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  1. #1
    My Boats:
    1998, Rinker, 232CC
    Join Date
    Dec 2002
    Lawrenceburg, IND

    Question Stock fuel pressure?

    What is the stock setting for a 454 mag efi GEN V? I have a 454 mag,with 502 injection, with 500 efi cam, and gil exhaust and it runs so rich I can't keep plugs in it?

  2. #2
    VIP Member VIP Member Back4More's Avatar
    My Boats:
    353 Fastech
    Join Date
    Feb 2002
    Lake Michigan
    As per Merc Service Manual #16...

    "With the engine running and the regulator vacuum line disconnected, fuel psi at the pressure test connection should be 34-38psi. If the pressure is too low, poor engine performance can result."

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