There is a plastic tank (shroud) holding a quart of fuel in the center bottom of the gas tank. It is filled from the big tank two ways- one, over the top if the gas tank is 3/4 or so full, two, at the bottom by gas returning from the FIP or gas entering from the tank around the 10 mm pipe FIP return line(12 mm square hole with the 10 mm pipe in it). If that space is filled with gunk or tank sealer, no gas in!
Try filling the tank above the one quart shroud level or pouring a quart of gas in the level sender hole into the one quart shroud.
Running the electric fuel pump without gas(lubrication) is not good.