OK, I just got finished changin the flywheel, everything is back together, everything has enough oil, fluids etc. But when I start it, the motor revs up to like 4000. I checked to see if maybe there were any loose wires or hoses, but didnt see any. Anyone have any idea whats up. Also there is a faint smell, but no smoke or anything. Cant really tell wht the smell is. Thanks