Accelerator Pump Diaphragm Gas Leak

Discussion in 'General Ranchero Help' started by Nameless59, Jun 20, 2026.

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  1. Nameless59

    Nameless59 In First Gear

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    Accelerator Pump Diaphragm Gas Leak

    I've had it leak several times, no visual holes in Diaphragm, BF thought it was a thread screw issue. Tapped it out.

    This go around, leak again, I just spent last hour rubbing down the Pump cover. Before photo.

    Fingers crossed this is the contact seal issue.

    Anything else I could be missing?

    1959 Ford Ranchero
     

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    Nameless59, Jun 20, 2026
    #1
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  2. DJ Clinton

    DJ Clinton In Fourth Gear GOLD MEMBER

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    On my 2100 Holley, I bought 3 diaphragms before I got one that didn't leak.
     
    DJ Clinton, Jun 20, 2026
    #2
    Nameless59 likes this.
  3. pmrphil

    pmrphil In Maximum Overdrive GOLD MEMBER

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    Yeah, everything "Holley" branded is NOT made by Holley anymore :mad:
     
    pmrphil, Jun 21, 2026
    #3
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  4. andrewok1

    andrewok1 In Maximum Overdrive GOLD MEMBER SILVER MEMBER

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    China parts make Chinese Cars:Do_O
     
    andrewok1, Jun 21, 2026
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