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Gas in the Charcoal Canister

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Old Jul 28, 2025 | 09:51 PM
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M60A3Driver's Avatar
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Default Re: Gas in the Charcoal Canister

Needswings does have a new pump & filter bracket. LINK - Fuel pump & filter bracket That's what I used when I did mine.
You're lucky your upper bracket to the trunk floor is still nice. Mine was all rusted.
No clue ion the canister shutoff valve.
 
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Old Jul 29, 2025 | 01:39 PM
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Default Re: Gas in the Charcoal Canister

" Does anybody know the purpose of the canister shutoff valve? "

The shut off valve is used to test the pressure in the tank. It's normal position is open. It will only be closed when the PTCM wants to test the gas tank and EVAP system for leaks. The PTCM will direct the shut off valve to close and then draw a very low pressure on the system ( like 1/2 lb. PSI ). If your system is leak free the vacuum pressure is noted, if no pressure the PTCM will recognize a leak and set a DTC.
If that valve is clogged or stuck in the closed position you will draw gas into the EVAP canister.
I believe you can still find unused canisters, but the old one will work. Just let it dry out, blow a little low pressure air through it to be sure it is dry and re-use it. I do not think re-using is a good idea, but it should work. However it will have a reduced capacity.
That entire area needs to be cleaned. You need a new shut off valve and hopefully you can find a new canister.

PS There are canisters with the shut off valve attached on ebay $100 ~ $180
 

Last edited by zip439; Jul 29, 2025 at 02:23 PM. Reason: added pa
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Old Jul 30, 2025 | 11:07 AM
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Default Re: Gas in the Charcoal Canister

Originally Posted by zip439
" Does anybody know the purpose of the canister shutoff valve? "

The shut off valve is used to test the pressure in the tank. It's normal position is open. It will only be closed when the PTCM wants to test the gas tank and EVAP system for leaks.
You did a much better job of explaining this than the manual.


I have my charcoal canister just sitting and letting it air out. I will test the valve and make sure it is working correctly.
 
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Old Aug 8, 2025 | 09:10 AM
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Default Re: Gas in the Charcoal Canister

Measured the fuel line sizes. I thought about ordering on amazon but I did not see the need to 10 feet of every hose size. LOL. I will probably go to my local car quest and get by the foot.

Fuel line sizes
6mm
8mm
10mm




The 10 mm from the tank is a manufactured hose and should not need replacement.

Tank hose 10mm uses a 24mm clamp
Tank hose 10mm uses a 24mm clamp

Clamp Sizes for the Charcoal Canister and Tank to Pump
[img alt="Camp Sizes
"]https://cimg9.ibsrv.net/gimg/www.crossfireforum.org-vbulletin/692x424/crossfire_tank_canister_clamp_sizes_6c8b19ddefb186 d2a31898318beb4003eda178fd.jpg[/img]
Camp Sizes


Did some painting for the brackets


Before
Before
Primer
Primer
Purty
Purty



 

Last edited by xintersecty; Aug 8, 2025 at 09:26 AM.
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Old Aug 13, 2025 | 10:11 AM
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Default Re: Gas in the Charcoal Canister

OK Everything has been put together. I need to put gas in the car run it a bit and then check for leaks.

First I tested the charcoal canister. I needed to identified the ground wire which is typically the brown wire. Ground goes to pin two. Hot goes to pin 1.
Charcoal Canister Pressure Valve
Charcoal Canister Pressure Valve

I used two small wire connectors that are typically used for breadboarding in the electronics world.

Green hot, blue ground
Green hot, blue ground

I used a 12 volt source and made sure it worked.
Unfused 12 volt source and valve
Unfused 12 volt source and valve


The charcoal canister shutoff valve is normal open.
Open
Open


Under test
Closed
Closed

So the valve checked out. So I put that back on the canister and into the car.

I put everything back together.

Fuel pump and fuel filter
Fuel pump and fuel filter

Used fuel line clamps instead the screw clamps when somebody replaced the fuel filter.







 
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Old Aug 13, 2025 | 10:13 PM
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Default Re: Gas in the Charcoal Canister

Originally Posted by xintersecty
OK Everything has been put together. I need to put gas in the car run it a bit and then check for leaks.

First I tested the charcoal canister. I needed to identified the ground wire which is typically the brown wire. Ground goes to pin two. Hot goes to pin 1.

Charcoal Canister Pressure Valve

I used two small wire connectors that are typically used for breadboarding in the electronics world.


Green hot, blue ground

I used a 12 volt source and made sure it worked.

Unfused 12 volt source and valve


The charcoal canister shutoff valve is normal open.

Open


Under test

Closed

So the valve checked out. So I put that back on the canister and into the car.

I put everything back together.


Fuel pump and fuel filter

Used fuel line clamps instead the screw clamps when somebody replaced the fuel filter.
I like the red bracket.
I hope that all goes well!
 
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Old Aug 14, 2025 | 08:11 AM
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Default Re: Gas in the Charcoal Canister

OK on testing last night I found a problem. I need to replace this clamp. This is the fuel line that goes to the regulator and onto the engine. With the new fuel filter can I just replace the hose and regulator? That means the regulator will be removed from the system so I can replace the old hose.

Leaking right at the clamp.
Leaking right at the clamp.
 
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Old Aug 14, 2025 | 08:39 AM
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Default Re: Gas in the Charcoal Canister

I wrote to Rob at @NeedsWings about the fuel regulator and he said that it should stay. THANK YOU!

You need to keep fuel regulation, and yes there are 3 different size clamps needed for the filter/regulator.Thank You, Rob
NeedsWings.com
I will replace the clamp and test again.
 
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Old Aug 15, 2025 | 03:17 AM
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Default Re: Gas in the Charcoal Canister

Originally Posted by xintersecty
I wrote to Rob at @NeedsWings about the fuel regulator and he said that it should stay. THANK YOU!



I will replace the clamp and test again.
Mine leaked as well. Different location, but changing the clamp solved it.
 
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Old Aug 16, 2025 | 10:14 AM
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Default Re: Gas in the Charcoal Canister

To be on the safe side I would also replace the fuel cap with a new one. The cap is duel acting (both pressure and vacuum) which helps regulate the pressure in the tank. With all the work you have done seems best to get that changed and eliminate a possible source of the problem you where having.

Did you replace the fuel line damper? It is show in you post #19 fourth picture down.
 

Last edited by zip439; Aug 16, 2025 at 10:23 AM.
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Old Aug 17, 2025 | 05:28 PM
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Default Re: Gas in the Charcoal Canister

Originally Posted by zip439
To be on the safe side I would also replace the fuel cap with a new one. The cap is duel acting (both pressure and vacuum) which helps regulate the pressure in the tank. With all the work you have done seems best to get that changed and eliminate a possible source of the problem you where having.

Did you replace the fuel line damper? It is show in you post #19 fourth picture down.
I had already replaced the fuel cap as I had that stupid fuel pressure code. No I did not replace the fuel regulator going to the motor. I kept mine. There is another post on the rarity of that part. I replaced the clamp and got fuel system tested. I have driven the car twice in out and back sorties. . I went over to my GF and we got ice cream. The next day I took her to a movie and we saw the naked gun. While entertaining in the movie theater, you can wait until home video. It was a decent flick.

So far no codes and I was able to fill the car with gas. Now to fix the other little things before the fall rally.
 
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Old Aug 18, 2025 | 07:54 AM
  #32 (permalink)  
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Default Re: Gas in the Charcoal Canister

So that anyone reading this thread does not get confused the damper shown in the picture #4 of post 19 is not a regulator. It is a damper that prevents surges in the fuel line to the engine thus maintaining a steady non fluctuating pressure and volume of fuel to the injectors. On the Crossfire the fuel pressure regulator is integral to the fuel filter. Dampers are pretty much generic so long as the size of the attached fuel line is the same. However, the Crossfire fuel filter is specific and not interchangeable because of the fuel pressure regulator function. (not to get into manual regulators and custom setups)
 
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Old Aug 18, 2025 | 11:51 PM
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Default Re: Gas in the Charcoal Canister

Originally Posted by xintersecty
I had already replaced the fuel cap as I had that stupid fuel pressure code. No I did not replace the fuel regulator going to the motor. I kept mine. There is another post on the rarity of that part. I replaced the clamp and got fuel system tested. I have driven the car twice in out and back sorties. . I went over to my GF and we got ice cream. The next day I took her to a movie and we saw the naked gun. While entertaining in the movie theater, you can wait until home video. It was a decent flick.

So far no codes and I was able to fill the car with gas. Now to fix the other little things before the fall rally.
I'm glad that you're back up and running!
 
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Old Aug 21, 2025 | 01:38 PM
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Default Re: Gas in the Charcoal Canister

Originally Posted by M60A3Driver
I'm glad that you're back up and running!
Thank you!

And thank you to all that helped with suggestions, advice, and shared in my misery @zip439 @zracer
 
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Old Sep 15, 2025 | 12:51 PM
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Default Re: Gas in the Charcoal Canister

I had a fuel leak from under car and was from the charcoal canister but it happens when the engine is NOT running but ignition on so pump running. So today removed pipes from the fuel filter/regulator the one that goes to the canister was full of fuel so guess that the diaphram in the filter/regulator has failed so changed out F/R but can't test at moment because one of the new clips failed on install so fingers crossed its fixed when i get some more clips
 
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Old Sep 15, 2025 | 01:13 PM
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Default Re: Gas in the Charcoal Canister

Originally Posted by Robskytoon
I had a fuel leak from under car and was from the charcoal canister but it happens when the engine is NOT running but ignition on so pump running. So today removed pipes from the fuel filter/regulator the one that goes to the canister was full of fuel so guess that the diaphram in the filter/regulator has failed so changed out F/R but can't test at moment because one of the new clips failed on install so fingers crossed its fixed when i get some more clips
Make sure you get the right fuel hose pressure clamps. Most auto stores have them. Measure the hose diameter and get a clamp to match.
 
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Old Sep 15, 2025 | 01:44 PM
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Default Re: Gas in the Charcoal Canister

Originally Posted by Robskytoon
I had a fuel leak from under car and was from the charcoal canister but it happens when the engine is NOT running but ignition on so pump running. So today removed pipes from the fuel filter/regulator the one that goes to the canister was full of fuel so guess that the diaphram in the filter/regulator has failed so changed out F/R but can't test at moment because one of the new clips failed on install so fingers crossed its fixed when i get some more clips
be sure all liquid gas has drained out of the charcoal filter and give it a chance to air dry before hooking it all back up.
 
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Old Sep 15, 2025 | 11:47 PM
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Default Re: Gas in the Charcoal Canister


Use a high pressure fuel clamp like this
 
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Old Sep 16, 2025 | 09:07 AM
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Default Re: Gas in the Charcoal Canister

BTW as an update, I got the stupid high pressure gas tank code again. Sigh. I will pull the purge valve in the engine compartment and test it. It's actually new. I still have the old one.
 
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Old Sep 16, 2025 | 06:19 PM
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Default Re: Gas in the Charcoal Canister

Originally Posted by xintersecty
BTW as an update, I got the stupid high pressure gas tank code again. Sigh. I will pull the purge valve in the engine compartment and test it. It's actually new. I still have the old one.
That sucks. I hope switching them out solves it.
 
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