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  1. R

    5.7 Indmar Crazy Fuel Pressure

    The only parameters that it hits are idle an its on the low end. Is there any way to pull a vacume test?
  2. R

    5.7 Indmar Crazy Fuel Pressure

    New pick up tube 3 new separate fuel pumps used same results. New fuel line new filter. New regulator. Only happens after warm up.
  3. R

    5.7 Indmar Crazy Fuel Pressure

    The fuel pressure drops off after 30 seconds or less of acceleration. The motor is a new long block multi port in a 2002 Shoal Runner.
  4. R

    5.7 Indmar Crazy Fuel Pressure

    Cap off no anti siphon valve.
  5. R

    5.7 Indmar Crazy Fuel Pressure

    My guess is somewhere in the electrical pump wires something is getting hot an dropping voltage maybe?
  6. R

    5.7 Indmar Crazy Fuel Pressure

    Multi port.
  7. R

    5.7 Indmar Crazy Fuel Pressure

    I have a 5.7 that has a new fuel pump, filter and regulator put on it along with all the sensors. The engine runs great for maybe 10 seconds after start up an then slowly starts running rough no power. At the time of start up its at 39/40 psi then goes down fast to in the 20s. Giving it any gas...
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