Ignition Cable: Service and Repair

Spark Plug Wire Routing:

REMOVAL
1. Remove water pump pulley shield.

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

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

Removing Ignition Wires At Coil Pack:

3. Disconnect the ignition wires from the ignition coil by squeezing the locking tabs and twisting while pulling upward.
4. Open ignition wire separators and remove ignition wire.

INSTALLATION

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

1. Whenever an ignition wire is removed from a spark plug or ignition coil, or a new ignition wire is installed, apply Ford Silicone Dielectric Compound D7AZ-19A331-A (Motorcraft WA-10) or equivalent meeting Ford specification ESE-M 10171-A to the boots prior to installation using a small, clean tool. Coat the entire interior surface of the boots.
2. Install each ignition wire to the proper terminal on the ignition coil. The terminals on the ignition coil are numbered. Make sure the boots are fully seated and that both ignition coil boot locking tabs are engaged.
3. Route ignition wire through ignition wire separators and close ignition wire separators.
4. Connect ignition wires to spark plugs.
5. Install water pump pulley shield.