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  1. #1
    Member
    Join Date
    Feb 2007
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    Gilmanton
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    10

    compression on 90 hp 1996 johnson v4

    I check the compresion on my engine the right bank was 120psi on both cyl. on the left side the top cyl. was 110 and the bottom was 105 i was reading in my book that there could be a differents between left and right bank does this sound bad and should i pull head on left bank to check inside ??

  2. SC Club Moderator ChampioNman's Avatar
    Join Date
    May 2004
    Location
    Crawfordville, FL/Lake Hartwell, SC
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    72,201
    #2

    Re: compression on 90 hp 1996 johnson v4 (whelanIII)

    You are in spec. Time for a de-carb though.

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