Im new hear and heard some good information about this website so I decided to give it a try I was on my 200x atc and my buddy was on his yz125 and we where going pretty fast and his just quit for no reason he said sometimes it will sound like it is firing, and backfiring but he just cant get it to acctually go any answers?

Thanks guys I hope my cuz was right about this fourm.

 

SOMEBODY PLEAS

 

check for spark then fuel,if you have both then i would check compression.maybe rings are gone.i think yz is a 2 stroke check reeds also i have heard of them opening up a bit on some people good luck

 

fouled plug comes to mind

 

THANKS GUYS found the problem cloged carb and fouled plug now she is running sweat and my 4 stroke is still running sweat thanks