88 pioneer 4.0l 4x4
I searched and found the service manual for the fuel system but didn't help.
I finally got the sending unit working, tank installed, lines run, and pump wires connected (found a couple burn/cooked wires in the cab leading to the pump fuel). I get fuel up to the regulator but no further... The line is clear, fuel lows easily, and is pressurized. I assumed the FPR was stuck shut so I bought another one. Same result with new FPR. Outside of the vacuum line is there any other reason the why fuel would not pass through? Maybe issues with the vacuum ball? Any suggestions would be much appreciated.