Im new here, and im an avid kawasaki KX250 rider... I ended buying a 2005 yamaha blaster from a guy for 900 bucks for my girlfriend for christmas, the guy told me that the self mixer had stopped working and he blew the motor. He had it rebuilt and bored 30 over, new reeds, .360 jet and so on. the thing ran fantastic up until yesterday, I took it out to a local motox track and put a few laps on it, it was running great as usual and then lost traction in a very slick, muddy spot on the track and i believe it over revved due to me wearing my steel toe work boots instead of my riding boots and i couldnt feel the shifter. it began knocking very slightly and ended up sputtering very badly and then shut itself off. Piston and rod are definitely still intact, it just wont start at all. its getting spark and fuel. While kicking i can hear what sounds to be air leaking out, and im sure its a head gasket. what i want to know is if a blown head gasket/jug gasket can keep these things from running? I would imagine they could if its pulling air in from outside instead of the carb, preventing fuel from entering the combustion chamber and firing. Any and all help will be greatly appreciated!!! TIA!
