Chevy and GMC Duramax Diesel Forum banner
  • Hey Everyone! Enter your ride HERE to be a part of this months Ride of the Month Challenge!

fuel pressure valve

  1. General Discussion
    I replaced my lml with a reman. Everything but the engine worked prior to replacing. Went to start it and only built up 300 psi on the high pressure side. I've replace the high pressure pump, the 2nd regulator on the rail and have checked all 8 injectors and none are losing fuel or stuck open...