thanks for the replies. I am using 1/2 allum tubing from tank to pump. The pump is mounted low. inlet below bottom of fuel tank. Cobra Bill not sure how to do the fuel return??? The pump has 1 inlet and 1 outlet. I have tried a new regulater and taking it completely out. When the fuel pressure is low the pump sounds like it has gravel in it...When the pressure is 6.5 it sounds normal. I don't have a spacer do to hood clearance...There is no evidence of the fuel boiling in the carb. My carb has the fuel level sight gage. The fuel line is not close to the exhaust. I just drove it with fuel cap of with no help. I have verified my tank vent is clear.
Thanks for any help. Bermblaster