I know this may not be the best place to post this, but i just can't bring myself to subscribe to a yamaha forum.

My quad was running fine until yesterday, when i let the clutch out too quick and it popped up and i rolled off the back and it stalled.
Now it rarely has spark, and when it does it is usually inconsistent and weak. I swapped to coil out for one on my parts bike, but no dice. the problem didn't change at all.
Any ideas anyone?

 

wot yamaha ?quad? this is cbr forum get a honda or get out with your yam quad

 

I'm willing to bet he owns a Honda. He's actually being loyal. Yamahas are awesome bikes anyways, imo.
Sorry O lively I don't have any advice... You could check out R6Central.com ~ bunch of good guys over there.

 

Plug/plug wire is bad. Put a honda sticker on it and it will run much better,lol.