Discussion Starter · #1 ·
Okay so I have a 99 foreman 450s that while giving gas from 1/2 throttle to wot is sputtering as a rev limiter is stopping it. Things I have done. Brand new cylinder new cylinder head adjusted valves to .006 new carb new spark plug new pistons and rings new battery. I have ran the atv and checked plug it is blackened pretty bad it is snorkeled and has aftermarket exhaust it's running all the stock jets any ideas I am really puzzled. ?