Charcoal canister missing
Thread Starter
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
Charcoal canister missing
Hi, all,
My 'vette is missing that charcoal filled thingamajig that the gas tank is vented into, I forget what it's called......evaporative emissions canister, or some such.....anyway, I just plain don't have one. The gas tank vent line is still there, but it's blocked off with a rubber cap. I noticed this when I started doing a little digging around because when I take the gas cap off to gas up, a lot of pressure is released. None of my other cars have done this, so I found it a bit odd, and sure enough, I figured out why. Now, my question is, do I really need a new canister for this vent line to go into? I don't want to vent gasoline fumes directly into the atmosphere, especially under the hood, where the slightest little spark could cause it to ignite. Would it be possible to run the vent line into the fuel bowl vent, or something like that? I'm not holding out a lot of hope for anything like that, I'm pretty sure I'm gonna have to spring for a new cannister, but hey, ya never know till ya ask. Thanks,
Scott
My 'vette is missing that charcoal filled thingamajig that the gas tank is vented into, I forget what it's called......evaporative emissions canister, or some such.....anyway, I just plain don't have one. The gas tank vent line is still there, but it's blocked off with a rubber cap. I noticed this when I started doing a little digging around because when I take the gas cap off to gas up, a lot of pressure is released. None of my other cars have done this, so I found it a bit odd, and sure enough, I figured out why. Now, my question is, do I really need a new canister for this vent line to go into? I don't want to vent gasoline fumes directly into the atmosphere, especially under the hood, where the slightest little spark could cause it to ignite. Would it be possible to run the vent line into the fuel bowl vent, or something like that? I'm not holding out a lot of hope for anything like that, I'm pretty sure I'm gonna have to spring for a new cannister, but hey, ya never know till ya ask. Thanks,
Scott
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
Your easiest solution is to buy a vented gas cap and go on your merry way. But, that depends on how "green" you want to be and how serious the emissions police are in your neck-of-the-woods. Lots of vintage cars have vented gas caps. Yours did not come with one, but finding and replacing the cannister and plumbing on yours would be costly and troublesome. It can be done if necessary (swap meets are the best source for them...at reasonable prices, anyway).
Le Mans Master
Joined: Mar 2001
Posts: 6,640
Likes: 287
From: Ann Arbor Michigan
What year? (it helps if you fill out your profile). Note that the carb is vented back to the carbon canister as well. W/O the canister you may get vapors coming from the carb too. If it were me, I'd put the canister back on.
Gary
Gary
Thread Starter
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
It's a 1980, and yes, the hard line that comes from the tank on the driver's side is still there. It has been blocked off with a rubber cap, like the ones ya use to cover up unused ports on a carburator.
Scott
Scott
Melting Slicks
Joined: Jan 2003
Posts: 2,714
Likes: 32
From: Shreveport LA
LA Events Coordinator
I, too, don't have a charcoal canister on my '75, been using a vented locking cap I got at Advance Auto parts for about 6 years....no problems whatsoever. No gas smell in my garage, no pressure when I fill up......
Thread Starter
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
Hmmmm,
OK, I guess Ill give the vented gas cap a try.....Oh, hey, this doesn't have anything to do with anything, but what the heck are those tiny little stars under everybody's name? I have two blue stars, no idea why.
Scott
OK, I guess Ill give the vented gas cap a try.....Oh, hey, this doesn't have anything to do with anything, but what the heck are those tiny little stars under everybody's name? I have two blue stars, no idea why.
Scott
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
Those little stars are based on the number of posts you have on the forum. I have to many that is why all the stars under my name. Holy stars Batman I just looked and have over 13,000 posts. Been here almost 10 years now.
Thread Starter
Le Mans Master
Joined: Mar 2008
Posts: 5,948
Likes: 72
From: Oxford MA-----You just lost the game!!!!
OK, went to an auto parts store (Advance is the one I like to use around here) they didn't have any vented gas caps, so I ordered a canister for 54 bux. So, now I'll be able to vent my gas tank, and the fuel bowl, too. (fuel bowl vent on Quadrajet is blocked with rubber cap right now) They didn't have the bracket that holds it to the frame, tho. Do I need the special bracket, and where is a good place to look for a used one, or can I just use a hose clamp or something?
Scott
Scott
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
It is a little sturdier metal part than a hose clamp. It has two bands around it with a metal piece joining them and that piece with a right angle bend. That 'bent' surface is where the bracket is bolted/screwed to the inside-rear of the left/front fender well. The correct bracket would be best, but you could rig up some aluminum strapping that would get the job done as well.
Le Mans Master
Joined: Mar 2001
Posts: 6,640
Likes: 287
From: Ann Arbor Michigan
eBay is your only hope for the bracket.
Here's one for a 77.
http://cgi.ebay.com/ebaymotors/Chevy...item5ad2f1a831
Here's an 80' Not cheap.
http://cgi.ebay.com/ebaymotors/1980-...item29efb30097
Here's one for a 77.
http://cgi.ebay.com/ebaymotors/Chevy...item5ad2f1a831
Here's an 80' Not cheap.
http://cgi.ebay.com/ebaymotors/1980-...item29efb30097
