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1999 90hp johnson

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  • 1999 90hp johnson

    under throttle 2800 rpm and up engine starts to act like it missing bad replaced plugs wires coils when i changed the plugs they were wet could it be a fuel or air problem lower rpm runs fine thanks for any help

  • #2
    If you can check spark at the higher rpms. You should also complete a compression test. A defective powerpack can cause this issue. Could be fuel related, but start with ignition and compression first.
    Regards
    Boats.net
    Johnson Outboard Parts

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