Reply To: 1960 40 HP – Bottom cylinder misfire

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November 2, 2026 at 8:13 am #330890
Don
Participant

    US Member

    Well, I wouldn’t go that far.   But, you need to abolutely make sure that it is an ignition issue that is causing the cylinder to misfire/drop out.  Are you sure there is no internal water leak causing this problem?   It is time to start over again with the ignition, I fear we have missed something…

    That being said, you could simply swap the mag plate assemblies with the 58 engine, perhaps that might point something out…..