropped = major fuel in crankcase. No hop scotching or anything crazy no white smoke either out of fill tube. The piston rings are just awful along with the oil control ring which allows too much oil to burn. I have recently put in new injectors. Ive had indications of injectors going bad. In neutral/park its hit or miss. The truck isn’t leaking oil on the ground anywhere and isn’t bellowing blue smoke like I’d expect for this much loss. Jan 31, 2014 · Starting to blow quit a bit of blue smoke from the exhaust so I was messing around with it and took the oil fill cap off and it started puffing out smoke there to or "steam" can't really tell. 00 a quart. Truck runs fine otherwise except for bad black smoke under acceleration (needs injectors, I assume). Aug 2, 2011 · You can check the oil for fuel contamination easily. Jun 9, 2014 · (unless rev'ed especially if left to run for 20-30 minutes then rev'ed, the blue smoke swallows the truck, garden and house in one huge thick lingering cloud) Always only blue smoke, never white or black, smells kind of like like burning oil but also a sulper type smell too I appreciate diesel is a form of oil but not to the point of burning blue. Aug 23, 2010 · 2006 Silverado 2500HD ec/sb, 6. Once the trucks reaches operating temp it starts to smoke like a bluish white from the exhaust. 5 LB7 Duramax Powertrain LB7 Intermittent Smoke. Oil everywhere seemed to blow out of oil fill cap. Jun 17, 2018 · Do the paper towel test-- drop some warm engine oil on a paper towel- the oil will make a spot-- the diesel in the oil will make a halo around the spot. The smoke is a bluish/grey/purple from the exhaust, and the oil in the motor has been changed several times and is very clean. The truck starts up and runs until the truck gets to operating temp. If all you have is oil, thats a good sign. A lot of trucks will run 100% fine with injectors leaking or at least it seems that way but I wouldn’t keep driving it if that’s the case until it’s fixed. 35 this basically happened over night truck was running fine yester until i started it this morning and heard my injector knocking what im Nov 6, 2013 · Justin 2001 LB7 Silverado 2500HD LT CCSB 4x4. they can crack sometimes and leak into the crankcase. Under a load it is the normal black smoke. As I am sitting there I notice a little bit of smoke. Apr 6, 2010 · Yep. . Has 135000 on it . Dec 23, 2016 · I knew when I bought the truck that it needed injectors. Injectors fixed all of my issues. If I take the fill cap off when it is warm it will do the same thing. However, a bad injector or leaking return line an cause the crankcase to fill with fuel. Oct 19, 2015 · I'm sure this topic has been seen before, but most I have read have had fuel in the oil or no oil loss. This can lead to more serious problems, as diesel fuel doesn’t offer the same lubrication properties as oil. I know my lb7, when hot, would smoke a little out of the breather, but I had to be beating on it pretty hard to get that. So I bought the truck drove 450 miles home got about 20 mpg oh yeah also good oil pressure on the way home over 60 psi at cruising speed. Efi live tuned by Rob at ATP, Built trans by Brad at Calvins Auto, Wehrli custom fab s475/stock twin turbo kit, ARP head studs, tie rod sleeves, cognito idler/pitman arm braces, cognito traction bars, airdog 165, turbo horn, LML driver side manifold, cat fuel filter adapter 1r-0749, installed cab lights and tow mirrors. I pull the oil fill cap and it is blowing out of there and when you pull the dip stick same thing. I use 1qt per fill up. OK You can talk to a tuner about making a tune less clean, but smoke DOES make diesels look bad in the eyes of EPA fucktards and Enviro-Nazis Apr 21, 2013 · 5. Signs of Bad LB7 Duramax Injectors Sep 1, 2010 · I just hit 132000 with my truck and latly i been getting weird smoke it keeps comming and going like it will show up then it wont for a few days idk its really weird. Smoke puffing out of oil fill when cap is removed 6. white smoke out of PVC, oil dip stick, oil fill tube are most likely the same. E. Pulled oil fill and no leak out of the CP3 so I have to assume injector problem. Slight knocking (ticking) coming from the driver's bank (not a fuel knock) 10. Place it back upside down on the fill neck. It’s been burning about a quart or two every 8,000mi up till now. May 9, 2010 · another lb7 with coolant loss and no indication of leaks, oil analysis comes back good to go. My thoughts were CP3. Checked the balance rates, there +/-2. May 2, 2016 · A little blowby out the oil fill cap is OK. So I've got blow-by in the slightest. This can result in oil-fuel blowing out the vent tube and coating the underside of the truck. Started with light smoke out the tail pipe. Listen for rough start and watch tail pipe for smoke Watch mirrors on acceleration (or have buddy) for smoke Fuel injectors - Balance rates if possible - by a tech???? Sep 1, 2016 · Is your truck fed or cali 2004 Silverado LT LB7 Moded air box with custom 5 inch Steel tubing, Full EGR delete with fed up pipes, IAH Delete, fed y bridge, PPE Turbo Horn, shortened drive belt, LBZ CP3 running LB7 FPR, port/polish on IHI with rebuild, Batmo Wheel, PPE boost valve, 3. Could the bad injectors be the cause of this? Dec 28, 2013 · First time diesel owner. At idle after the new turbo when in the truck was running a little ruff like a mild cam and a little haze, but after reeving it up then the white smoke and oil came again. i have noticed some smoke in my headlights at night also, so i decided to take a look and my vent tube is blowing smoke plus dripping oil on my driveway, so when i remove my oil fill cap i get Mar 1, 2013 · I was running it with LBF at 2 and power level at 0. 01-04. Mar 18, 2007 · My truck is pouring white smoke from the crank case vent. Jan 22, 2011 · i just bought a 02 yesterday with issues. Mar 28, 2014 · You can remove the oil fill neck tube and you should be able to see if the CP3 seal is leaking especially with the dye and a blacklight. And take off your oil fill cap. Check blowby by removing the oil fill cap and set it upside down. May 2, 2012 · I believe the CDR is supposed to be replaced every 30-50k and its not too pricy. There was no oil in the coolent, or coolent in the oil. It should not be lifted off by the blowby (it should just sit there and not move). EFI Live by Idaho Rob, 695K+ and rolling, Undercover Bed Cover, Vortex spray in bed liner, Odyssey Extreme Batteries, Westin steps, Bilstein Shocks, Road Master Active Suspension, M/A Pump Rub Kit, PPE Trans Cooler, PPE 3" downpipe, MBRP 5" Exhaust, Edge Insight CTS, K&N drop in filter, AirDog II 100 w/ CAT 751, LLY FF Housing, Running on LMM Nov 14, 2010 · My lb7 with 113,000 miles has white smoke/steam that comes out of the crankcase breather tube by the oil pan. I'm the second owner and the first one may have done some towing with it. May 13, 2021 · Since the LB7 injectors are inside the cup, and both are inside the valve covers, the fuel leaking through the cracked cup flows to the crankcase. Cold or hot it idles perfectly. Apr 18, 2014 · LB7 white smoke One of the best ways to check if injectors are bad is to test the oil for fuel contamination. When the truck is running I can smell oil fumes. The most common cause for injectors go bad is because the high-pressure seat no longer seals all of the spray holes in the injector (ball seat erosion). Jul 26, 2007 · First and for most check the PCV valve that is where the oil gets seporated from the blow buy the oil should drain back into the crank case through the PCV. 07 Chevy Classic 2500HD 4x4 2LT LBZ CC/SB White Nov 14, 2010 · My lb7 with 113,000 miles has white smoke/steam that comes out of the crankcase breather tube by the oil pan. I normally don't take it completely dry, but usually put in 30. 03 and #7 -2. Apr 3, 2018 · Any white smoke coming out of oil fill/dip stick? White smoke often occurs when there is either too much fuel being injected into the combustion chamber, or not enough heat to burn the fuel. Great, problem solved. Oil feed and return lines are under the turbo and behind it. Engine is not running really rough, but has slight vibration not Jul 9, 2016 · Blow by tube from oil system, any smoke? oil filler cap - any smoke when running and cap removed????? Exhaust system in hangers Starting - Have owner start it from cold. You'd see it on the dipstick too. Mar 10, 2010 · I have a 03 chevy lb7 and first i noticed oil in my paper filter and in the air breather tube. Om642 come with it from factory lol. Jump to Latest LB7 Intermittent Smoke. blocked turbo oil return,as it Mar 4, 2013 · 2004 lb7 ccsb 4x4. When this happens a drop in oil pressure is also noticed. it makes oil, i dont have the analysis results as of yet. I try not to let it bother me. Well after I get to my destination I quickly learn it is not burn off. It also mentions high levels of lead. Heavier oil and Jan 26, 2009 · Hi guy white smoke not enough heat ,black not enough air,blue bad injector,turbo seal on hot side which also needs back pressure to keep oil in,blocked exhaust,stuck waste gate,obstructed air intake,to much vacuum at ccr valve (hose goes from v/cover to v/cover in front of turbo )where as not enough causes leaks. I've read all the post and injector replacement appears simple enough. Using about 2 quarts of oil per 5k miles 11. Mine was plugged and it will through oil all over the under side of the truck. I have little knowledge of reading balance rates on the duramax platform and wanted to know what you guys thought. Just bout an 04 LB7 with 158k. it will seperate on the towl. The oil is come out of the drivers side uppipe. There is some oil that comes out of the breather tube by the oil Apr 21, 2013 · Going down the road today I come to a stoplight. Aug 27, 2017 · 03 lb7 oil in coolant Thread starter Wildhare54; Start date Aug 26, 2017; I see no smoke at all. At least I think it's the vent. Jul 18, 2014 · Blue smoke should be oil. troy:cool Feb 11, 2015 · Smoke (RICH with Diesel Droplets, burns your eyes, and easily to sniff with your nose), or it's a light Blue haze of Oil Smoke or a White Smoke. Fuel is hard to see, but when dropped on a towel, it seperates from the oil. Nov 16, 2019 · Bought truck earlier this year its a 2001 gmc 2500hd LB7. I put a tech II on it and tried maxing the pump out and it would only make 13,xxx when I commanded it to make 23,000. I ran my LB7 for 138K miles on the OEM injectors and was using synthetic oil. got it home could not get it started had a leak out of the fuel filter bleeder screw , fixed that got it to run and its running pretty rough. If you have fuel in the oil, it will have no problem running off the dipstick and onto the paper. Should i be worries or is this nornal? Oct 5, 2023 · Blue colored smoke would most likely be oil as suggested by the leaking turbo seals. [img]smile. Any ideas? Hope I didnt just buy a turd. 5 gallons. if there is fuel in the oil it will look like a little circle around the oil spot. I have a long bed so my tank is 34 gallons. I should have done a compression test first. said that in the blow by there was a "T" installed running into the air filter box and that that was where the oil was coming from. About to get new injectors and indications shift to other issues. Truck is an '03 Duramax/Allison with 220,000 miles. Drove good and no smoke on acceleration pulled oil fill cap off no smoke or blow by at idle. You’ll also experience loss of power, excessive smoke, rough idling, and engine misfiring. 5 LB7 Forums. Mine was originally Black, RICH, a Diesel Droplet Mist, but after cleaning with several cleaners, it turned to a Blue oil smoke, because of the Faulty Install of the O-Rings at the Factory. I brought my lb7 in last year to get the injectors checked out because I was getting some white smoke at idle. Its a little bit. Jan 9, 2024 · Also had them change the oil and filter after the fact from all the soot put into the crankcase from the injector over fueling. Took it to a shop and they determined that the injectors are fine (replaced at 170K). On idle it doesnt smoke at all. I've used 1 quart of oil since the last change in about 3,000 miles (Rotella Syn). Un-burned fuel travels through the exhaust system & exits out the tailpipe which will produce a scent of rich, un-burnt diesel. I open the oil fill cap while its running and i can faintly see white smoke coming out. Jun 29, 2017 · Google "duramax LB7 white smoke out oil fill tube" lots to read. I also had a slight idle surge and rough idle. Another possible problem is you have a bad piston- remove the oil cap and see if it puffs like a coal train when running- Mar 1, 2016 · It doesn't burn so much oil in the aggregate though as I never have to add oil except at oil changes every 5,000 miles. All balance rates Oct 3, 2010 · Hi guys I am new to the site and new to diesels. if thats the case injectors are suspect or possibly the fuel return lines inside the valve covers. Customer: my duramax diesel oil filler tube was leaking oil put new o ring in and 3 days later front main is leaking excessively also noticed slight change in idle roughness and possible blow by any info would be awesome jason Dec 15, 2019 · Some white smoke is normal at startup, especially in the cold, however white smoke would not be oil burning, its water vapor (steam) and possibly raw diesel if you were to have an LB7. If you see it pop off right away, there’s excessive pressure in the crankcase. I assumed it to be stuff still burning off from the install. Couple of questions: 1. You can run the engine with the covers off and watch for the leak at the lines and injectors also. But there shouldn't be much/any pressure. I've barely hit 140k shit better not be wearing out. Oil is not milky 8. Nov 18, 2010 · Now over the past 2 weeks it only smokes on acceleration and its black and blue smoke. NAPA should have test kits and lab instructions - or talk to a NAPA Service Center. Sep 1, 2016 · My little brothers 04 LB7 is do for an injector job, or at least I am assuming so because it just started to white smoke pretty bad. I also put a lot of farm diesel in it from a big pump at work. Flip the oil cap over on the the fill tube and it will vibrate/slide off slowly. May 27, 2015 · Here is the TSB for a possible issue. So little that my 4k camera cant pick it up. try finding someone with efi live or a tech 2 and get them to Aug 28, 2014 · Thanks Guy's I checked for trouble codes and got all app codes, circuit a high, circuit b low, circuit c high and one for low, and it does idle smooth but as soon as you touch the go pedal it shakes and misses, did a quick check got 5 volt refrence voltage on all 3 wires, checked the harness were it goes trough the fire wall, it looked good so I replaced the app. Once th engine is warm it get a ton of smoke pouring out of everywhere to include excess from tail pipe. I've seen some new cars smoke a little at idle , i think its just the difference from one engine to the next and personally i wouldnt stress out unless it was pouring out plooms of smoke( black smokes ok ) and useing oil. like enough to make people roll their windows up at a red light LOL. Fuel in the oil is usually a sign of a bad/hung injector on an lb7. Everything I read pointed to pistons, rings, etc. Do the test MadMax17 said: with the truck running, take the oil fill cap off, flip it upside down, and set it on the oil fill tube. Oct 2, 2020 · My truck (2002 LB7 Engine) has been smoking white since I purchased it. So the truck will smoke a little white smoke while idling but it’s completely random and doesn’t happen that often . 6L LB7 Duramax Diesel Oil Leak from PCV Vent Tube Oct 25, 2010 · I have only recently noticed that my truck is smoking from the exhaust at idle and acceleration, and it also blows smoke out of the oil filler cap, enough so, that it will blow the cap of once it has been unscrewed. Nov 14, 2010 · My lb7 with 113,000 miles has white smoke/steam that comes out of the crankcase breather tube by the oil pan. When I stared adding 2 stroke oil is was around 2. I havent checked balance rates or anything like that yet. Also when I pull the dipstick and open the oil filler cap I get a white steam/smoke blowing out when the truck is running. Sep 5, 2023 · Truck does not smoke at all out of the exhaust, but it does have the dreaded blowby coming out of the oil fill tube, dip stick and the PCV hose on the front passenger side of the engine. You can also look for an oil film around the tube or diluted oil in the crankcase. #PIP3380: 6. 6L LBZ, BD exhaust manifold, SD manifold, Airdog 100, S&B cold air kit, MBRP 304 catback exhaust, Tony's PCV reroute, Autometer boost & Pyro on a-pillar, Diablo Predator, 43 gal. The breather pipe comes out of the alternator bracket at a higher point and then goes down and is open to the air at the right front of the engine. So when I got home I changed fuel filter and oil. I wanted to buy a 2008 Mercedes GL450 with a om642 but got backed away once I saw how many oil leaks it had. Injectors don't cause blue smoke. Bought it to be a parts truck but want to see how much it would be to fix, if it's just an injector then i'm gonna change it and drive the truck. Nov 11, 2016 · I am having a problem with my 02 duramax. Reverse is the worst offender in terms of smoke volume. There is some oil that comes out of the breather tube above the Mar 10, 2010 · I have a 03 chevy lb7 and first i noticed oil in my paper filter and in the air breather tube. I was testing the oil every 5K and got a bad reading for fuel. Guess as there are no comments here, I will see more of whats going on with the next oil analyst. Injectors were changed like 20K ago. It only happeneds at a stand still tho when i stand still it wont smoke then when u sit there for a few mins it blows a tint of Chevy / GMC Duramax 01-04. I have done a coolant pressure test and am not Apr 18, 2021 · Hey guys, I've got an LB7 where the oil was fairly clean but when it ran it blew green sludge out the oil fill tube and had some light smoke out exhaust. It's a metal tube that is on the front left of the engine as if you were standing in front of the truck staring at it. His truck runs decent, but will smoke a decent amount after idling for awhile, otherwise it is mostly clear. Took out the dipstick and it has a stream of it with the cap on but take the cap off and they both start puffing. Oct 22, 2010 · So I have a 2003 Lb7 with 170k miles. Took it to the dealerThe diesel mech. I started reading about the blow by issues. but even more when in reverse/drive. Same thing seems to start a Jul 11, 2013 · 2009 CC/SB/ LMM - 537 rwhpends"" 2006 CC/SB/ LBZ- Sled pulling truck. No egr, I suspect head gaskets, i'm slowly gathering all the stuff to attack this beast, in the mean time I dropped a package of Cadillac pills in the surge tank, seems to have stopped the flow for now. At least nothing noticeable. Jun 26, 2009 · I'm puzzled about my blue smoke symptoms. Put a new pump on drove it again everything seemed good. Jan 22, 2014 · Mine smokes out the breather too. The oil leveling is not resizing and I actually changed the oil yesterday and it still looked pretty good. It helps a lot for blow by and it helps the oil a little by trying to get blow by gases out and not contaminating the oil. Apr 4, 2011 · Duramax First Generation: 2001-2004 (LB7) Smoke in headlights. There is some oil that comes out of the breather tube above the Jul 10, 2018 · My mechanic is very reputable and has done injectors on many LB7's. I put seafoam in the fuel filter and double dosed my fuel with howes and it went away. Apr 4, 2011 · my truck is doing the exact same thing and i have one injector stuck open and possibly two more that are bad. When I had the injectors out to replace them I saw a spot of black on one of the copper washers that seals the injector in the injector cup. Sep 15, 2015 · 01 LB7 Balance Rates Have a LB7 that a friend just picked up and supposedly had #7 and #5 Injectors replaced. Aug 2, 2023 · 2003 LB7 Stock 153k miles. Mar 10, 2009 · Tow Pig-03 LB7/Alli EX Cab Long Bed, Dually, alot of miles dents scratches and dents, EFI Alli -07 LBZ/Alli, Cognito , PPE , Airgdog , Bilstien, EFI McRat/Neens tuned , trippin auto meters, other things and stuff Feb 5, 2012 · Started it looked for smoke at idle and nothing. I kept up his schedule but started adding 2 stroke oil every fill up at about 100,000. Code popped up, P0301 (#1 cylinder misfire detected). :/ Thanks. At idle when warm it smokes a little white and when taking off its white. LB7: Jump to Latest 7K views Nov 26, 2015 · Adam 07 GMC, 2500HD, 4X4, CCSB, LBZ, SLT, Idaho Rob DSP 5, 4" front pipe back, 3" dp, cleaned up the stock turbo and installed a 10 blade turbine wheel (let the whistling begin), modded oem airbox, egr blocked, 265/75-16 Motometal 951 w/Terra Grapplers Mar 12, 2008 · I have a fleet of big trucks, petes , freightliners , etc and some seem to smoke a little at idle others are clean burning . All the injectors have been changed and there is a misfire on #5. 5 inch down pipe, Full turbo back 5 inch exhaust, Airdog 2 165, red head power steering gearbox, Tie Rod Sleeves Mar 28, 2022 · It looks and feels like oil, nothing that resembles antifreeze including the smell. My dipstick and filler have a small amount of smoke as well but nothing to worry about. Oil does. I am getting white smoke at idle. Nov 1, 2016 · 2004 GMC 2500 HD Duramax I started getting exhaust smoke at 100,000 miles and had to have the injectors replaced. from my understanding the smoke is usually a red flag for injectors, but being white smoke could also either be a headgasket or a leaking injector cup. Nothing coming from filter housing. At that time we also noticed some Aug 11, 2005 · As John said a little oil around the end of the LB7 vent tube is normal. Check the oil filter seal. Has visible puff clouds coming out of PCV vent and from the oil filler port when the cap is removed. smoke from burning oil is bluish black due to the incomplete combustion of the oil. twhwg sniyrz fwole rne oimta eyry rod mjsejtc vgfyo amjpw pekv sazkxjp aapegl bgsssv blufkxs