I am restoreing a 69 charger with 318 in it has 2 barrel carb if the car sits more then 2 days just turns over and does not get gas to carb then I need to prime the carb with gas to get it to start again runs good after that it has a new carb,fuel pump ,tank,and sending unit all factory parts

 

You have a shop manual?

I'd be checking the fuel supply end- to end, from the pickup in the tank, the rubber connector hoses, and the possibility of rust holes in the supply tube.

The shop manual tells how to test the pump for good pressure, suction, as well as "some idea" of volume.

Be sure the tank is vented. If you have subbed parts to restore the car, it might not be, or bugs, wasps, etc, may have plugged the vent.

Gas "boil off" on shut down seems to be a common complaint nowadays, with various forms of alcoholized gas.

 

thanks I will check that out had to put this car together from just parts before I hooked up the tank it ran off a bottle a fire up every time it started doing this after I hooked up the from the tank the vent is hooked up and vents and the sending unit is new and I blew out the lines