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Charcoal Canister Replacement?

5079 Views 5 Replies 3 Participants Last post by  SPGreg
Are charcoal canisters for a 1990 c900 available anywhere new? I'm sure mine has never been replaced. Bentley says replace every 60,000 miles. But I haven't found a place that sells new ones. Or can they be cleaned up and re-used?

Also can you use silicone vacuum hoses to replace any of the canister hoses (like the one that goes to the intake manifold)?
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Unless you have an emissions guy who is out for blood, I just run mine surreptitiously disconnected and plugged off so that the fuel tank holds pressure (don't know if the pressure check the tank for EVAP emissions in BC, but they do here now).

They will pass emissions without it if you can make it look ok, the only reason it's there is for emissions.

Thanks, Drew. We do have emissions programs but they won't look under the hood, just check the gas tank/cap for pressure & analyze exhaust at idle and at speed. I've got a hose (connector, actually) that is cracked at the canister, so I guess I'll need to replace that for tank pressure to be sustained? It's the connecter on the hose coming from the intake manifold.

EDIT: I would still like to replace the canister if they're still manufactured.
I thought those were a lifetime service item unless physically damaged? When the system "purges" as the car runs it should clear any collected vapors, making the canister ready for use again once you shut down the car.

I literally know of no one, ever, who has replaced a charcoal canister... If you really really want to do this, you could go to your dealer and see if they have it. They probably won't, but if they do, it will probably be $800. Alternatively, you can actually pop the top off those units and access the charcoal fairly easily (I know, cause I have had a BBQ with used charcoal canisters). You could probably replace the "old" charcoal with some fresh charcoal. Get about 5 large bags that are intended for fish tank applications and that should be enough.
Just plug the hose at the fuel filler neck, behind the carpet at pass side of the trunk so the tank pressure test holds pressure correctly.
Thanks for the replies. I'll likely just replace the broken connector and call it a day. My emissions test is months away. I've really got no evidence things aren't working as they should. Why borrow trouble?!;)
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