Recently put a top end in my 2006 yz250. Ran great before not so much now. Has a pretty good bog on top when the powerband hits. Runs great on stand revs up fine. I did clean up the power valve with carb cleaner when cylinder was off. Didn't remove anything just hosed it out. Anyone have any idea what it could be? I've done the following with no change
New reeds
Cleaned n rebuilt carb with new jets n seals
New plug
Checked all wire connections
Yes piston is in forwards
No there is not a towel in air box.
Fuel is brand new and its had the same 110 octane @40:1 since new
New reeds
Cleaned n rebuilt carb with new jets n seals
New plug
Checked all wire connections
Yes piston is in forwards
No there is not a towel in air box.
Fuel is brand new and its had the same 110 octane @40:1 since new