i have a 2002 audi a4 b6 1.8t, 5 speed, and just as the winter was coming to an end i stopped being able to fill my tank, sometimes less thank a half gallon before shutting off the pump, ive disconnected my ldp and my charcoal cannister so i know its not my evap system, i tried checking for a blockage by putting a vacuum line down the tube it went into the gas tank and came out drenched in gas. i like to think of myself as a good problem solver but this one has me stumped. i dont know what my next step should be short of adding another vent line to the tank, also no codes aside from the very small evap leak code. im thoroughly stumped any help would be appreciated. the problem is starting to damage my paint from pulling out the pump and putting it back in.

 

i dont know much about the system but since the tank is somehow getting pressurized while refueling would that have anything to do with a gravity valve or transfer pump?

 

update:went to fill up today first trigger pull .2 gal. second pul .1 gal, third pull went to 13 gallons, and i didnt change anything