Duramax white smoke not injectors. If you’re truly worried, do a manometer test.

Duramax white smoke not injectors Since it is a Lb7, to make sure that fuel is not being released under the valve covers which will destroy your bearings. Seems that everything points to injectors. Since it is a high-pressure common rail system, that means there is some fuel leaking into the cylinder at all times. There has been no coolant loss or oil consumption. Thanks though, and the white smoke problem remains. Gm says that is ok within range of +/-6. Nov 20, 2018 · I can't confirm but I wonder if the pressure regulator and CP are supposed to be leak proof. My truck was a 2004 GMC with 55k miles on itmy balance rates were ok except for oneit was in the +5 range at idle. Original injectors were changed about 70K under the special policy because of fuel in the oil. It is showing no diagnostic codes. Basically you have a injector or injectors dumping fuel. :help The truck starts and drives great, but the smoke smells like rich fuel, and i am only getting 12-13 mpg. Sep 8, 2016 · If you are not having cooling issues, then it would lead right to your injectors. Is white smoke at idle always injectors, or can their be other causes. My injectors had to be replaced but lucky for me they were under warranty. Yesterday morning it started leaking white smoke from the exhaust when stopped at idle. you might have a little ring wear contributing to the blue smoke, as its probably burning a little oil, but i dont think that would explain your issue, and if its Nov 15, 2009 · My 2004 LB7 only makes blue smoke after warm up. The reason for white smoke is challenging to identify sometimes, but if you follow the steps mentioned in this article, you can easily find the actual cause. check your oil levels and smell. May 8, 2009 · I took it to the dealer to have the injectors checked out and possibly replaced under warranty about 10 days ago. Nov 2, 2015 · Other causes of white smoke include lack of compression, or water/coolant entering the combustion chamber. Black smoke indicates excess fuel is being injected into the combustion chamber and/or not enough air is present. Jun 13, 2014 · Talking about the truck in my signature. No codes though. 1 Customer: I have noticed that when at idle, I see a white smoke,not black, coming from the exhaust. 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. At a stop it starts to ploom then I put it into neutral and then it stops. DSP5 EFI Live from Calibrated power, Air Dog 100, 5/8 Transmission Cooler Lines, XDP Transmission Cooler, ppe t-case brace, Edge CTS3 with EGT probe + Pressure Sensor. However, it sounds like a real possibility. We ended up cleaning the injectors and replacing fpr which seemed to solve the problems. 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 had gotten used to the little haze that was there from knowing that the injectors were out. i turn Dec 30, 2010 · Hi, I just got done doing all 8 injectors from gm and a water pump. Mar 12, 2008 · It does ploom white smoke though unless it is really warm out then it doesnt even smoke. The Duramax diesel engine should not produce any smoke if appropriately maintained. I have a 2004 duramax with 155,00 thousands miles on it With my last duramax, it also started blowing white smoke when running down the highway. To each their own I guess. Does not burn any noticable Sep 11, 2009 · Once in a while my truck will puff out a little white smoke, about once every couple of weeks while idleing. If it's true then shutting off injectors with a scanner may not stop the smoke since the leaky injector could still leak and smoke. Ramp it up 1 kpa at a time until it goes away. Feb 12, 2011 · Not going to hurt anything 99% of the time, but an injector could stick open causing it to burn a hole through the cylinder, or it could cause cylinder wash from the excess fuel. Apr 25, 2012 · Heres the deal. If you’re truly worried, do a manometer test. Is or has anyone else had this problem? Could it be the vacuum pump or turbocharger waste gate? Oct 23, 2018 · I made sure it was not hydrolock started truck up when I did I guess it steam clean the top end of the engine because it bless a lot of black sh*t out of tailpipe ever since been getting white smoke that smells like fuel. Jul 16, 2011 · White smoke is almost always caused by bad, or sticking injectors. While white smoke is not “typical” on any year duramax, white smoke from the filler neck is perfectly fine, and will not cause harm, and is not anything to be concerned about, so long as there is zero pressure behind it. One way to rule it out would be to use the DVT and control pressure. Mileage is normal and it pulls a 5th wheel up a 7 per cent grade at 52 mph. blocked turbo oil return,as it Dec 3, 2012 · I went to go home and got less than 2 miles from the shop and it started to idle rough. White or Blue smoke at idle when cold If the smoke clears in less than 1 minute, this would be normal depending on temperature and altitude. I stop and it still doign it at idle. Friday I drove 330 miles to Vegas and another 330 miles back home with no problems. May 31, 2017 · Rather than dump a ton of money into injectors, I would get a tune from a reputable tuner first, and see if they can't clean up most/all of the smoke (both black and white). Apr 3, 2018 · Use the EN-47589 (same block-off caps as #9011 SPX Miller tools) cap set to cap off the injector rail to isolate the injectors from the injector return system. The problem might not be injectors, but tuning. If it were just a little white smoke I wouldnt care. BLUE SMOKE Jun 7, 2011 · I have an 03 (LB7) with 136k miles. I just had the injectors replaced on Thursday by a certified diesel mechanic. Sep 12, 2013 · Any time the truck overfuels at idle you will see white smoke. im thinking that one of those two things is your issue. Dec 7, 2012 · 2004 lb7 ccsb 4x4. So there is a chance your FPR is going, or you got some bad fuel causing an injector to stick. So I assumed right away I had and injector issue. Did not have hard start but truck was not running Tip Top eventually threw a cylinder 4 misfire. I was testing the oil every 5K and got a bad reading for fuel. Once my truck has gotten good and warmed up say after I've driven home from work or to town and at a stop light, if I'm stopped but still in gear my truck runs rough/lopes and puts out clouds of white smoke. 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. NAPA should have test kits and lab instructions - or talk to a NAPA Service Center. For example, larger injectors that have not been tuned will haze white at idle from overfueling. I ran my LB7 for 138K miles on the OEM injectors and was using synthetic oil. blue smoke is oil, black smoke is excess fuel in the combustion stroke (rich condition). Dec 1, 2020 · 2002 Silverado Ecsb lb7 184k miles, LDS Sac 45 injectors. Which will destroy the motor. Jul 10, 2018 · I highly disagree that white smoke is a bad thing. Turned around to go back to the shop (where my motorcycle was), and at a stop light it started to pour out white smoke. 6L Duramax is smoking like a chimney at an idle (white smoke). 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. 5 LB7 Duramax Powertrain. LBZ FPR. Oct 14, 2019 · white smoke is either coolant getting burned or raw diesel going out the exhaust stroke. You'll probably find it pulls harder without the smoke anyway. Mar 30, 2008 · My 2002 Chevy 3500 6. Most if not all of the time you can drive it without any problems, but after a while the smoke will get bad enough that it is annoying! Mar 24, 2006 · I started getting a slight white smoke at idleafter a single event of white smoke at a stoplight that smoke out the car next to me. This can be caused by worn/leaking injectors or restrictions in the air intake system. I am suspecting possible EGR problems. Took it to a shop and they determined that the injectors are fine (replaced at 170K). But we all know the injector is on its way out. May 22, 2012 · So had all 8 injectors replaced about a year ago, (less than 10k miles) everything has been fine, then this moring i start the truck. Upon Oct 6, 2009 · 01-04. Looked for oil residue in the intake hoses and found none. I brought my lb7 in last year to get the injectors checked out because I was getting some white smoke at idle. This problem also happens when idling in drive but that comes and goes. They finally got back to me and said that the injectors checked out fine, and they are not sure what is causing the smoke. It does not miss at idle and performance is as good as ever. The truck runs smooth and seems to have good power. I replaced the injectors and the problem was gone. Sep 29, 2010 · A bad injector that white smokes will not show up on the balance rates. When I rev the engine it smokes bluish/white smoke just like before. White Smoke Problems (not injectors) Jump to Latest 21 - 36 of 36 Posts. It has 135,000 miles on it. Not just a little but a ton. Then turn off controls and watch it come back in about ten seconds. Truck has 140K. Jul 8, 2013 · Sometimes when my truck first starts up I get a slightly white haze smoke but after I get warmed up it goes away and when I rev it up there is no smoke, if injectors were bad wouldnt there be a cloud of white smoke?? May 13, 2021 · 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). I have seen the same problem with intermittent white smoke some of the time, while other times there is absolutely no smoke. I also had a slight idle surge and rough idle. 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. BLACK SMOKE. It does not smoke after intial take off. (has been a few days) and take off out of the drive way, and look back and I am leaving a trail of white smoke. A few days ago I was towing a mini excavator and was stopped at a quick mart and all the sudden alot of white smoke came out for about 10 seconds then stopped and has not smoked since. nxuf okhil kze bltuz ficmi nwk ulog eftec bbclxnw nfuz waml guve usfvw xrtjod ukdj