The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 09-29-2016, 12:04 PM   #1
TwoFiftyShifter
Registered User
 
Join Date: Nov 2008
Location: Gwinnett GA
Posts: 1,803
Canister next to battery?

What is that big coffee can looking specimen next to the battery? Has a nozzle for a hose on top and the cap says Rochester. Supposed to be hooked to the carb right?
__________________
1982 K10 SWB
1987 V20 - Sold - Doh!
TwoFiftyShifter is offline   Reply With Quote
Old 09-29-2016, 12:38 PM   #2
Wrenchbender Ret
Registered User
 
Join Date: Oct 2005
Location: Overland Park, Ks.
Posts: 5,228
Re: Canister next to battery?

It is an evaporator canister. Fumes from the carb evaporate & go into this can. They are breathed off when you start the engine. Some are hooked to the gas tank also.
Wrenchbender Ret is offline   Reply With Quote
Old 09-29-2016, 12:38 PM   #3
biketopia
Senior Member
 
Join Date: Jul 2015
Location: Warrenton VA
Posts: 1,092
Re: Canister next to battery?

It's a charcoal canister, supposed to catch the fumes from the tank.
__________________
71 c-10 Long Bed, under the knife for a No Limit Engineering Wide Ride Chassis Pack and coil over static drop.

07 Silverado Classic 2wd

95 Camaro 427SBC/TH350
biketopia is offline   Reply With Quote
Old 09-29-2016, 01:20 PM   #4
truckster
Senior Member
 
truckster's Avatar
 
Join Date: Jan 2001
Location: Orem, Utah
Posts: 7,954
Re: Canister next to battery?

Quote:
Originally Posted by biketopia View Post
It's a charcoal canister, supposed to catch the fumes from the tank.
Exactly. It should be connected to the evap system, not directly to the carb.
truckster is offline   Reply With Quote
Old 09-29-2016, 03:40 PM   #5
LongBox
Registered User
 
Join Date: Sep 2016
Location: Vancouver BC
Posts: 784
Re: Canister next to battery?

My 71 had that thingy, but my 69 does not. One less thing to get in your way under the hood. But, just to make a positive contribution here, I seem to recall that the charcoal canister on my 71 had a replaceable filter. Might be worth checking.
__________________
Rick

-69 GMC 910 Long Box, 350
-98 Chev Silverado 1500, 350 Vortec 4L60e
-08 Mustang GT Convertible
LongBox is offline   Reply With Quote
Old 09-29-2016, 09:53 PM   #6
In The Ten Ring
Registered User
 
Join Date: Jun 2013
Location: West Virginia
Posts: 6,421
Re: Canister next to battery?

My dad unhooked my charcoal canister decades ago thinking it was "somehow a drag on performance." LOL SMH!

Charcoal canisters are still used on cars to help catch gasoline fumes. My 2002 Honda has one. I plan to replace my charcoal and hook mine back up also.
In The Ten Ring is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 03:32 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com