I don't know what situation you're talking about, tanking up before storing a vehicle? You can always bounce the car on the suspension (I can't in my OP situation because the car is on jack stands), but most fuel injected vehicles, I believe, if you turn the key to the run position the electric fuel pump will turn on and pump the gas through the fuel rail and back to the tank...or maybe it will just pump it until it comes up to pressure, I haven't really noticed a fuel pump running in a long time now that I think of it.
I haven't done anything with my car yet, and I don't think I can use that "run" trick because I have pushbutton start.