Messed up and didn't mark my fuel lines well enough when doing service. No idea which connects to the "IN" (left nipple) of the tank and which to the "out" (right) nipple. The parts diagram shows a line with an arrow toward tank, but does not specify if that's out to tank or in to tank. Hoses aren't marked. Service manual I have has, nada. One hose connects to a normal "T" that sits on the right side of the engine. The other hose connects to a corner shaped T that sits on the left side of the engine. The 2 T's interconnect to each other. Can I trouble someone who knows theirs are right to trace the one to the right easier to see T?
This screenshot from the manual should help, although I'm not sure that it would make much difference. The pressure regulator is in the tank and the fuel line is simply a loop that the injectors tee off, all at the same pressure.