I was driving the other day and my truck shut off. Then I tryed to start it and it seemed locked up but I tried again and it just cranked. So I smelt fuel figured it was a stuck injector. Pull off the upper manifold and there was a pint of fuel that poured out. The oil smells like fuel. Any suggestions what it could be?? I'm thinking a injector but would there be that much fuel in the manifold like that??