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  1. 11-16 LML Duramax Powertrain
    I've developed an issue with my fuel system where it's losing prime. You can press the plunger crack the bleeder screw to get the air out and it'll be firm for about 3 seconds then it's soft again. Also it does not matter on fuel level. It does it full or empty. I've also not noticed any fuel...
    filter base fuel fuel filter lml loosing prime
  2. 06-07 LBZ & LLY Duramax Powertrain
    I got water in my fuel. Dropped the tank and changed the filter. I was loosing prime. The filter is AC Delco. Changed the bleeder valve to brass, but I'm still loosing prime. The head is new (year old). What should I do next? Thanks for your help.
    loosing prime
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