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Fill Limit Vent Valve (FLW)

WARNING: This page is about a different car, the 2004 Mercury Monterey and 2004 Ford Freestar. However, it is still accessible from the selected car via links, so may be relevant.

The fill limit vent valve is mounted on top of the fuel tank. It has a main orifice which allows fuel vapor to route to the carbon canisters during refueling. This orifice is controlled by a float, when the tank is full the flow of vapor is stopped and prevents the tank from overfilling.

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