Fuel cap hiss!!

Hi, should there be a 'hiss' every time you open fuel cap??

Had some issues with fuel smell and recently Joe replaced whole tank as suspected a leak somewhere!! This got rid of fuel smell and 'hiss' came back but recently it's gone again!!! What's going on? Is it the hot weather?

Yup, that's normal, particularly in warmer weather when the vapour in the tank expands in the heat.

Twas one of my favourite sounds when I had the Coop, opening up the filler car in a station forecourt. Sounded like you were opening up Mr.Fusion to feed power to the Flux Capacitor.

Lol well described daithi28. That hiss is one of the best noises the coupe makes.

It certainly attracts attention.
Not as much as a the dump valve going off though.

It's the smell I like best. Mmm Petrol

I call it the Money hiss!

That's what I thought!

If it doesn't hiss does that mean I've got a leak? There's no petrol smell so any ideas?

If your hiss has gone, it might be the seal in the petrol cap.

Lol

I've got "another" Italian car that hisses like a nasty snake after any drive-

I've taken to releasing the fuel filler after even small drives and can hear the fuel tank go "creak" as it lets the pressure out!

never had it on the 20V yet though!