Re: Strange issue
Originally Posted by FMB42
Check for loose cylinder/head nuts. Make sure that the carb is both pushed all the way onto the manifold and tight. Check the spark plug for looseness and fouling.
And when you can, give us some more info such as; pre-mix oil brand/type and ratio, spark plug brand/type, etc.
Ditto.... sounds like it could be an air leak at a gasket or carb.
I dont always ride WOT, but when I do..I do my best to keep the rubber side down..Ride safely my friends!