yfz wont stay running

[crablaster]

I have a 05 yfz went to race did one lap in practice and it dies I let it sit and it started for a few minutes the stopped and wouldn't start then did the same thing hrs later I can't find anything wrong any help would be appreciated

[gasguzzler]

Make sure your petcock is turned on and the gas cap can breath properly. I've seen the metal stub tops on vents cause problems before.

[jjyfz]

ive seen a coil do this before to. when it gets hot it looses spark