Examination
Unstable engine operation in idle mode and decreased engine efficiency can be caused by a non-functioning canister purge solenoid valve, a damaged canister or defective hoses.
Check the condition of the hoses connected to the canister. Replace them if necessary.
Check the condition of the canister. If the canister is not sealed, replace it.
If you suspect that the canister purge solenoid valve is not working, remove the electrical connector from it and disconnect the hoses. Connect the battery terminals with additional wires directly to the valve contacts. Blow air through the valve. Air should pass. Disconnect the battery and blow air through the valve again. Air should not pass.
Replacing the Charcoal Canister Cleaning Valve
The solenoid valve is located on the front right side of the engine compartment near the headlight (all engines except Zetec and Zetec-E). On Zetec and Zetec-E engines, the valve is located on the bulkhead behind the engine on the right side (see Fig. 4E.20).
Remove the negative battery terminal and disconnect the electrical connector from the solenoid valve. Disconnect the hoses from the valve and remove it.
Installation is carried out in the reverse order of removal.
Replacing the Charcoal Canister
Remove the negative terminal from the battery.
The canister is located under the expansion tank. To access the canister, remove the expansion tank. To access the back of the canister, lift the front of the car and remove the right wheel. Disconnect the hoses from the canister. Close them with plugs.
Unscrew the mounting screws and remove the canister from under the wheel arch. Installation is performed in the reverse order of removal.
The text of the article was copied from the website: fordbook