Fuel Bowl empties when stops!

I wouldn't think all of the fuel would be evaporating completely. Not just overnight. My guess is the fuel pump is bad and somehow allowing fuel to gravity feed back into the fuel supply line. Pull the dipstick and see if it smells strongly of fuel. If it does, the diaphragm in the pump is letting fuel run into the oil pan. Put a fuel pump on it If not, when you park it to let it sit overnight again, take a pair of vise grips and gently pinch the fuel supply hose from the tank to the pump closed. But make sure it is closed completely. If it starts the next morning, then the fuel pump is allowing fuel to run back into the supply line. Put a fuel pump on it.