Charcoal canister replacement or rebuild or Auto Zone parts

[Chris Sandstorm FJ]

Hey I have the gas pressure issue and believe my charcoal canister is in need of repair/replace.

There is a pretty good thread over in the 80 series section by Jeeper. https://forum.ih8mud.com/80-series-tech/412261-charcoal-canister-great-option-18.html#post8932519

Has anyone in here done the lower cost option? If so, does it work ok at altitude?

A new OEM one is 500.00

 

[newbtrayback]

I did the Auto zone fix on my 92'. Made an immediate difference. No more spraying gas when filling up and no more gas smell in cabin. I live in Texas so can't say on altitude

 

[2001LC]

Good question Chris.

I'd be very interest what test were done to make you "believe" this?

 

[paflytyer]

Chris.....I've had this issue for a long time. My canister is located under where the spare should go, but same concept. It was so bad at one point that vapor would pour from my gas cap so heavy it would turn back into liquid and run down the side. I carried wipes just to clean it on the trail.

I checked all hoses and replaced the gas cap last year. Still had the issue. For the past 12 months+ I never filled all the way up unless I absolutely had to. Especially not right before hitting the trail. I always thought the charcoal would not dry out, but since then I've had very little trouble with the vapor/smell. Not in the heat, not at altitude. I *think* the charcoal canister gets overwhelmed from all the fuel in a full tank sloshing around and expanding from the heat/altitude and that's where the smell/vapor comes from. By not filling all the way (or giving that last squeeze at the pump after the auto shutoff) I'm leaving some room for all that to happen and the system to cope with all the extra vapor.

I also looked into a cheap fix like the 80/Dodge canister, but I couldn't find anything. I had no issues this year at all. Whether that's luck or it really worked, I don't know. But I'll take it for now.

Also, I left my truck running for a few minutes at altitude prior to shutting it off to let the EVAP system catch up.. As soon as you shut down, the EVAP system stops working, although when at it's worst the vapor would still continue to purge at the gas cap. I would slowly open the cap and allow the pressure to release. I think if I were to just twist the cap off quickly, I'd get a face full of fuel, so go slow when you do that.

 

[Phat1842Many]

Can't you just remove the charcoal canister? We've discussed this on the MR2 forum and venting to atmosphere (at a low point to avoid fumes) was a viable option.

Maybe you can still smell the vapor? If that's the case, I can see running the tube to the back of the car...

If it's passing smog that you're worried about, just keep the canister and remember how to plug it back in.

And before someone gets on their high horse about the environment, try pumping gas in Europe without gagging from all the fumes while you stand there holding the handle like it's 1986 (no handle clip). IF it actually matters to the environment, the scale is thrown off by the rest of the world filling up to open air.

Coming from California which goes so far as to mandate the most idiotic "gas cans" that make sure you don't leak any fumes, the smell while I fill up is the smell of freedom. Not much of that going around so I have to take it where I can get it (Yes, I know it also happens to be the smell of cancer and dead brain cells.)

Environmental flame war, BEGIN!

 

[Chris Sandstorm FJ]

Can't you just remove the charcoal canister? We've discussed this on the MR2 forum and venting to atmosphere (at a low point to avoid fumes) was a viable option.

Maybe you can still smell the vapor? If that's the case, I can see running the tube to the back of the car...

If it's passing smog that you're worried about, just keep the canister and remember how to plug it back in.

And before someone gets on their high horse about the environment, try pumping gas in Europe without gagging from all the fumes while you stand there holding the handle like it's 1986 (no handle clip). IF it actually matters to the environment, the scale is thrown off by the rest of the world filling up to open air.

Coming from California which goes so far as to mandate the most idiotic "gas cans" that make sure you don't leak any fumes, the smell while I fill up is the smell of freedom. Not much of that going around so I have to take it where I can get it (Yes, I know it also happens to be the smell of cancer and dead brain cells.)

Environmental flame war, BEGIN!

Lol, that could be plan B