When facing up on a steep hill if you don't have at least a half tank of fuel, you might be the lift pump is sucking air.
If that cheap pump don't run when cranking, get rid of it.
The electric pump is handy when changing the fuel filter or otherwise testing for fuel at the filter. I can turn the key and go check it myself. I suppose I could add a manual switch to force it on when cranking.
I have about 3/4 of a tank right now, so I can probably rule out air intrusion into the fuel line from within the tank.