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Posted (edited)

I have had this stumbling for a while and it is just pissing me off. The problem is the bike misses or stumbles at anything but power band. The more load on it the longer it stumbles. Throttle position doesn't matter. Mine also smokes more than anyone elses. We all run 240 main jets w/ pipes. Mine was fine up until a month or so ago. Seems like it is running rich but these jets worked fine for so long.

 

Here is what I have tried new plugs,top end rebuild,new crank and seals, and cleaned carbs. I just don't know what it could be.Any suggestions?

 

Thanks,

Phil

Edited by stealth50
Posted

could be timing-maybe try a different heat range of plugs

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