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Thread: hard start issues!!!

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  1. #1
    ok ill try that but whats the next step if thats not it?
    01 GMC Sierra, 141.6 db sound system, Nelson performance tune, flowmaster, k&n air filter, FLT level 3 tranny w/ 2600 stall, LS3 cam, LS6 valve springs, More to come

  2. #2
    when was the last time you changed the fuel filter? what do the plugs look like?

  3. #3
    fuel filter already changed 6000 miles ago and plugs look good
    01 GMC Sierra, 141.6 db sound system, Nelson performance tune, flowmaster, k&n air filter, FLT level 3 tranny w/ 2600 stall, LS3 cam, LS6 valve springs, More to come

  4. #4
    Join Date
    Apr 2011
    Posts
    130
    Sounds like the pump (really it is the one way check valve within pump) is getting ready to die. The check valve keep the fuel rail pressurized after shut the engine off until you start it next time. Stick a fuel pressure gauge on the rail and see what it is while you are cranking the engine over and experiencing what i call the dreaded carbureted start. It could also be a leaky injector leaking off pressure too. But this is the classic symptom of a pump getting ready to die.

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