Fuel filler gas release

[lledwoc]

Has anyone found that when you open the fuel filler cap there is a rush of ‘gas’ (not in the American sense). Almost like opening a pop bottle.

Had my S3 over a year and only noticed in the last month or so. It’s everytime I refuel

 

[Rolly12]

Has anyone found that when you open the fuel filler cap there is a rush of ‘gas’ (not in the American sense). Almost like opening a pop bottle.

Had my S3 over a year and only noticed in the last month or so. It’s everytime I refuel

Happened since day 1


Sent from my iPhone using Tapatalk

 

[cuke2u]

Hotter weather?

 

[lledwoc]

Hotter weather?

Perhaps, although cars are tested over 40c so not sure if an issue with evap system, not sure vapours should be released from fuel tank

 

[Chris43]

Is the rush of air in or out?

 

[Rolly12]

I’d say mines was air in, as if there was a vacuum


Sent from my iPhone using Tapatalk

 

[Leevr]

I've had it on a few cars this one included. Don't think it's anything to worry about.

 

[Leevr]

Is the rush of air in or out?

Light a match and see if it sucks it in or blows it out.

THIS IS A JOKE. PLEASE DO NOT DO THIS!

 

[Rolly12]

Light a match and see if it sucks it in or blows it out.

THIS IS A JOKE. PLEASE DO NOT DO THIS!

Sent from my iPhone using Tapatalk

 

[Ron240]

Quite normal with all cars.
Happens much more often when fuel is low in the tank.

 

[Chris43]

Light a match and see if it sucks it in or blows it out.

THIS IS A JOKE. PLEASE DO NOT DO THIS!

#DarwinAwards

Don't think mine (A3) sucks or blows....

 

[testcard]

Surely there’s a breather valve to equalise pressure as fuel is removed from the tank?

 

[Supa Koopa]

Not sure, but mine has also only started to do this recently. I've also lately been hearing a gurgling from the tank and this stops when you release the pressure. I'd definitely say it's gas out as there is a strong whiff of petrol when it does it.

 

[ChrisB80]

Perfectly normal, mine does it every time I fill up. Nothing to worry about