i was going to ride today pull it out of my garage give it a kick fires up then stalls i try to restart acts like spark plug is not hooked up. my friend thinks the head gasket is blown anyother ideas? it has gas, key is in on, the plug is hooked up and clean, the wires are hooked up. let me know plz. oh and near the head gasket u can see a little bit of carbon near the gasket.