Just got 1988 F350 7.3 idi it has sat for years cleaned the tanks back tank is out of it we have the sending unit tied up out of the way and capped off. The front tank was cleaned completely cleaned out and put back in replaced all glow plugs, the relay and the control, new injector kit, new starter, new batteries, lift pump, water pump, and new fuel filter. It still doest wanna start have to crank and crank if it does start it only runs for a bit and dies! It started off fine then as I was driving it the fuel filter light would come on and it would act like it didnt have the fuel to go, then it would shake and then jump back up. I looked at the filter didnt see anything still replaced it, it did it again and i was told to get rid of the bottom cap (the water separator) did that got a normal filter with the valve on the bottom. I have bleed the lines all they do is bubble! next step i think is to replace all lines if that doest work new pump too unless someone could point me in the right direction PLEASE I am going nuts!!