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EFI knocking or loud ticking from EFI plate 1996 Mercury 250

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  • EFI knocking or loud ticking from EFI plate 1996 Mercury 250

    EFI knocking or loud ticking from EFI plate 1996 Mercury 250
    Is this normal or is there moving parts inside EFI cover? Thanks

  • #2
    No knocking is not normal, not sure where exactly you are hearing noise but run a compression test to see if all cylinders are even, look at spark plugs to see if all are burning even. If it's an OPTI model check air compressor.
    Regards
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