Ignition Cable: Service and Repair

REMOVAL

CAUTION: The alternator must be removed to allow for accessibility of the ignition wires that are routed below the alternator.

1. Disconnect ignition wire from spark plug by grasping the boot and twisting slightly in both directions to free it.

CAUTION: Do not pull on the ignition wire directly, the wire 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 directly, the wire 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, or a new ignition wire is installed, 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 with a small clean tool prior to installation.

Ignition Wire Installation:

2. Install each ignition wire to the proper terminal on the ignition coils. The terminals on the ignition coils are numbered. Make sure the boots are fully seated and that both locking tabs are engaged.

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

3. Route ignition wire through ignition wire separators and close ignition wire separators.
4. Connect ignition wire to spark plug.

NOTE: Ignition wire spark plug boot must be positioned 45 degrees from crankshaft centerline (outboard and forward) to ensure the boot seal is fully seated.