I have a 91 E350 and I'm not getting any fuel

full tank of gas and the battery is fully charged So now what is your best guess as to why I'm not getting any fuel

got fuel and battery is good

How do you know it's not getting gas? Have you checked the rollover switch? I think it's usually near the front passenger's feet, and sometimes behind a removable panel. Next thing would be the fuel pump; you should hear it run for a few seconds when the ignition is turned on. You might want to get down near the gas tank to listen, and have someone else turn the ignition on & off. it should run for about 3 seconds when the ignition is turned on. Good luck...