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Thread: Efi fuel pump wont hold pressure

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  1. 07-31-2018, 07:26 PM #1
    Just puttering
    Just puttering is offline
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    Efi fuel pump wont hold pressure

    When i turn the key on the fuel pressure comes up and when the pump turns off the pressure goes away fast!

    I have a fuel pressure regulator on the fire wall with guage for efi and a return to the tank

    Why cant i plug the return and see if it holds pressure with key on? This points the the regulator being bad. And if it wont hold pressure then i need to pull the tank to check the fuel pump.

    If not how would you rule out the fuel pressure regulator before dropping the tank? I have opened the regulator and do not see anything that looks like it would drop the pressure!
    Last edited by Just puttering; 07-31-2018 at 11:06 PM. Reason: Added fuel
    Mk3.1 347 AFR 205cc Heads A9L EFI siemens deca 60lb injectors MSD 6AL ignition Vortech V-3 3 Link PS/PB

    -- If you can’t fix it with a hammer, you have an electrical problem ! —
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