My 96 Indy Ram was doing the same thing. Try turning the key on and let the fuel pump prime first,if it starts right up,then the pump is weak. I parked mine after work one day a few months back and it wouldn't start. So I poured some fuel in the throttle body,and the the truck started right up. The fuel pump failed. I put a new pump in,and now the truck starts right up in about a half of crank.