how many fuel pumps on 01 f250?and where?

[westhall55]

ok i was driving my truck the other day and it is a 2001 psd and when i took off it was driving fine and it started spuddering and running rough and it died out.wouldnt start back up so i went directly to fuel problems. i took off the filter on top of engine and primed the system by turning the key on 4 or 5 times and nothing...no diesel was even trickling out... so i know it has to be the fuel pump,but how many fuel pumps are there and where are they at?does this sound like problem?thanks

[donj1977]

one and its on the driver side inside frame rail infront of tank