If you all look at the fill tube that runs to the tank,
you will notice how small it is.
Almost the same size as the nozzle on the pump, so if the fuel isnt going into the tank, it backs up and shuts off the pump. I have the same problem once in a while.
Big pain when you need to fill up an empty tank.
Click! Click !...... Click!
The best way I found was to not open the nozzle full blast
Good Luck !