Quote:
Originally Posted by Retroman1969
I've had this problem several times. There is a valve on the fill tube that is activated when you insert the pump nozzle that vents the tank while filling. This is the likely culprit, however I fixed the problem on one of my Boxsters by replacing the old worn gas cap with a new one.
A temporary solution is to locate a plastic tab on the edge of the gas filler and push it in with your key or similar object while you're filling. It manually activates the tank vent.
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Retroman, I think I located (at home, not at a gas station) that little tab to the right edge of the gas filler and pushed it in - which made a thin rod extend about 1" from the far left into the gas fill compartment. I'd never noticed that before. Does that have something to do with the venting? I can slide that rod in and out with my fingers, now that I know it's there. Weird.