stall when hott?

[patrick112390]

i have an 82' yamaha xt200j and when it gets hott it will stall and not start again...it also has a violent kickback upon starting...what could that be?

 

[dirt bike dave]

Check your valve clearances. Your valves are almost certainly too tight. Basically, when everything heats up, your vavles are not closing all the way. No closing = no compression, and possible kick back.

 

[patrick112390]

Check your valve clearances. Your valves are almost certainly too tight. Basically, when everything heats up, your vavles are not closing all the way. No closing = no compression, and possible kick back.

so what kind of tool will i need to get to fix that? (the engine is in pieces right bow fyi and theres a ton of carbon on the valves and piston)