Ford E5TZ-9D653-A Reservoir Assembly

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The evaporative emissions control system functions to draw fuel vapors from the gas tank and fuel system, store them in a charcoal canister and route them to the intake manifold during normal engine operation. A common symptom of a fault in this system is a strong fuel odor in the engine compartment. If such an odor is detected, it is advisable to inspect the charcoal canister, which is located in the engine compartment or under the vehicle. The canister is accessible from below on most models. It is important to check for damage to the canister and the hoses at the top, as well as any signs of deterioration. Further details about the evaporative emissions control system are provided.

This system is designed to prevent hydrocarbons from being released into the atmosphere by trapping and storing fuel vapor from the fuel tank. The serviceable parts of the system include a charcoal filled canister, purge control solenoid, connecting lines, fuel tank filler cap, and the fuel injection system. Vapor trapped in the gas tank is vented through a valve in the top of the tank and routed to a charcoal canister located between the right front wheel well and the front bumper, where it's stored until the next engine start. The canister outlet is connected to an electrically actuated canister purge solenoid, which is connected to the intake system. The canister purge solenoid valve is normally closed, but when the engine is started, it opens to draw vapor stored in the canister into the air cleaner housing. The charcoal canister should be checked for any loose, missing, cracked, or broken fittings, as well as any cracks or damage. If the canister is damaged, it should be replaced. The canister purge solenoid valve should also be checked by applying vacuum and battery voltage to ensure it functions properly. If it does not, it should be replaced. To replace the charcoal canister, the single mounting bolt above the canister should be removed, and the canister should be lowered, the hose detached from the purge solenoid valve, and the canister removed. For all other components, the vacuum hose routing schematic on the VECI label should be used to locate the component to be replaced. The hoses and fittings should be labeled, detached, and the component removed. Installation is the reverse of removal.