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  1. Salemn2010

    Defueling lly please help

    No limp mode no codes and the truck will go to normal rpm range just a loss of rail pressure and power letting off the accelerate won't allow it to build pressure back up you have to slow down enough for the truck to idle down all the way then the rail pressure will build again. It's almost like...
  2. Salemn2010

    Defueling lly please help

    Thanks for the help. I'll look into it and see what I come up with.
  3. Salemn2010

    Defueling lly please help

    I'm pretty new to the diesel word. What is a race valve? Does it just allow more fuel?
  4. Salemn2010

    Defueling lly please help

    I have a 2005 lly that has a defuel problem. During hard acceleration(pedal to the floor) I will drop fuel pressure it only does it when full throttle any other time it is just fine. The trans dosent limp. And no trouble codes are set. During full throttle my rail pressure is around 25-26kpsi...
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