GS1455 Posted August 18, 2017 Share Posted August 18, 2017 Sadly some jackass stole my fuel cap at a recent cruise in, while I was looking at other cars. I now am having trouble finding a proper vented cap like the one I had (original) can anyone tell me where I might find a suitable replacement? thank you...Pat Link to comment Share on other sites More sharing options...
JohnD1956 Posted August 18, 2017 Share Posted August 18, 2017 Are you sure it was vented? By that year, many were vented by the back corner of the tank, near the passengers side tire. Link to comment Share on other sites More sharing options...
RivNut Posted August 18, 2017 Share Posted August 18, 2017 http://www.oldbuickparts.com/advanced_search_result.php?keywords=Gas+cap&search_in_description=1&x=0&y=0 1 Link to comment Share on other sites More sharing options...
Beemon Posted August 18, 2017 Share Posted August 18, 2017 Might be time to invest in a locking cap if people are swiping gas caps. That's just really petty, the balls on the guy to do something like that surrounded by people. 2 Link to comment Share on other sites More sharing options...
NTX5467 Posted August 19, 2017 Share Posted August 19, 2017 For vehicles with the tank filler behind the license plate, you have to be careful of how high the cap's top is, lest it end up being the "travel limited" for the license plate to return to its "up" position fully. Once you have a locking cap that fails to unlock, the cost and effort AND expense of getting it removed far outweighs the cost of the fuel (at this time) that might be missing. Especially if you're on the way home from an event and need more than the remaining 1/4 or 1/8th tank of fuel to get there. Your money, your judgment call. NTX5467 1 Link to comment Share on other sites More sharing options...
NTX5467 Posted August 19, 2017 Share Posted August 19, 2017 (edited) FCorrect! Not vented. RockAuto has a large selection of brands, locking and normal. Even ACDelco! Just don't go to a GM dealer to get one! Also fits a hoard of other Buicks, GM cars, Fords, Chryslers, BMW, even the AMX, and other brands! Generally 1965-70 model years. 1971 was the first year for Federal fuel vapor control and those caps have the longer locking tangs tangs on them, plus the "pressure relief" feature. NOT useable on earlier models and still seal correctly, nor can the earlier models be used on a '71 vehicle (locking tanks won't engage in the filler neck). NTX5467 Edited August 20, 2017 by NTX5467 (see edit history) 1 Link to comment Share on other sites More sharing options...
GS1455 Posted August 19, 2017 Author Share Posted August 19, 2017 Thank you everyone, my spare cap (used) is not vented, the tank is not ESC type, it has a vent with a little cotton swab in it, car starves for gas at about 2600 rpm and 55mph is top speed in fourth gear beyond that it backfires and stumbles, this began when I put spare cap on...hope problem is solved with proper cap, stolen cap was marked "vented" I assume it was proper, thank you rivnut, ordered from buickparts, hopefully all will be well again, thank you all again, Pat Link to comment Share on other sites More sharing options...
Brad Conley Posted August 19, 2017 Share Posted August 19, 2017 (edited) Proper cap for a 49 state emission 1970 A-Body is NOT-vented. Edited August 19, 2017 by Brad Conley (see edit history) 1 Link to comment Share on other sites More sharing options...
GS1455 Posted August 26, 2017 Author Share Posted August 26, 2017 Does that include stage 1 cars with the larger fuel pump? This car is a documented stage 1 455 might there be a difference? There is a single vent up top with a wad of cotton in it, no charcoal canister, listings are confusing on this model....cap is under license plate, used to hold plate open, hard to forget, I believe it was the original cap, it was marked 'vented' can't seem to find anything like what I had even buickparts isn't sure on this application. Too bad there are thieving people everywhere or jealous children in adult bodies. Hopefully I will find something that works, thank you, Pat Link to comment Share on other sites More sharing options...
Guest alleyyooper Posted August 29, 2017 Share Posted August 29, 2017 How sure are you that it was an adult and not a kid. Kids are some of the biggest theives of the spring loaded hood oranments off all brand ofcars and Buicks in particular. Al Link to comment Share on other sites More sharing options...
Beemon Posted August 29, 2017 Share Posted August 29, 2017 8 hours ago, alleyyooper said: How sure are you that it was an adult and not a kid. Kids are some of the biggest theives of the spring loaded hood oranments off all brand ofcars and Buicks in particular. Al Maybe 20 years ago? How many kids do you see at car shows, because every time I go I never see today's youth. I'm usually the youngest guy there and I'm 25. And this is of course excluding children. Link to comment Share on other sites More sharing options...
Bob Engle Posted August 29, 2017 Share Posted August 29, 2017 A vented cap with a full tank of gas and under hard acceleration will spill gas out of the vent. My 70 GS had a vented cap and Icould smell gas every time I filled the tank. I changed to a non vent and the problem went away. Bob Engle Link to comment Share on other sites More sharing options...
Guest alleyyooper Posted September 1, 2017 Share Posted September 1, 2017 (edited) Around here there is always a bunch of 12 to 18 year olds at car shows. Some times they are in big groups some times in a small group of 2 or 3 so I am sure dares happen. Al Edited September 1, 2017 by alleyyooper (see edit history) Link to comment Share on other sites More sharing options...
JohnD1956 Posted September 1, 2017 Share Posted September 1, 2017 If that cap is that rare then my bet is it will be some one who knows that, and not just an opportunist. Out of curiosity, might the other big block muscle cars share this vented cap? Link to comment Share on other sites More sharing options...
JohnD1956 Posted September 1, 2017 Share Posted September 1, 2017 BTW...Year one has one for less than 30 bucks. https://www.yearone.com/SearchResults/1964-1965-1966-1967-1968-1969-1970-1971-1972-Buick-Skylark-GS-Parts/Gas cap Link to comment Share on other sites More sharing options...
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