Cant fill gas tanks
I bought a 1990 F-150(5.0, 5spd, 4wd, dual tanks) a couple of months ago. The night I picked it up I stopped at a gas station to fill the tanks. The front would not take any gas. It would take a couple cents worth then the pump would shut off. The gas guage was showing only 1/4 tank. I tried only holding the pump handle down a little bit to slow the flow, only put the pump nozzle in a little bit, hold it at different angles, none of that worked. So to be on the safe side I put gas in the rear tank, no issues. Of course when I switch to the rear tank the gas guage doesnt work at all. Anyhow, I kept running the front tank until the truck started to die to be sure it was almost empty. I went back to a gas station and it still wouldnt take any gas. So I've been running the rear tank. No issues except I dont know how much gas I have. I ran the rear tank for about 150 miles and went to the gas station to top off... Now the back wont take any gas either. I removed the filler hose between the bed and fuel tank on the front tank to check for obstructions.. there were none. It has locking gas caps so I dont think anyone shoved something in my tanks. Im at a loss as to what the problem may be.... Any suggestions?