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  1. Duramax First Generation: 2001-2004 (LB7)
    Will a bad fuel pressure regulator cause high rail pressure and a rich fuel mixture? Mines been hazing for a little while but has gotten worse the past few weeks. Injectors checked out fine when I bought it in September of 2021 and I have only put about 4 thousand miles on it since then. Just...
  2. 6.2L Diesel Engine
    a year ago i had the injector pump replaced on my 84 gmc sierra c1500 6.2. I've been trying to find out the fuel pressure requirements for this injector pump so i can make sure my fuel system mods aren't causing lower pressure than the pump is rated for, but i'm not having any luck. the ip came...
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