Since I had my Mark I always had a problem to top up fuel.
The fuel boiled up the filler hose and I had to stop and wait until the foam goes away - takes always a long time to fill the tank. Today I found some time to check the fuel and vent lines.
The vent lines and also the "T" were new so I took a closer lock to the filler hose - also new and no wrinkels so I started to squeeze the filler hose with my fingers and at the 90° bend I could feel some resistance. Felt like a towel or similar inside the hose.
Got a long reach claw and went fishing in the filler tube.

Look what I have found......lots of kitchen paper......think the PO used it to close the filler during some repairs.
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