It is far more likely that you have a fuel delivery problem than a fuel pump problem. What is the condition of the fuel tank? Is it original? It is very common for debris to accumulate in the bottom of an old tank blocking the end of the down pipe in the tank.
I would loosen the fuel line fitting at the bottom end of the down pipe of the tank, don't remove it, just crack it loose to see if some fuel leaks out.
Old tank was really bad, no free flowing fuel at all. New tank is in but not hooked up yet (waiting for fuel line parts).
So for now I have a fuel line funnel suspended in the air that is hooked directly to the fuel pump. Hoping that is ok, but maybe this is my issue. I'm attempting to always have clean fuel running through the engine to eliminate fuel as a potential problem.
