2007 dodge ram 2500 5.7 L v8 tries to start but shuts down after a few seconds. We banged on the gas tank and it started. Drove up a hill and its engine turned off. Tried this again with no results.
The truck tries to start every time we turn the ignition and we have tried banging on its gas tank many times, but it won't fully start. Could this be the alternator or the starter or the fuel pump?