Hi,
For fuel to enter the tank, air has to escape. If it can't, what you described happens.
If you take a look below, I attached a pic of the filler tube. On the side of the filler is a vent. The small hose that attaches towards the top of the filler tube allows air to exit the tank when refueling. Check to make sure the hose hasn't been obstructed.
Let me know what you find.
Joe
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Sunday, October 18th, 2020 AT 8:52 PM