2016 Superb Sportline TSI 280.

 

On two occasions recently, I've found petrol dripping out of the drain pipe and puddling near the rear wheel.
On both occasions, the car had been in direct sunshine on a hot day on a slight forwards incline.
The first time, the tank was 3/4 full (and the second time it was just over 1/2 full.

When I opened the filler cap, there was a gush of fuel followed by gurgling from the tank and drawing back of the brimming fuel followed by more gurgling and belching.
I'm guessing that there is a problem with venting but don't know what to check before parting with money for a mechanic to take a look.

It's a common problem with 280/272 models unfortunately.

Being AWD, the fuel tank is "split in two", which in turn doesn't vent properly, causing this issue.

Do you know if this is "fixable" or do I just have to live with it?

I had this problem. It was a valve in the engine bay that had stuck open. Quite cheap and easy to replace. However I suspect your charcoal canister will be “poisoned” by too much petrol. That will need replacing too. Not expensive, just a bit of a pain removing the rear rh wheel arch to get to it.

1 minute ago, nicknorman said:

I had this problem. It was a valve in the engine bay that had stuck open. Quite cheap and easy to replace. However I suspect your charcoal canister will be “poisoned” by too much petrol. That will need replacing too. Not expensive, just a bit of a pain removing the rear rh wheel arch to get to it.

Thanks Nick.

See the posts around this one for details.

 

 

Does anyone know how / where to obtain a new activated charcoal filter canister?
None of my Google searches come up with one for the MK3 Superb.

Alternatively, if it is the case that the filter is saturated with petrol, is there a way to refurbish it?

Skoda dealership parts dept.

Surprisingly, not vastly expensive, probably part number 3Q0201801D, £46.42 + VAT, but they'll get it right with your reg number or VIN.

16 hours ago, Breezy_Pete said:

Skoda dealership parts dept.

Surprisingly, not vastly expensive, probably part number 3Q0201801D, £46.42 + VAT, but they'll get it right with your reg number or VIN.

Cheers.