Spatt Posted December 9, 2013 Share Posted December 9, 2013 Every time I fill up. when I open the fuel filler cap I get a hiss from the tank. I assume this is normal? Wanted to check Quote Link to comment Share on other sites More sharing options...
Ekona Posted December 9, 2013 Share Posted December 9, 2013 Perfectly normal. Quote Link to comment Share on other sites More sharing options...
Lexx Posted December 9, 2013 Share Posted December 9, 2013 As Dan says, perfectly normal. Every car in my household does that. Quote Link to comment Share on other sites More sharing options...
SkylineV35 Posted December 9, 2013 Share Posted December 9, 2013 lol glad thats cleared up! mine hisses like somethins gonna blow Quote Link to comment Share on other sites More sharing options...
Spatt Posted December 9, 2013 Author Share Posted December 9, 2013 Cheers guys Quote Link to comment Share on other sites More sharing options...
richmillions Posted December 9, 2013 Share Posted December 9, 2013 Mine does it and other cars have also. Anyone know why the pressure build up? Quote Link to comment Share on other sites More sharing options...
ilogikal1 Posted December 9, 2013 Share Posted December 9, 2013 It's to reduce fuel vapour emissions (along with carbon canisters). Most vehicles now run the tank at a negative pressure stop fuel vapour venting to atmosphere since the regulations were changed in 1998 (ish... I think). 2 Quote Link to comment Share on other sites More sharing options...
richmillions Posted December 9, 2013 Share Posted December 9, 2013 It's to reduce fuel vapour emissions (along with carbon canisters). Most vehicles now run the tank at a negative pressure stop fuel vapour venting to atmosphere since the regulations were changed in 1998 (ish... I think). Every day is a school day Quote Link to comment Share on other sites More sharing options...
Dblock Posted December 9, 2013 Share Posted December 9, 2013 It's to reduce fuel vapour emissions (along with carbon canisters). Most vehicles now run the tank at a negative pressure stop fuel vapour venting to atmosphere since the regulations were changed in 1998 (ish... I think). Good knowledge Quote Link to comment Share on other sites More sharing options...
Stutopia Posted December 10, 2013 Share Posted December 10, 2013 It's to reduce fuel vapour emissions (along with carbon canisters). Most vehicles now run the tank at a negative pressure stop fuel vapour venting to atmosphere since the regulations were changed in 1998 (ish... I think). That's interesting. I'd always just assumed it was because 70 odd litres of fuel had been sucked up and there's no air getting in to replace the liquid, until you open the filler cap that is, and it rushes in. Top post Quote Link to comment Share on other sites More sharing options...
ilogikal1 Posted December 10, 2013 Share Posted December 10, 2013 Yay, I contributed something useful for a change. Normal service will now be resumed. 2 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.