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  1. 10-25-2018 10:16 AM #1
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    figure8
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    Unhappy fuel pump breaks

     



    I have broken 2 Holley fuel pumps , one right after the other. First pump had run for at least a couple years, then the casting broke. Replaced it and about a week later it broke in the same place. Anyone else had this problem? Could be just bad luck, but somehow I think something else is going on.
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  3. 10-25-2018 11:57 AM #2
    Dave Severson
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    Quote Originally Posted by figure8 View Post
    I have broken 2 Holley fuel pumps , one right after the other. First pump had run for at least a couple years, then the casting broke. Replaced it and about a week later it broke in the same place. Anyone else had this problem? Could be just bad luck, but somehow I think something else is going on.
    Mechanical or electric pumps?
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  4. 10-25-2018 01:04 PM #3
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    Quote Originally Posted by Dave Severson View Post
    Mechanical or electric pumps?
    mechanical
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  5. 10-25-2018 02:06 PM #4
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    What brand of engine?
    Mike

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  6. 10-25-2018 02:12 PM #5
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    could be the rod is to long??? Chevy. bolts loosen and gets sideways??
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  7. 10-25-2018 04:39 PM #6
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    Have you changed cams?
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  8. 10-25-2018 09:09 PM #7
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    Try a double gasket.
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  9. 10-27-2018 04:16 AM #8
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    I’ve seen that happen to a couple other guys also, although I don’t know why. The only thing I can think of is maybe the cam lobe that operates the fuel pump has too much lift, or it was ground with to aggressive of a profile. It could be a tolerance stack up between the cam, block, and push rod.

    If it has too much lift, the double gasket trick may fix it, or cut out a spacer shim from a piece of sheet metal, or grind the push rod a little shorter.
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    Steve
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  10. 11-02-2018 06:58 AM #9
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    thank you. I'm changing to a Carter pump, and I will double gasket it.
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  11. 11-02-2018 09:26 AM #10
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    Make sure you have the correct push rod for a small block---------

    and did you change cams?????????????????
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  12. 12-18-2018 02:57 PM #11
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    OK I finally got it figured out. Was looking the wrong place. The engine was loose on the mounts and would slide into the frame. Fixed now.
    rspears and 40FordDeluxe like this.
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  13. 12-18-2018 03:21 PM #12
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    Wow I would.never have guessed THAT.
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    EG
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  14. 12-19-2018 05:33 PM #13
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    Quote Originally Posted by firebird77clone View Post
    Wow I would.never have guessed THAT.
    I had it nailed from word one, just wanted to keep everyone guessing.
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  15. 12-19-2018 07:17 PM #14
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  16. 12-19-2018 09:32 PM #15
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    Well there you go. Easy fix at least. What kind of car/frame are we talking about here? Is the pump pretty close to the frame?
    Steve
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