Engine dies after revving at 2000 rpm for 20/30 sec?

[Ed O'Donnell]

95 f-250 7.3 219,000
Engine idles a little rought but after 20/30 sec of revving at 2000 rpm the engine will die. It takes about 5 to 6 cranks for it to start back. But when the engine is dying out u can give it more fuel and it will revv up but will eventually die.
I have replace fuel pump, cleaned fuel bowl and the pice on the side of the bowl, replaced all the rubber lines and changed IDM with a friends. Any thoughts?

[Patrick Feeley]

Have you tried monitoring the fuel pressure at the shrader valve on the fuel pressure regulator (driver's side of the fuel bowl) while this is going on? Use a 0-100 liquid-filled gauge if you can get one. Does it do it on either fuel tank? Cheers!

[Ed O'Donnell]

Have not checked the fuel pressure. What psi should i have? Yes it does it with both tanks.

[Patrick Feeley]

It should be at least 40 psi with it running. You are looking to see if the pressure drops off as you're running while revving for the extended period. It is a two-stage fuel pump and can have the high side fail (my 94 would sit and idle, but die under load similar to yours). Cheers!

[Ed O'Donnell]

ok so am i checking to see if the fuel pump is bad or the fuel pressure regulator? cause i have replace the fuel pump