Ignition Cable: Service and Repair

REMOVAL

Spark Plug Wire Remover:

1. When removing ignition wires from spark plugs, use Spark Plug Wire Remover T74P-6666-A. Grasp and twist the ignition wire spark plug boot back and forth on the spark plug insulator to free the boot. Do not pull on the ignition wire directly as it may separate from the connector inside the boot.

CAUTION: Do not pull on the ignition wire as it may separate from the connector inside the boot.

Removing Ignition Wires At Coil Pack:

2. Disconnect the ignition wire from the ignition coil by squeezing the locking tabs and twisting while pulling upward.

CAUTION: Do not pull on the ignition wire as it may separate from the connector inside the boot.

3. Open ignition wire separators and remove ignition wire.

INSTALLATION
1. Whenever an ignition wire is removed for any reason from a spark plug or ignition coil, or a new ignition wire is installed, Silicone Dielectric Compound D7AZ-19A331-A, Motorcraft WA-10 or equivalent meeting Ford specification ESE-M1C171-A must be applied to the ignition wire boot prior to installation. Using a small, clean tool, coat the entire interior surface of the boot with Silicone Dielectric Compound D7AZ-19A331-A, Motorcraft WA-10 or equivalent meeting Ford specification ESE-M1C171-A.

CAUTION: Proper installation of ignition wires is critical to vehicle operation. If one ignition wire is not properly installed on spark plug or ignition coil, both spark plugs connected to that segment of the ignition coil may not fire under load.

Ignition Wire Routing:

2. Install each ignition wire to the proper terminal on the ignition coil. The terminals on the ignition coil and the ignition wire are numbered. Make sure the boots are fully seated and that both ignition coil boot locking tabs are engaged.
3. Route the spark plug wire set.
4. Connect the spark plugs to the spark plug wire set.