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  1. #1
    Chief Petty Officer
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    Default 1987 Johnson 90 Fuel Pump guidance

    My fuel pump (non-VRO) is spraying fuel from between the black screen/filter cap assembly (322759 #4 on diagram) and the tan wagon-wheel-looking "cap to pump gasket" (312679 #2 on diagram) now that I've replaced that gasket. The thing that is bothering me is the cap assembly has a rubber o-ring that isn't mentioned in my OEM manual and isn't present on my parts diagrams. I've got to be missing something here. My next thought is either to try to pick up any old o-ring of similar dimensions and/or buy the cap assembly and hope it comes with a new o-ring. The old oring visibly looks fine but I can't think of what else the problem would be. It sprays an absurd amount of fuel when I pump the bulb. Tried without the oring too. It's driving me nuts because it's so simplistic.

    Thanks in advance,
    -E

  2. #2
    Senior Tech Advisor tashasdaddy's Avatar
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    Default Re: 1987 Johnson 90 Fuel Pump guidance

    personally i would just replace it with.

    Part Number: 0385784
    Description: FUEL PUMP AY
    FLORIDA GATORS
    TEBOW Country



    Please, NO PM's (Private Messages) regarding boat/engine problems. they will not be answered.
    That is what these forums are for. Post your questions, in the appropriate Forum.

  3. #3
    Supreme Mariner kenmyfam's Avatar
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    Default Re: 1987 Johnson 90 Fuel Pump guidance

    Replace it and be done with it.
    Marada 2100 Executive Series, 5 Litre V8 with Mercruiser Alpha 1 outdrive. 2007 K-Z Spree 260 RBH, all = a whole lot of family fun !!!!

  4. #4
    Chief Petty Officer
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    Default Re: 1987 Johnson 90 Fuel Pump guidance

    Sounds good, guys, thanks!

    -E

  5. #5
    Chief Petty Officer
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    Default Re: 1987 Johnson 90 Fuel Pump guidance

    This took 5 seconds to install and it worked great, thanks again.

    -E

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