Ihave to crank the engine several times before the fuel pump puts out enough pressure to run right. some times it willhave enough fuel to idle roughly for ashort time, then the pump makes a popping sound an then the engine runs fine. this is a 1 year old oem pump.
Fuel pump not working properly on start up on 1992 Jeep Wrangler
Sounds like debris got into the pump, thats why its important to change the in tank filter every time you change the pump.