Home › Forum › Ask A Member › 1960 johnson 10hp bad miss › Re: 1960 johnson 10hp bad miss
December 2, 2016 at 2:32 am
#48363
Can we assume you have tried simply turning the slow speed needle out a tad to richen it up? More to your question though, sure it could possibly be the top seal —or the lower seal. It could also be some other crankcase leak. But before you go those places, how about the carb/spark synchronization? Carb opening too soon will make it sneeze.