FSIcolinUK

So ive been out "cruisin" come home and park the car in the garage

go in later to hear a dripping and "ploping" in the fuel tank, open the fuel cap and loud hiss as it takes in a load of air, then a creaking from the fuel tank.

Call Audi who tell me it seems as if air is not going into the tank to fill up the empty space and that if there is a total lack of air going into the tank it may crush the tank!

Going to get checked out nxt week

anyone else heard of this before?
Lucky to notice it, it was only as it was quiet in the garage that i noticed it at all!

danham

Assuming from your name that you are not in the US, I don't know what the evaporative control system is (if any) on your car, but this is a classic case of a blocked tank vent.

If you have a charcoal canister, make sure it can get air. Grossly overfilling the tank can saturate the canister and sometimes cause it to be internally blocked.

Check hoses leading to/from the filler pipe for blockage or kinks.

-dan