| Author |
Message |
Farf Samba Member

Joined: July 12, 2009 Posts: 463 Location: Colorado
|
Posted: Sat Nov 02, 2019 3:05 pm Post subject: Replacement Emissions (Charcoal) Canister |
|
|
My emissions canister has been kaput (no charcoal) for years. Thought I would replace it with the Van Cafe offering. The bottom outlet is oval shaped and quite large compared to the stock unit. I wanted a better seal than just a silicon seal. I cut off about an inch of the oval outlet, heated it with a heat gun and rounded it out a bit with some channel locks and screwed a 3/4" MPT (male pipe thread) x 3/8" hose barb brass fitting in. It was a nice fit. Reheated the connection and installed a hose clamp. The fitting will unscrew it needed. I had to heat the top existing fitting a little bit to get it to go on. Very easy to do.
|
|
| Back to top |
|
 |
blackglasspirate Samba Member

Joined: June 24, 2006 Posts: 1634
|
Posted: Sun Nov 03, 2019 8:29 am Post subject: Re: Replacement Emissions (Charcoal) Canister |
|
|
Nice. I'm going to have to do this when I replace mine. Pretty sure I got too aggressive with the compressed air last time I was cleaning it out and may have blown a small hole out inside it  _________________ '87 Vanagon GL Westfalia
IG: @holidayatsee
FB: https://www.facebook.com/holidayatsee |
|
| Back to top |
|
 |
Igeo Samba Member

Joined: September 25, 2018 Posts: 921 Location: Oakland, CA
|
Posted: Sun Nov 03, 2019 9:13 am Post subject: Re: Replacement Emissions (Charcoal) Canister |
|
|
Is this canister something that should be replaced periodically? Like every 30 years or so? _________________ 1987 Westfalia 2.1 WBX Manual |
|
| Back to top |
|
 |
buspor63 Samba Member

Joined: February 17, 2005 Posts: 1179 Location: Knoxville,TN Where America stops for gas
|
Posted: Sun Nov 03, 2019 9:30 am Post subject: Re: Replacement Emissions (Charcoal) Canister |
|
|
That looks to be a good fix for a part that is not quite right for the fitment.
Another question for the knowledgeable?
At some past point< I took the bottom hose off and the charcoal drained out like sand. Is that normal? _________________ Imagine that, theres not an "h" in either Westfalia or Syncro? |
|
| Back to top |
|
 |
blackglasspirate Samba Member

Joined: June 24, 2006 Posts: 1634
|
Posted: Sun Nov 03, 2019 9:48 pm Post subject: Re: Replacement Emissions (Charcoal) Canister |
|
|
| buspor63 wrote: |
That looks to be a good fix for a part that is not quite right for the fitment.
Another question for the knowledgeable?
At some past point< I took the bottom hose off and the charcoal drained out like sand. Is that normal? |
Not normal as far as I know. The charcoal bits shouldn’t come out at all. The sand you saw was maybe just from it getting clogged from dust. It it was indeed charcoal bits then your canister is probably hosed or getting there. _________________ '87 Vanagon GL Westfalia
IG: @holidayatsee
FB: https://www.facebook.com/holidayatsee |
|
| Back to top |
|
 |
Merian Samba Member

Joined: January 04, 2014 Posts: 5212 Location: Orygun
|
Posted: Sun Nov 03, 2019 10:55 pm Post subject: Re: Replacement Emissions (Charcoal) Canister |
|
|
| Igeo wrote: |
| Is this canister something that should be replaced periodically? Like every 30 years or so? |
No - they are good until they either fall apart, or get contaminated by liquid fuel
- answer courtesy of CARB _________________ .... |
|
| Back to top |
|
 |
VdubVanner Samba Member

Joined: August 03, 2017 Posts: 734 Location: Cowtown AB
|
Posted: Mon Nov 04, 2019 7:53 am Post subject: Re: Replacement Emissions (Charcoal) Canister |
|
|
| Merian wrote: |
| Igeo wrote: |
| Is this canister something that should be replaced periodically? Like every 30 years or so? |
No - they are good until they either fall apart, or get contaminated by liquid fuel
- answer courtesy of CARB |
I'd replace the charcoal canister as soon as you hear any cavitation noise coming from your gas tank. When that canister is plugged or ineffective, it can cause rather loud suction noises in the tank as in "Ka-boom!" and air rushing in upon opening the gas cap. Ask me how I know. I covered the open end on the new version with some pantyhose and wire to stop any debris/insects from lodging in there. Inspect regularly. _________________ "Fritz", a temperamental and unforgiving 1989 Westy that proudly bears his German flags and status as a member of the exclusive GoWesty Belly Flop Club.
1989 Westy Makeover: GoWesty 2.3L Engine plus plus plus https://www.thesamba.com/vw/forum/viewtopic.php?t=...mp;start=0 |
|
| Back to top |
|
 |
Merian Samba Member

Joined: January 04, 2014 Posts: 5212 Location: Orygun
|
Posted: Mon Nov 04, 2019 12:46 pm Post subject: Re: Replacement Emissions (Charcoal) Canister |
|
|
yes, obviously cannot work if plugged
blow into it to test
or suck some fumes out and then go buy a van on the abomination thread (Wall of Shame)...  _________________ .... |
|
| Back to top |
|
 |
VdubVanner Samba Member

Joined: August 03, 2017 Posts: 734 Location: Cowtown AB
|
|
| Back to top |
|
 |
Franagon Samba Member

Joined: January 13, 2009 Posts: 228 Location: Savannah, GA
|
Posted: Wed Apr 15, 2020 6:34 pm Post subject: Re: Replacement Emissions (Charcoal) Canister |
|
|
This is all pure awesomeness! I finally have gotten to this part from doing my bostig conversion back in 2016. I am not sure how I have the system now, but I will be installing a new tank along with some other bits and want to have it all right. (haven't been experiencing any issues) So, do I need some sort of 'vacuum actuated purge valve' in the line coming from the bottom of the canister to my intake manifold? I guess I just need to search for that part for the Focus/Zetec and plumb it as it should be? Brilliant job to the OP for using that NPT to barb fitting like that. Thanks all! _________________ 84 Westy Wolfsburg Manual - RG6 Bostig |
|
| Back to top |
|
 |
bobbyblack  Samba Member

Joined: May 21, 2015 Posts: 4719 Location: United States, Iowa
|
Posted: Thu Apr 16, 2020 6:58 am Post subject: Re: Replacement Emissions (Charcoal) Canister |
|
|
When I did my tank reseal, I started hearing the bonk from my gas tank flexing in as I warmed up the engine. And, again when it relaxed after stopping the engine. I took my canister out, and cleaned the inlet. The bonk went away.
Under a year later, I started smelling gas on full gas tank fills. I was distraught, as that tank drop was no fun, and the thought of having messed it up somehow was giving me fits. Well, I now figured out that the charcoal can is plugged again, and somewhere along the timeline, that clog had forced out at least one of my seals when the gas had warmed up.
SO, lesson here, for me at least, is to pay better attention to the charcoal can. Replacing it once in a while would obviously include clearing any clogs, and thus, perhaps keep from blowing the seal(s) again.
-bobby _________________ '87 Westy 'Flossie','86 Westy 'R1','86 tintop GL - Subi2.2 'J2','83.5 stock tintop L 'ZoomBus','74 Karmann Ghia, '63 Notch |
|
| Back to top |
|
 |
dabaron Samba Member

Joined: June 21, 2018 Posts: 2748 Location: Philly, mang
|
Posted: Tue Oct 27, 2020 3:44 pm Post subject: Re: Replacement Emissions (Charcoal) Canister |
|
|
while i'm changing my canister, is there a good replacement for the check valve that opens to draw air to the intake manifold? _________________ 1991 Vanagon GL Camper
i had no idea i wanted to be a mechanic |
|
| Back to top |
|
 |
dabaron Samba Member

Joined: June 21, 2018 Posts: 2748 Location: Philly, mang
|
Posted: Tue Dec 01, 2020 3:18 pm Post subject: Re: Replacement Emissions (Charcoal) Canister |
|
|
| dabaron wrote: |
| while i'm changing my canister, is there a good replacement for the check valve that opens to draw air to the intake manifold? |
anyone? _________________ 1991 Vanagon GL Camper
i had no idea i wanted to be a mechanic |
|
| Back to top |
|
 |
natejohn Samba Member

Joined: February 20, 2020 Posts: 57 Location: Vancouver, BC
|
Posted: Sun Apr 04, 2021 8:03 pm Post subject: Re: Replacement Emissions (Charcoal) Canister |
|
|
| bobbyblack wrote: |
When I did my tank reseal, I started hearing the bonk from my gas tank flexing in as I warmed up the engine. And, again when it relaxed after stopping the engine. I took my canister out, and cleaned the inlet. The bonk went away.
Under a year later, I started smelling gas on full gas tank fills. I was distraught, as that tank drop was no fun, and the thought of having messed it up somehow was giving me fits. Well, I now figured out that the charcoal can is plugged again, and somewhere along the timeline, that clog had forced out at least one of my seals when the gas had warmed up.
SO, lesson here, for me at least, is to pay better attention to the charcoal can. Replacing it once in a while would obviously include clearing any clogs, and thus, perhaps keep from blowing the seal(s) again.
-bobby |
Ah thank heaven. I've finally stumbled across the right terms trying to figure out how to properly search the issue I've been having since replacing and sealing my fuel tank.
So as stated, I replace my fuel tank, and the fuel tank re-seal kit. After driving to the gas station and fueling up the first time, I noticed fuel coming from the top of the tank again when it hit full. Super annoyed since I'd just wrestled with the damn thing, I felt through the front RH wheel well to see if I noticed anything out of place and found the right side crossover tube tank seal was now inside the tank, still attached to the nipple.
I figured I must have pushed it in when I was setting the tank in place by accident, and replaced it. Ever since then, when sitting at a stop light, I hear these weird bonking/thud sounds from underneath me.
Now it makes total sense. The charcoal canister is plugged, and my fresh newly sealed tank is now so sealed and the canister is so plugged that it's actually pulling enough vacuum on the tank be noisy.
I guess that's next to replace! _________________ 1990 Vanagon Westfalia |
|
| Back to top |
|
 |
Franagon Samba Member

Joined: January 13, 2009 Posts: 228 Location: Savannah, GA
|
Posted: Mon Nov 18, 2024 11:55 am Post subject: Re: Replacement Emissions (Charcoal) Canister |
|
|
It takes me awhile to do things.... I see I posted to this in 2020. Well, I've collected all the bits, but mainly curious about the 2 'ports' on top of this charcoal canister the OP shows. I now have mine set up the same way. Do I block the 'small' port at the top of the canister or? I was going to route to the clean side of my air [filter] box, and then the other end to the tank. Kind of like the Bentley shows. (Well hoping that on the clean side of the air box does not pull a vacuum on the canister and tank. Haven't figured that out quite yet) Some just put a screen or filter over the open end, which would go to the air box. Any way, mostly interested in the 2 ports at the top. Do I just use the larger one, plug the small one? Thanks! _________________ 84 Westy Wolfsburg Manual - RG6 Bostig |
|
| Back to top |
|
 |
squeegee_boy Samba Member

Joined: April 27, 2008 Posts: 787 Location: Langley, BC, Canada
|
Posted: Thu Nov 21, 2024 10:40 am Post subject: Re: Replacement Emissions (Charcoal) Canister |
|
|
I whipped up an adapter for the bottom vent of this canister for a 1/4" hose.
I've used it to plumb the bottom vent into the unmetered side of the air intake. This will more or less guarantee that dust and other crap stay out of it.
Ideally print it in nylon due to presence of gasoline vapours, but it should last a good while in ABS or ASA.
It slides in snugly, but I added a smear of The Right Stuff to hold it in place.
https://www.printables.com/model/1082012-vanagon-charcoal-canister-nipple-adapter
_________________ 1984 FrankenSyncro Westy. EJ25 RMW kit |
|
| Back to top |
|
 |
kamzcab86 Samba Moderator

Joined: July 26, 2008 Posts: 8623 Location: Arizona
|
Posted: Thu Nov 21, 2024 11:39 am Post subject: Re: Replacement Emissions (Charcoal) Canister |
|
|
| Franagon wrote: |
| It takes me awhile to do things.... I see I posted to this in 2020. Well, I've collected all the bits, but mainly curious about the 2 'ports' on top of this charcoal canister the OP shows. I now have mine set up the same way. Do I block the 'small' port at the top of the canister or? I was going to route to the clean side of my air [filter] box, and then the other end to the tank. Kind of like the Bentley shows. (Well hoping that on the clean side of the air box does not pull a vacuum on the canister and tank. Haven't figured that out quite yet) Some just put a screen or filter over the open end, which would go to the air box. Any way, mostly interested in the 2 ports at the top. Do I just use the larger one, plug the small one? Thanks! |
Maybe this will help: https://www.thesamba.com/vw/forum/viewtopic.php?p=9361969 ? _________________ 1986 Cabriolet: www.Cabby-Info.com
1990 Vanagon Westfalia: Old Blue's Blog
2016 Golf GTI S
"Real knowledge is to know the extent of one's ignorance." - 孔子 |
|
| Back to top |
|
 |
|