I have a 07 f150 4x4 5.4 and have just recently started having problems fueling up. When the nozzle is in it constantly shuts off when fueling.

 

Have you tried different pumps?

 

Yes, I have tried different pumps but still have the same results.

 

This is weird, but it is not unheard-of that you might find a piece of siphon hose or some other object in your fill tube. There is also a smaller vent tube running with the filler tube, but unless its kinked or something I don't think it could be blocked up. You can see both steel tubes just looking in at the wheel well. Shine a light down the fill tube first to check for anything that doesn't belong there. You can stick your finger in it and feel where the vent ties in right at the top. Maybe you ran over something and it flew off the tire and dented the tank vent. There are tons of possibilities.