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Thread: Holley 12-303 Fuel Pump

  1. #1
    Join Date
    May 2018
    Location
    Jasper, IN
    Posts
    2

    Default Holley 12-303 Fuel Pump

    I installed a Sniper EFI on a Olds Cutlass with a 455 with a Holley 12-303 fuel pump module. I'm getting the 5 sec 12V on the blue fuel pump wire from the Sniper for fuel pump prime, but the pump doesn't prime. I've checked & rechecked the wiring to the pump, and it's correct. It appears that the fuel pump is a dud. Any suggestions?

  2. #2
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    17,323

    Default

    If you think the fuel pump is defective, contact Holley Tech Service (LINK).
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  3. #3
    Join Date
    May 2018
    Location
    Jasper, IN
    Posts
    2

    Default

    I'm actually on hold with Holley tech support. Holley tech said to return it for a replacement.
    Herb

    66 El Camino, 408LS/T56
    66 Chevelle, 509/T56
    63 C10, 454/4L80E

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