Mercury E2ZZ-9D653-A Reservoir Assembly

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The evaporative emissions control system sucks in fuel vapors from the gas tank, stores them, and sends them to the intake manifold. Also, a strong fuel odor in the engine compartment often means a fault in this system. Inspect the charcoal canister, located in the engine compartment or under the vehicle, for damage.

This system prevents hydrocarbons from polluting the atmosphere by storing fuel vapor from the tank. It includes a charcoal canister, purge control solenoid, connecting lines, fuel cap, and fuel injection system. Vapor from the tank is stored in a charcoal canister located near the front wheel well until the engine starts. The canister connects to a purge solenoid, which opens at engine start to draw vapor into the air cleaner. The canister and solenoid should be checked for damage or malfunction and replaced if necessary. To replace the canister, remove the mounting bolt, lower the canister, detach the hose, and remove the canister. For other components, use the VECI label schematic to locate and replace them. Installation is the reverse of removal.

Replacements of other components related to the air inlet control, deceleration throttle control, intake manifold heating, PCV system, and catalytic converter typically involve disconnecting wires and hoses, removing faulty components, and installing new ones as needed.

The emission control system is designed to prevent the release of raw fuel vapors into the atmosphere during engine-on and engine-off conditions.

To address EVAP faults, inspection of EVAP hose connections, canister condition, and component replacement may be necessary. It is recommended to seek a professional diagnosis for a comprehensive evaluation using an OBD-II scan tool.

The charcoal canister is accessible from below on most models.

The purpose of the Evaporative Emission Control System (EECS) is to capture and store fuel vapors evaporating from the fuel tank, throttle body, and intake manifold.

During the inspection, leaks and proper functioning of the purge control solenoid are checked.

A common symptom of a fault in the evaporative emissions control system is a strong fuel odor in the engine compartment.

Some signs of issues with the EVAP system include poor idle, stalling, and fuel odor.

If the canister is damaged, replacement is recommended.

To replace the air supply pump on MTA systems, loosen drivebelts, remove the faulty pump, label hoses, install the new pump, and adjust drivebelts.

Locate the canister in the engine compartment.

The canister is located on the left side radiator support, under the hood.

In carbureted engines, vapor from the gas tank and sealed carburetor is routed to the canister through valves like the bowl vent solenoid and thermal vent valve.

The fuel filler cap is unscrewed and removed from the vehicle.

Visual checks for leaks and good electrical connections should be done.

Inspections are carried out on hoses around the fuel vapor management valve (VMV), checking VMV voltage, and conducting further diagnostics with a SCAN tool if necessary.