charcoal canister - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 09-26-2004, 08:34 PM   #11
Senior Member
Certified Car Nut
 
Join Date: Jun 2003
Posts: 15,928
Thanks: 0
Thanked 0 Times in 0 Posts
BonneMeMN is on a distinguished road
Default

I guess i'm mostly an ethical/responsible car enthusiast. Any car that isn't a trailor queen should have a CAT on for instance...

I don't know how much gas fumes can do or how it helps, but it'* there for a reason.
BonneMeMN is offline   Reply With Quote
Old 09-26-2004, 09:04 PM   #12
Senior Member
Posts like a Supercharger
 
Join Date: Apr 2004
Location: Wisconsin
Posts: 185
Thanks: 0
Thanked 0 Times in 0 Posts
int_53185 is on a distinguished road
Default

I believe its there to clean the vent fumes from the gas tank. Im sure after a few years it loses its effectiveness anyway.
int_53185 is offline   Reply With Quote
Old 09-26-2004, 09:47 PM   #13
Senior Member
True Car Nut
 
Join Date: Sep 2002
Posts: 3,392
Thanks: 0
Thanked 0 Times in 0 Posts
fuddyduddy121 is on a distinguished road
Default

It temporarily stores excess gas vapors from the tank so that they do not vent into the atmosphere. It helps improve ambient air quality.
fuddyduddy121 is offline   Reply With Quote
Old 09-26-2004, 10:45 PM   #14
Senior Member
Certified Car Nut
 
Join Date: Oct 2003
Posts: 19,756
Thanks: 0
Thanked 0 Times in 0 Posts
1993 SLE is on a distinguished road
Default

so basically if you do not have emissions tests it is not needed
1993 SLE is offline   Reply With Quote
Old 09-26-2004, 11:45 PM   #15
Senior Member
True Car Nut
 
Join Date: Nov 2002
Location: Texarkana, Texas
Posts: 6,041
Thanks: 0
Thanked 0 Times in 0 Posts
Damemorder is on a distinguished road
Default

Heh, the local inspection is checking that the lights work, the tires are good, the brakes work and the glass isn't cracked.
Damemorder is offline   Reply With Quote
Old 09-27-2004, 12:26 AM   #16
Senior Member
True Car Nut
Thread Starter
 
95naSTA's Avatar
 
Join Date: Feb 2003
Location: Philly
Posts: 4,508
Thanks: 0
Thanked 0 Times in 0 Posts
95naSTA is on a distinguished road
Default

Well sounds like I'm not being ethical or resposible by removeing it.


Anyway, this would also allow me to run any tb that was originally on a series 2 with a 4t65.
95naSTA is offline   Reply With Quote
Old 09-27-2004, 12:48 AM   #17
Senior Member
True Car Nut
 
Join Date: Oct 2002
Location: Genoa, Illinois
Posts: 4,013
Thanks: 0
Thanked 0 Times in 0 Posts
Allmachtige is on a distinguished road
Default

Personal experience as of this point shows that there are no negative side affects to removing the canister. I asked Scott Cook some time back and the general consensus was that I would have no problems in removing it, so I did to make room for a FWI. It WILL throw a code if you simply remove it because there is an attached selinoid that has a required 2 wire connector. I unscrewed the selinoid from the canister and mounted it by itself and mocked up a bypass with some parts from a local hardware store. After I did the bypass the check engine light turned off and hasn't been on since.

My opinion. If you are removing it for performance reasons (mainly a FWI) then by all means give it a go, but to remove it just to remove it is without reason.

As for the EGR, keep it unless you have an intercooler.
Allmachtige is offline   Reply With Quote
Old 09-27-2004, 02:13 AM   #18
Senior Member
Certified GM nut
 
Join Date: Feb 2003
Location: Georgia
Posts: 2,095
Thanks: 0
Thanked 0 Times in 0 Posts
DrJay is on a distinguished road
Default

Just a friendly FYI

Gasoline evaporates quite easily. In the past these evaporative emissions were vented into the atmosphere. 20% of all HC emissions from the automobile are from the gas tank. In 1970 legislation was passed, prohibiting venting of gas tank fumes into the atmosphere. An evaporative control system was developed to eliminate this source of pollution. The function of the fuel evaporative control system is to trap and store evaporative emissions from the gas tank and carburetor. A charcoal canister is used to trap the fuel vapors. The fuel vapors adhere to the charcoal, until the engine is started, and engine vacuum can be used to draw the vapors into the engine, so that they can be burned along with the fuel/air mixture. This system requires the use of a sealed gas tank filler cap. This cap is so important to the operation of the system, that a test of the cap is now being integrated into many state emission inspection programs. Pre-1970 cars released fuel vapors into the atmosphere through the use of a vented gas cap. Today with the use of sealed caps, redesigned gas tanks are used. The tank has to have the space for the vapors to collect so that they can then be vented to the charcoal canister. A purge valve is used to control the vapor flow into the engine. The purge valve is operated by engine vacuum. One common problem with this system is that the purge valve goes bad and engine vacuum draws fuel directly into the intake system. This enriches the fuel mixture and will foul the spark plugs. Most charcoal canisters have a filter that should be replaced periodically. This system should be checked when fuel mileage drops.

I also agree with Allmachtige that I'm not a big friend of EGR removal without taking proper steps to control detonation.
DrJay is offline   Reply With Quote
Old 09-27-2004, 09:53 AM   #19
Senior Member
Posts like a Camaro
 
Join Date: Jan 2004
Posts: 1,166
Thanks: 0
Thanked 1 Time in 1 Post
mkaake is on a distinguished road
Default

there'* a reason that we have a sticky at the top of this forum on 1992 egr-less motors...
mkaake is offline   Reply With Quote
Old 09-27-2004, 01:31 PM   #20
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Very good points here. Both about the EGR and the Evap canister. Both will throw codes if you remove them, as already stated. The EGR delete will burn valves over time, and the evap will gain you nothing by deleting it. Relocated, don't delete.
willwren is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
How to drop your charcoal canister. (In 9 easy steps) Damemorder Performance, Brainstorming & Tuning 7 03-23-2004 08:11 PM
Charcoal canister clicking BonneMeMN 1992-1999 12 02-10-2004 06:13 PM
Charcoal canister ticking? BonneMeMN 1992-1999 2 01-18-2004 09:09 PM
Charcoal Canister and Purge Shutoff Switch Kuhl 1992-1999 3 05-12-2003 01:05 PM
Damn charcoal canister is clicking Tonyrodz 1992-1999 2 12-11-2002 01:50 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 05:36 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.