Ok. It scared the sh*t outta me because its a brand new top end. I think the idle was turned all the way up but i dont have a book and not sure how to adjust the carb. Is there a thread on that?Massive air leak. You shouldn't start it again until fixed but if this happens again just put it in like 3rd and pop the clutch it will stall.
Let me give a little more details. New piston,cylinder and gaskets. About 125 compression. Started at first but idled to high. Was looking up info and my buddy might have messed with the idle because the seat was off when i came back out (of course he says he didnt). Picked this thing up for $300 so i really wanna get it going.Haha ya it sucks I've had it happened. Do you still have the TORS brick on top of your carb? If so the idle screw is under your seat it's like the size of a nickel, guess you could try that. But you really do need to leak test it. I know less than most on this site but I've read prob every post and a runaway is a air leak 99.9% of the time.
http://www.blasterforum.com/threads/build-and-use-a-leakdown-tester.10663/
When i got this thing it only ran by being pulled by another 4 wheeler. Compression was 40 so i pulled top end and found a busted ring and minor piston damage. I replaced the cylinder, piston, rings wrist pin etc. Compression is 125 now but the gaskets that came seemed really cheap and lightweight. Trying to make a leakdown tester today.Why the rebuild in the first place?
Amazon actuallydid you buy one of those cylinder kits off of ebay by any chance?