Engine would turn over but not crank ,would not crank had to keep pumping gas peddle when it did crank i had to keep pumping gas pedal to keep cranked ,car would barely move it was spitting and sputtering really bad then it back fired hard and i made it home then it would not crank i replaced the fuel pump and the fuel pump relay switch,it ran for about 30 min. then it would not crank,pulled out relay switch and put it back in and it will crank for 2 or 3 times,then it will turn over but not crank again. *tr