Ignition Cable: Service and Repair
REMOVAL1. Disconnect the battery ground cable.
2. Mark the distributor cap towers with the cylinder numbers to ensure installation in the correct position. Disconnect the distributor to spark plug wires from the distributor cap by twisting and pulling the distributor to spark plug wire boots (not the distributor to spark plug wires) until the distributor to spark plug wires are free.
3. Note the differing lengths and the numbering of distributor to spark plug wires, with number 1 being the longest wire. This should help prevent confusion when determining the correct wire-to-plug connection.
Removing Spark Plug Wires:
4. Disengage the distributor to spark plug wires from the ignition wire separator and disconnect the distributor to spark plug wires from the spark plugs using Spark Plug Boot Puller D79P-6666-A or equivalent.
INSTALLATION
NOTE: Whenever a distributor to spark plug wire is removed for any reason from the spark plug or distributor cap, or a new distributor to spark plug wire is installed, Silicone Brake Caliper Grease and Dielectric Compound D7AZ-19A331-A (Motorcraft WA-10) or equivalent meeting Ford specification ESE-M1C171-A must be applied to the distributor to spark plug wire boot before the distributor to spark plug wire is connected.
1. Using a small, clean tool, coat the entire interior surface of the distributor to spark plug wire boot with Silicone Brake Caliper Grease and Dielectric Compound D7AZ-19A331-A (Motorcraft WA-10) or equivalent meeting Ford specification ESE-M1C171-A.
2. Connect the longest distributor to spark plug wire to the number 1 spark plug, then to the number 1 tower on the distributor cap.
3. Connect progressively shorter wires to the number 2, 3, and 4 spark plugs and distributor cap towers.
4. Secure the distributor to spark plug wires in the ignition wire separator.
5. Connect the battery ground cable.
6. Check for proper operation.