apex stutter at wot

[FlyinA]

Try a fuel additive to clean the injectors. Dirty injectors could cause lean high rpm running and occasional stumble at idle. Try about 10 oz. of Sea Foam in your next tank of gas and then the stock settings might be OK. Good idea to do this yearly anyway.

 

[TBay Sledhead]

If TORS is activating the engine won't even rev to engagement rpm. Usually around 3,000 rpm.

 

[ebockus]

hey hey tbay sled head. i was born n raised there. moved away now. anyway i did run sea foam Thro it earlier. no change. i have yamaha ring free in it now. i pounded the throttle a bunch today again in the field. it did it once but not near as bad. so its not the tors. maybe it was the plug i changed. the idle seems alot better now. its still revving nice. its only if i pound the throttle from a very slow rolling speed. its getting better anyway. alot better