This is getting real old. I thought the fuel pump was bad. Changed out the Precision Pump for a nice Carter M6903. Still when the car has sat for a long time the pump is not getting fuel to the carb while trying to start it. Only after the car fires after the carb is primed does the pump have enough pressure to get the fuel to the carb. Car is freshly restored except for the fuel sending unit.

Could it be the fuel vapor canister? This is new

Bad fuel sending unit? I did not replace this when I restored the car.

Thanks

Lawrence