after a clutch replace motor ran for about an hour then hurd a big thunk like something fell of then motor died. i tried cranking and nothing happened after i got towed home i looked at the whole engine there was nothing missing that i could tell. every sensor was plugged in. i recently looked at the belt and felt it was lose and i could turn a tensner pully by hand without moving the belt. when i try to crank there is no sound not even from the starter cranking. i can still move the crank but i have to try again cuz i might have been on the exhaust stroke where the piston stops to turn around. but if anyone can give me input on what they think is wrong or if they need more info on it let me know i need to get this car fixed so my parents can have a car.