Blocked drain

[Marcin Z]

Hello,

There is a drain located below the fuel cap. It is visible when you open fuel flap and is just at the bottom of the rubber collar that sits kind of under/around fuel filling "pipe". Mine is blocked and water is collecting in the space under the fuel flap. Does anybody know where this drain comes out under the car? I have tried pushing a flexible wire through it from the top to unblock it, but was not very successful although I was able to push quite a bit of the wire through. I thought I could maybe tackle it from the bottom end if anybody knows where it comes out.  

[cliffcoggin]

Perhaps try sucking from the top end.

[Marcin Z]

On 4/5/2025 at 9:10 PM, cliffcoggin said:

Perhaps try sucking from the top end.

I don't have anything to suck it with. I think I'll just keep trying to push the wire through from the top and see how it goes. 

I was also thinking if I could try and blow some compressed air through it, but not sure if this could cause any damage or not.

[Magnet]

Compressed air at around 30psi should sort it. 
Kind regards,

Gareth.

[cliffcoggin]

Yes, I favour compressed air over wire. If the drain tube is plastic it could be pierced by wire at a bend.

[Marcin Z]

Thank you for your replies and suggestions. In the end a lot more persistence and a different flexible wire has sorted out the issue.