First Generation Firebird-L Mailing List ......................................................................... I think that all Firebirds up to 69 had some kind of open-air ventilation at the filler neck area (not sure about the California models though).
My 69 came with a non-vented cap, but instead it had a small vent tube attached to the filler neck which exited behind the bumper. If there are no other provisions for equalizing the pressure in the tank, I would assume a vented cap would be the right choice. >From the early 70s,the emissions laws made it mandatory to have a closed system for recirculating the gas fumes to the engine via a charcoal filter, which meant no more vented caps. Howevever, there will always be some pressure-buildup in the tank, just like the rediator cap it will take a certain pressure before it releases the air. Den 08-01-03 16.47 skrev "Ironranger51-Lee J" <[EMAIL PROTECTED]> följande: > First Generation Firebird-L Mailing List > ......................................................................... > I've been following the posts on the locking gas cap > and couldn't help but notice the comments on "vented" > vs "non-vented" caps. > > I have a regular non-locking cap on my 68 400. I > think its non-vented because every time I go to fill > up there is a sudden release of air (gas)pressure when > I open it up. Not to ask a "dumb question", but what > type of cap is preferable and what are the issues > between "vented" vs. "non-vented"? > > Lee Johnson > 68 Coupe > > > > > ______________________________________________________________________________ > ______ > Be a better friend, newshound, and > know-it-all with Yahoo! Mobile. Try it now. > http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ > > > > ------------------------------------------------------------------------ > Submissions to Firebird-L: <[email protected]> > Unsubscribe from Firebird-L: <[EMAIL PROTECTED]> > Help: <http://FirstGenFirebird.org/firebird/Firebird-L.html> > > Classifieds: <http://FirstGenFirebird.org/ubb/> > Owner Pictures: <http://FirstGenFirebird.org/show/> > > Donations: <http://FirstGenFirebird.org/store/cart.mv?999999> > FGF Merchandise: <http://FirstGenFirebird.org/store> > ------------------------------------------------------------------------ Submissions to Firebird-L: <[email protected]> Unsubscribe from Firebird-L: <[EMAIL PROTECTED]> Help: <http://FirstGenFirebird.org/firebird/Firebird-L.html> Classifieds: <http://FirstGenFirebird.org/ubb/> Owner Pictures: <http://FirstGenFirebird.org/show/> Donations: <http://FirstGenFirebird.org/store/cart.mv?999999> FGF Merchandise: <http://FirstGenFirebird.org/store>
