Fuel Vapor Canister problem? - Subaru Forester Owners Forum
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post #1 of 5 (permalink) Old 09-30-2009, 10:00 AM Thread Starter
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Fuel Vapor Canister problem?

A few months ago I had a CEL code (I forget which one) in my 2000 Forester, which my mechanic traced to needing to replace the fuel vapor canister. (I admit that I did have a tendency to sometime over-fill the gas tank, which probably resulted in the canister finally getting over-saturated).

I have noticed though that ever since that time, my car does not seem to fill up quite as much as previously. The gas pump will usually click off too early. After it goes off, I can still usually manually pump anywhere from one to a few extra gallons into the tank. I don't want to risk over-filling it again and needing another canister though.

And now I don't seem to get nearly as many miles before the gas gauge again get to the "E".

Anyway...can the installation of this new fuel vapor canister be the cause of all this? Is it possible that some lines might be constricted, or the canister itself is causing this.

Paul Ruzicka
Aurora, Colorado
2000 Forester L
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post #2 of 5 (permalink) Old 09-30-2009, 11:04 AM
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The canister is only there to soak up rich fuel vapors left after shutoff.

It should not have anything to do with the fuel tank levels or filling, me thinks...
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post #3 of 5 (permalink) Old 09-30-2009, 03:46 PM
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What happens on Subaru's is there's a wire that corrodes and throws a cel. Check that wire near that black box behind the passenger rear wheel.

I doubt your canister is the problem. I get intermittent symptoms that you are experiencing. I just haven't had the time to check it out.

2001 L 5 spd, Borla header, custom exhaust.
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post #4 of 5 (permalink) Old 10-02-2009, 07:04 AM Thread Starter
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Thanks for the info. Since the vapor canister was replaced, the CEL code has not come back. However, I do now have the aforementioned problem filling the tank fully.

Paul Ruzicka
Aurora, Colorado
2000 Forester L
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post #5 of 5 (permalink) Old 10-11-2009, 06:01 PM
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Quote:
Originally Posted by ruzicka View Post
Thanks for the info. Since the vapor canister was replaced, the CEL code has not come back. However, I do now have the aforementioned problem filling the tank fully.
Have you checked the vent? A couple of us had this problem due to a blocked vent, check the 2nd and 3rd pages:
Car not filling with gas at pump.
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