Spark Plug: Service and Repair

REMOVAL

CAUTION: Spark plug wires must be connected to the proper ignition coil terminal and spark plug. Mark the spark plug wire locations.

NOTE: Use compressed air to remove any debris from the spark plug well before removing the spark plugs.

1. Grasp the spark plug boot firmly and use a twisting, pulling motion to disconnect the spark plug wires from the spark plugs.







2. Remove the spark plugs.

NOTE: Remove any foreign debris from the spark plug wells with compressed air.







3. Inspect the spark plug.

INSTALLATION
1. Apply Silicone Brake Caliper Grease and Dielectric Compound D7AZ-19A331-A or equivalent meeting Ford specification ESE-M1C171-A to the inside of the spark plug wire boots.







2. Adjust the spark plug gap as required.







3. Install the spark plugs.
4. Connect the spark plug wires.