sportsman 500??

[450rdr424]

after messing with the carb i think the valve clearance is off the guy is picking it up today

[yfzrider310]

Maybe check if your timing is off if your

[TravEX]

Have you tried a new air filter? Mine was doing all sorts of crap when my stock air filter played out. I put a UNI on it, and no problems since.

[450rdr424]

actually found out he had a bent rocker arm and i think something else was twisted cost him over $300 at a dealership thanks for all the advice it was just something internal i didnt want to mess around with too much.....