My 87 Gt (350 swap) has this small steel tank tucked up under the passenger side rear fender. I think it was part of the original emissions systems, possibly connected to the fuel tank vent hose? Can anyone provide clarity on the function of this tank. TIA, DP

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Douglas Lindman

Fuel Vapor Tank between fuel tank and charcoal canister.
Since gas cap is not vented, there has to be a vent line so fuel tank doesn't get pressurized or get a vacuum.
Sort of a "catch can" in vent line to prevent raw fuel from being pushed into charcoal canister and ruining it.


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[This message has been edited by fierosound (edited 08-22-2020).]