a couple days ago i was out at a gravel pit not rippin but just puttin in and i went up the hill didnt romp on it or anything and as soon as i got to the top and started to go back down again it shut off.

i checked the gas and on off switch.. it has spark and fuel i did a compression test and it read zero..

cam chain snap?

it turns over fine. i dont hear clunking.

oh and it will backfire every once in awhile

but it was odd it went right up the hill no problem and then died

 

chek ur batterie and ur cdi ur batt is probably low that makes it sputter and ur cdi is probably not working properly

 

No compression! broken chain or rings!!!
Backfire on this is either low voltage or out of timing

 

okay battery is good i did a load test.

i will add this.. when i ride doubles (i know ur not supposed to) but when the rear shock would compress it would sound like my valves were stressing or my chain was 'whipping' like bouncing but from the header area. i thought it was a loose header spring.

i wanted to ask and make sure/ try to pin point the problem area before ripping it apart