I just got my truck back from the mechanic it ran fine for a couple of days but now it will stall on short trips and is hard to get started again. I can get it started but takes a lot of cranking. It will run ok for a little while but stalls again if I let off the fuel. I did hear a sound that sounded like a large amount of air when I was trying to crank it by jumping the relay for the started. Is this normal? Is it the fuel pump or could it be air intrusion? Please help......Thanks. And yes I will be calling the mechanic.

 

Why was it in the shop in the first place?

Miles on it?

When it happens again, look in to fuel filter...is it dry?

Roy

 

Allway's check the fuel supply hose, right were it goes into the pump, ford put that crazy angle on them and it's in a tough spot, they rot out and split then it sucks air and no amount of priming can fix it. Take a long nozzle blow gun and wrap some wet rags around it and blow into the fuel tank and leaks on the supply side will show up with a puddle of diesel, make sure you sponge that up and put it back into the tank, 4 bucks a gallon, I dont waste a drop.
you need just slight pressure 5-6psi have a friend check around the fuel lines and listen, you'll know when you found it, my 86 had 475,000 and when I sold it to my niehbor that was the original pump, did that hose twice but could not kill that pump.