It only has 400 miles on it, it was rode very little but started and kept up by atv shop , then new owner got it ,he was using it everyday for bout 6 months then this started one day while riding. I'm sure compression is like new but I'll check for sure in morn. , I looked at carb to head intake boot and it's in great cond. He was using it alot and uses seafoam every other tank but I did clean carb just cuz.i have looked at spark when tryin to start and it's a white blue hot, changed plug anyway, and when it does itl start right back up. Most times its just that sumtimes even after warm itl start up but if u touch throttle itl just die, only sumtimes? Itl idle for a long time then just die? It's crazy now I'm going crazy!