I have a '34 Ford pickup with a 327, mild Comp cam, Edelbrock Performer intake and an Edelbrock 1406 carb. It is plumbed with 3/8 steel tubing from the tank up with a Holley "red" pump mounted below tank level. It is wired on a relay with 10 ga wire. PSI is 7. My problem is that after a short time the pressure gauges shows 0. The truck still runs OK but I'm afraid of lean out problems. The tank is clean. The scenario is almost the same as a recent Hot Rod Magazine article where a guy had an old Mr Gasket pump die and replaced it with a new Carter generic pump then his problems started. I had the same pumps. Same situation. Can anyone help?