Now I will point out the flow chart of the fuel lines. I am using a screwdriver as a pointer. Look at where the tip of the screwdriver is touching.
The first pic shows the lines that come from the fuel tank and returning to the fuel tank.
In this pic you will see the screwdriver pointing to the fuel return line back to the fuel tank. Follow it up a little and you will see where it connects to a short rubber hose. That is where the passenger side cylinder sends fuel back to the tank.
Notice to the left of the screwdriver handle, you see a tee fitting where the two fuel return lines that come from the heads (one from each side) and meet.
This photo shows the return line from the driver's side of the engine to the tank. Follow the line up and to the left. You will see where it connects to the cylinder head.
This pic shows that the screwdriver tip is pointing to the line that comes from the fuel pump (lifter pump) that I just replaced. It goes to the fuel filter and then goes to a 12 volt valve attached to the injector pump.
The 12 volt valve shuts fuel feed to the injector pump when you turn the ignition key off.
Here is that valve.