[SFfiredog]

Before you do any replacing of parts check the venting system on your fuel tank. An improperly sized or restricted (clogged) vent tube will cause the the problem you described. As the fuel is expelled from the tank the area must be replace with atmosphere. If the atmosphere inside your fuel tank overcomes the fuel pump's ability to pull fuel from the tank, the tank will actually suck the fuel back through the fuel line. This problem is more apparent with an engine mounted mechanical fuel pump because the fuel must travel the lenght of the fuel line before it is pressurized. Try a simple test. Drive your car with the fuel cap open. Be careful, of course. I had a drastic example of this condition happen when I was a Ford dealership mechanic. A Festiva came in the shop that wouldn't run. It sounded like it was out of fuel. The fuel gauge read full and fuel ran out the filler neck when we tried to put gas in it. I decided to look under the car and was shocked to find the fuel tank was crushed like an aluminum can. I thought is was road damage but during diagnosis we found that the evaporative control vent line had collapsed and the resulting vacuum had sucked the fuel tank closed like a straw in a plastic bag.
HTH,
Mike