Chevy/GMC Duramax 04.5-05 LLY Discussion of Chevy and GMC Trucks with LLY Duramax Turbo Diesel Engines

LLY Smoking on WOT

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Old Jul 30, 2009 | 10:12 PM
  #11  
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119000 miles and till runs like the day I drove it off the lot. Except now it smokes when doing 30 and putting the petal to the floor.

Who out there lives south of Houston and has either efi live, ppe, diablo, quad, or a tech II???
 
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Old Sep 21, 2009 | 02:04 PM
  #12  
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bump
 
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Old Sep 21, 2009 | 09:25 PM
  #13  
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Are you sure its not just turbo lag?
The LLY doesn't have a VG-turbo.
It sounds like it's puffin at low pressure.
 
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Old Sep 28, 2009 | 03:24 PM
  #14  
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the LLY does have a VG turbo that was the first engine that gm put them on
 
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Old Oct 6, 2009 | 02:57 PM
  #15  
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Sorry to hijack, but my truck is actually doing the same thing now...
I've only noticed it a coulpe times, but yesterday I was watching the mirror and at WOT at 55mph there was a pretty huge plume of smoke behind my truck, a nice cloud of exhaust...Wasn't black or really blue or dark, just a plume of gray-ish smoke...Tried to make it do it again after that and it would only smoke at WOT at really high speed in top gear....Is that normal? Could it be an injector?
 
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