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Old 04-12-2005, 02:20 PM   #1 (permalink)
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Picture of charcoal canister behind fender liner

For those interested, here is a picture of where the charcoal canister (evaporative emissions control) is located on a 1992 190E 2.3.
The fender liner must be removed first and then the canister is visible.

I was thinking of changing it since it's supposed to be replaced every four years or 75,000 miles I believe. However getting to the mounting screws looks to be too much of a pain. I think the fuse block would have to be removed to get to the screws from the inside fender area under the hood.

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Old 04-12-2005, 02:23 PM   #2 (permalink)
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RE: Picture of charcoal canister behind fender liner

I meant to mention that this is behind the front left wheel...
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Old 04-12-2005, 04:13 PM   #3 (permalink)
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RE: Picture of charcoal canister behind fender liner

Would it hinder the performance of the engine if it were 'old' and/or not working correctly? Like an O2 sensor.
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Old 04-12-2005, 04:57 PM   #4 (permalink)
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RE: Picture of charcoal canister behind fender liner

The reason I was considering replacing it was that I recently was getting a strong gasoline odor in the car, especially in the trunk. I replaced the gas cap and that seems to have solved the problem. However since the canister is where the fuel vapors are stored, and when engine temperature, rpm, etc, are appropriate, the fumes are purged from the canister via a vacuum signal and recycled into the intake manifold. So I figured that it would be a good idea to make sure it's working properly by replacing it.

Mike
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Old 04-12-2005, 10:41 PM   #5 (permalink)
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RE: Picture of charcoal canister behind fender liner

If you are getting a fuel smell comiing from the trunk you need to check the small rubber gasket that seals the fill tube and the body opening. When you fuel the car the gas replaces the vapors in the tank and when they rush out of the tube they meet resistance at the filler pump nozel and will divert in the trunk if this seal is bad. also any sloshed gas in the fill area will get into the trunk area.

Sorry about the long link.

http://catalog.eautopartscatalog.com/tayco/wizard.jsp?partner=tayco&clientid=alloem&baseurl=h ttp://www.alloemautoparts.com/&cookieid=1HU02QCLE1HU02QL4O&year=1992&make=MB&mod el=190-E-005&category=E&part=Fuel+Filler+Neck+Seal
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Old 04-12-2005, 10:47 PM   #6 (permalink)
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RE: Picture of charcoal canister behind fender liner

Edit above post.

Sorry I did understand your cap replacement seems to have cured the problem, but the vapors the cap allowed into that area wouldn't be able to get into the trunk area if this seal is working properly.[:)]
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Old 04-13-2005, 05:17 PM   #7 (permalink)
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RE: Picture of charcoal canister behind fender liner

Airboy, I think your suggestion is a good one. I'm going to order that seal and replace it.

Thanks, Mike
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Old 04-26-2011, 07:59 PM   #8 (permalink)
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What would be the benefits of replacing the charcoal canister? And what would the symptoms be if a car had bad charcoal canisters?

How to check? Thanks.
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