Need help with 110 cc wildfire ATV I replaced the wiring harness and put a new head on it and at first I was achieving 165 170 PSI after it ran for about 10 minutes it stopped running and my compression is now down to 125 any ideas could it be.
Thanks for any assistance anybody can provide.
My next option to try will be pulling The jug and seeing if there's any damage and if the rings and piston are okay.