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Vapor Canister

Vapor Canister

Bruce Beckman

Peter Rowland asked about gas fumes and Bruce Beckman replied.

Peter, I had some serious gas fumes being emitted from my '86 Xj6 last summer so I think one of the first things you can check out is the Evaporative Fuel Emissions canister located in front of the tire on the passenger side front of vehicle, inner fender. The canister contains activated charcoal and stores the unburnt gas from the cylinders when the engine is shut off as well as the fumes from the gas tanks. In the Haynes repair manual it is recommended to replace the canister at about every 25,000 miles. The problem is it costs $108 for the canister. The canister has a rubber bleeder hose on the top and is bent upward then downward to prevent siphoning action from the fuel tanks. Stick a finger in the end of the hose to try to detect wetness. Or you might have possibly noticed a small puddle of gas on the ground near this area which would lead you to determine that the canister is oversaturated.

In any case, if the canister hasn't been replaced in quite a while, remove it and pour carbureator cleaner in the vent pipe, shake the daylights out of it then drain the cleaner. This should remove the build up from the gas vapors and work for awhile for you.

I also experienced hesitation before my Jag was warmed up. When I cleaned the canister as I previously mentioned the problem was corrected. Hope this info is helpful and your problem is corrected.


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