Where do i start..... Well from the beginning i was on the freeway doing about 120 km/h suddenly lost power, with full acceleration i could only do 80, after a little bit found out i was out of fuel, switched to reserve tank filled up and headed home, once i got home and let the bike cool for a bit, i tried to run it again, it would start but not idle by its self, i took it for a ride like this and the power jerking was worse. i had other things to do on the bike like changing the inside rocker gasket. so once the bike was fully cooled it never started again. There was a video showing no fuel spraying from the carby but idk how to upload, i assumed the jets where blocked so i cleaned it out, reinstalled it but still got the same problem (no fuel spray). could a blown head gasket affect the carby vacuum causing no fuel?. model is a 1988 GPX-250.