I have a 1990 7.3 f-350. It will start and run as long as I don't get on it real hard. If you put your foot in it it will fall on it's face and die. After a few minutes it will start back up.
I have changed the injector pump, and the return lines. It's running better than it was, but still dies. I'm ready to burn it.
It's a 1990 f-350 7.3 with an automatic trans.
I'm thinking fuel pump next....

 

sounds like it could be sucking air from somwhere. is it hard to start somethimes? id check supply lines first

 

I have checked them, I'll look a little closer from the tank to the pump. Thanks

 

i would def check into the lift pump. probably dont have the pressure needed at the IP.

 

Thank you Sootman73, I did get a new pump. As soon as I get time I'll put it on. Right now I'm on my way to Amarillo...