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1-12 of 12 Results
  1. Duramax First Generation: 2001-2004 (LB7)
    Hi! So, I’ve got an 02 duramax with a white smoke problem that I’m at my whits (and my wallets) end with. Started this spring when my injectors went bad, tons of white smoke both at idle and under throttle. Replaced them all. Week or so later the injector pump, week or so after that the lift...
  2. 6.5L Diesel Engine
    Hello all happy holidays, my 93 starts up fine with the typical white bluish smoke for about 45 seconds and then levels out and has absolutely no smoke coming out the tailpipe consistently for about 2 or 3 minutes, later when it drops back down to a low idle the white smoke returns any ideas on...
  3. Duramax Fourth Generation: 2007.5-2010 (LMM)
    I just bought this 2009 LMM about a week ago. When I was driving it today white smoke started coming from underneath the passenger side of the cab. I couldn’t locate exactly where it was coming from but did notice some spots where oil has been leaking. I will attach the photos of what I found...
  4. 6.5L Diesel Engine
    Puffing smoke out of oil filler cap when I remove it and oil dip stick tube when I remove it. Is this normal? What would it be thats causing this? I did suck a rag into num 3 cylinder when I was checking the optical sensor. Long story short, I could not up shift while driving and wondered...
  5. 6.5L Diesel Engine
    I have a 2000 GMC 3500 6.5 turbo diesel dually truck starts easy idles fine but when you get on the gas it starts popping and cracking and blowing white smoke and will not rev above 2000 RPMs person I bought truck from said it needed injectors so replace the injector nozzles and trucks still...
  6. Duramax First Generation: 2001-2004 (LB7)
    The truck is an 03 Silverado 2500hd 6.6 duramax with the 5 speed Allison transmission. I don't know the mileage because the instrument cluster was changed before the guy I bought it from bought it(so he says). When I really tromp on the pedal the smoke turns black which it's supposed to I think...
  7. 6.5L Diesel Engine
    Howdy all. This is my first time posting on the board as I need the expert opinions of the group for an issue I have been unable to find a resolution to. I have a 1994 K3500HD crew cab 8’ bed dually with the 6.5 turbo, 4L80e, 410 gears, 233,919 miles. The original motor blew a head gasket at...
  8. Duramax Second Generation: 2004.5-2005 (LLY)
    So I just picked up an lly a few months ago and have been slowly upgrading parts and getting it the way I want it. It's got 190k on it and just had the head gaskets done before I bought it. It was smoking quite a bit when I bought it so I checked injector rates and found that I had 2 out of spec...
  9. 6.5L Diesel Engine
    I recently bought a 1994 Diesel Suburban, with the intention of it being my first rebuild. It is also my first diesel, other than my tractor. The engine has some issues that I would like to address before tear down, so that I'm not damaging it when it gets put back in. I'm hoping some of the...
  10. Duramax Third Generation: 2006-2007.5 (LBZ & LLY)
    When I start the truck, I get a small puff of white smoke! What could cause this? LBZ, 280K.
  11. 6.5L Diesel Engine
    Hi my TOUR BUS IS PUFFING MORE WHITE SMOKE THEN WILLEY NELSON ITS, A (2000 chevy G3500 express school bus 6.5l L65) Has white smoke from start tell i turn the key off .... I do mean smokes heavily so heavily in fact that I see why they keep the six five in military applications even if they're...
  12. Duramax Third Generation: 2006-2007.5 (LBZ & LLY)
    I have an 06 LBZ with a built motor that is bore 20 over with a fleece 68mm with a wicked diesel cp3 upgrade and 45 over injector nozzles and Idaho robs tune. Every time I start it up it blows a puff of white smoke and if I leave it in a higher tune the worse the smoke is. Is this bad, alright...
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