Hi. First post here. Hoping someone can help

My car is a 1.2 HTP mk 2 2010 Fabia estate.

There is a leak from the fuel tank which happens when I am filling it. It only leaks when the tank is just about full. Petrol comes out under the car. Looks like it is emerging at the front of the tank. Looses a couple of litres then stops so the source must be quite high up. Some petrol pools in the well for the fuel pump but it’s definitely not leaking through the pump seal. That leaked petrol seems to get there through a small hole which is in the metal panel under the seat about 6 in back from the fuel pump.

Hopefully someone can suggest what the problem. And how easy/difficult a fix it could be. Dropping the tank looks like a right pain…..

Thanks!!

Not sure if or how it might help, but here's an image from an ebay listing for a fuel tank that shows the fairly large array of pipework that may be involved.

I guess the fuel feed from pump to filter and fuel return from filter are obvious, then I think the white one that goes past those and down the front of the tank must be the EVAP breather line from charcoal canister heading for the purge valve in the engine bay, and the two connections on the top appear to go to the filler neck fairly close to the filler flap, part of the tank venting system I suppose.

Edited 14 minutes ago14 min by Breezy_Pete