ItÆll crank and start but quickly dies. And yes, it sounds like all hell is breaking loose. Loud banging in the motor somewhere. As far as the belt, it was all done last winter so IÆm not sure how long it would take for it to finally take a crap on me if the timing was off. Granted, the truck was down about 2 months this summer bc of the whole problem with the spark plugs.