Pumping Gas on 2000 Lincoln LS

A couple of years ago, my Lincoln would stop accepting gasoline from the pump requiring lengthy fill up times. It would take a gallon or so and then the pump would stop. Why is this and what can be done?

Asked by for the 2000 Lincoln LS
There is a vent for the fuel tank system that if plugged, will cause this issue. Have it checked, I bet it's got something blocking it.
Thank you so much, bretb...I'll have that checked!!!
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what would a cooling system diagnosis consist of?Im not mechanically inclined at all so please work with me