Here's a pic of the 2 lines that come into the fuel rails. They also connect to the steel lines coming from the tank down at the frame rail. Down there they are connected via fuel injection hose and injection clamps. It's very possible I had these reversed at that location.


Prior to today, I had the supply line connected to the lower one in the pic that goes directly into the fuel rail. And the return line was connected to the other one. It was connected that way when I got the 35psi pressure reading with the other pump.

After installing the new pump which shows no pressure on the test gauge, I removed the connections down at the frame rail to make sure I had good gas flow and I do. I held my thumb over the test hose and it builds up great pressure to the front of the truck.

As I looked at the fuel rails on the engine I started thinking maybe the fuel needs to go to the upper line in the pic first since that one goes to the fuel pressure regulator. I switched the lines but get the same results, no pressure at the shrader valve. Argh! Thoughts??

oh, here's a pic of the FPR


The engine turns over great. There is fuel to the front of the truck. I have fire to the distributor.