Charcoal Canister Needed - Which aftermarket one?

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Randy88FJ62

Randy88FJ62

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There was a really good thread on swapping charcoal canisters for an after market one. I can't find the info. Mine is toast and I want a new one rather than just swapping the hoses.

Thanks.
 
Yes, it's the Duralast VC120

I believe all of these are the same part, just rebranded:

CARQUEST 73-10006
STANDARD MOTOR CP1031
AIRTEX 4B1004
Wells VC120

Application is mid to late 90s GM

Should be around $60 taxed.
 
I'm sure most 60s are in need of a charcoal canister. Can someone explain what the canister does and if it isn't working or is bypassed, is there a need to replace it with a new one?
Thanks
 
Thanks for all the part numbers. Any fancy fab work required to get it to fit or is the swap fairly easy?
 
If it isn't working properly with a stuck check valve it WILL over pressurize the gas tank. The tank won't vent. Not good.

Replacement is optional. A new one or refurbished one will stop the engine bay of stinking of gas fumes.

Swapping the two small hoses on top of the canister will allow the tank to vent freely. There's no check valve in the purge pipe. But there often will be gasoline fumes stench when the car is parked in a garage.

image.webp
 
i've done the hose swap because of fuel pressurizing out the gas cap. but i didn't know the downside of that hose swap. thanks for the clarification
 
Actually... Swapping the hoses will also slightly lower your mpg too. The engine will no longer be sucking in air when ventilating the canister while driving, which normally leans out the A/F mixture to where it's supposed to be.

The engine will run a bit richer swapping the hoses.
 
charcoal.webp

..

Swap is easy, on the 60s anyway -- don't know the 62 setup, if different. There's a pic somewhere of a clean tube routing, as it will be a little different from stock. I saved it but can't find at the moment. Will post when (if) I do.
 
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I did the hose swap on mine and it no longer pressurizes the tank like it did before. The welds on the tank were more important to me than the occasional smell of fumes in the engine bay so I never bothered to replace the canister. MPG? LOL!
 
I cut mine open and refilled it. My purge tubing is plugged on the drivers side due to a PO that had desmoged it in a rough way so I didn't want to swap the hoses. Since I did it my gas cap does not do the big whoosh anymore.
 
Output Shaft said:
Actually... Swapping the hoses will also slightly lower your mpg too. The engine will no longer be sucking in air when ventilating the canister while driving, which normally leans out the A/F mixture to where it's supposed to be.

The engine will run a bit richer swapping the hoses.
Click to expand...

Thanks for the details. I didn't realize the canister was such a big part of the fuel delivery. I thought it was more of a vapor thing for after the truck had shut off. Might have to replace this I guess. Gas running down the side of the new paint is always a downer too. This might explain the gas smell in the garage too, even though I can't find anywhere I should be smelling it as strong as it is after a long drive home and parking in the garage.

BTW OS - what is your day job? You know a lot of sh!t . And always have excellent advice. Thank you.
 
test that VCV...they DO go bad...
 
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