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Home >> Ford >> 2004 >> Excursion 6.8 S, RWD >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Auxiliary Emission Control Systems >> Evaporative Emissions System - Excursion & F250-F550 Super Duty >> Diagnosis And Testing >> Evaporative Emissions >> Principles of Operation >> Canister Vent Solenoid (OBD II vehicles only)

Canister Vent Solenoid (OBD II vehicles only)

During the Evaporative Emission Running Loss System Test Monitor, Evaporative Emissions Repair Verification Drive Cycle and the Evaporative Emission System Leak Test) the canister vent solenoid is closed, to allow either a vacuum to be drawn on the fuel tank or to hold a specified pressure in the system. The canister vent solenoid is normally open.

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