Charcoal canister hose

Reply Subscribe

Thread Tools

Search this Thread

Oct 26, 2019 | 08:46 AM

Novusuhu

Thread Starter

Burning Brakes

Joined: Sep 2017

Posts: 1,080

Likes: 65

From: Belgium

Charcoal canister hose

Hey everyone

What type is the hose that goes from the carb. to the charcoal canister?
Is it a vacuum hose or a hose resistant to fuel?

Oct 26, 2019 | 09:39 AM

pltmgr

Melting Slicks

Joined: Oct 2003

Posts: 2,198

Likes: 840

From: Chapel Hill NC

2025 c3 ('68-'73) of the Year Finalist - Unmodified

2025 C4 of the Year Finalist - Unmodified

2025 C8 Stingray of the Year Finalist - Unmodified

I believe its vacuum

Oct 26, 2019 | 12:25 PM

KenSny

Melting Slicks

Joined: Apr 2001

Posts: 3,399

Likes: 279

From: Olmsted Falls, Ohio

Well, doesn't the carb vacuum suck in the gas fumes from the canister? Then it would be better to use a fuel resistant line. How much different in cost can that possibly be?

Last edited by KenSny; Oct 26, 2019 at 12:25 PM.

Oct 26, 2019 | 12:55 PM

resdoggie

Had a 1976 L-82, 4-sp

Joined: Mar 2011

Posts: 5,338

Likes: 1,213

From: Some days your the dog and some days your the hydrant.

Royal Canadian Navy

I would use fuel line hose.

Oct 26, 2019 | 11:41 PM

7T1vette

Team Owner

Joined: Jan 2006

Posts: 37,637

Likes: 3,118

From: Crossville TN

It is a vacuum hose. Unless the canister is defective, there is very little 'flow' in a vacuum line. However, that line should be made of petroleum-tolerant synthetic rubber.

Oct 27, 2019 | 08:50 AM

KenSny

Melting Slicks

Joined: Apr 2001

Posts: 3,399

Likes: 279

From: Olmsted Falls, Ohio

Quote:

Originally Posted by 7T1vette

It is a vacuum hose. Unless the canister is defective, there is very little 'flow' in a vacuum line. However, that line should be made of petroleum-tolerant synthetic rubber.

The whole purpose of the canister is to trap fumes from the gas tank so they can be purged into the carb when the engine is running.
Fumes do indeed "flow" from the canistor, because of the vacuum being created by the port on the carb.

Oct 27, 2019 | 02:02 PM

Novusuhu

Thread Starter

Burning Brakes

Joined: Sep 2017

Posts: 1,080

Likes: 65

From: Belgium

Quote:

Originally Posted by KenSny

I looked up the data sheet of the vacuum lines I got.
It says they are resistant to oil and fuel. I think I'm good....

Thanks guys for the help!

Oct 27, 2019 | 02:06 PM

Novusuhu

Thread Starter

Burning Brakes

Joined: Sep 2017

Posts: 1,080

Likes: 65

From: Belgium

Is it bad when a a vacuum hose is hanging against the valve covers?
Will they melt (the vacuum hoses)? My valve covers are aluminum... I don't know how hot they get (never touched them when the engine was running).

Last edited by Novusuhu; Oct 27, 2019 at 02:06 PM.

Corvette Stories

The Best of Corvette for Corvette Enthusiasts

2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

Michael S. Palmer

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

Oct 27, 2019 | 03:24 PM

Tooch1

Burning Brakes

Joined: Oct 2013

Posts: 1,116

Likes: 520

From: McClellandtown, Pa.

Quote:

Originally Posted by Novusuhu

It shouldn't hurt the vacuum hose if it's lying along the valve covers. Most do! Now it wouldn't be wise to have them touching the exhaust manifolds.
Back to your original question about the Vacuum Canister hoses. On the earlier C3's thru 73 that have the cannisters there are three hoses. Two are the tough rigid fuel vapor type hoses and one is a vacuum hose. Check out the pic from my '73 just as an example.
Tooch