Re: 1957 Big Twin 35hp questions oil, engine "Bucking"

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June 10, 2015 at 12:58 pm #17903
Don
Participant

    US Member

    OK, if the engine is loosing RPM momentarily when it "bucks", this is not a clutch dog issue. Have you tried new plugs? Just cuz the plugs are new, doesn’t mean they are any good. Next, try the timing light to monitor ignition performance.