Ford Mustang (1999-2004) Service Manual: Spark Plugs
Removal and Installation
1. Remove the ignition coil-on-plug. For additional information, refer to Ignition Coil-On-Plug in this section.
2. NOTE: Use compressed air to remove any foreign material from the spark plug well before removing the spark plugs.
NOTE: If an original spark plug is used, make sure it is installed in the same cylinder from which it was taken. New spark plugs can be used in any cylinder.
Remove the RH spark plugs.
3. Remove the LH spark plugs.
4. Inspect the spark plugs. Install new spark plugs as necessary. For additional information, refer to Section.
5. Adjust the spark plug gap as necessary.
6. To install, reverse the removal procedure.
Ignition Coil-On-Plug
Material
Item
Specification
Silicone Brake Caliper Grease
and Dielectric Compound
D7AZ-19A331-A or equivalent
ESE-M1C171-
A
Removal and Installation
1. Disconnect the battery ...
Engine Emission Control
Torque Specifications
...
Other materials:
Engine Cooling (Diagnosis and Testing)
Special Tool(s)
Pressure Tester
014-R1072 or equivalent
73III Automotive Meter
105-R0057 or equivalent
Worldwide Diagnostic System
(WDS)
418-F224,
New Generation STAR (NGS)
Tester
418-F052, or equivalent scan ...
Spark Plug - Inspection
1. Inspect the spark plug for a bridged gap.
Check for deposit build-up closing the gap between the electrodes.
Deposits are caused
by oil or carbon fouling.
Clean the spark plug.
2. Check for oil fouling.
Check for wet, black deposits on th ...
Inspection and Verification
1. Verify the customer concern.
2. Visually inspect for obvious signs of electrical damage.
Visual Inspection Chart
Electrical
Central junction box (CJB) Fuse 31 (5A)
Damaged wiring harness
Loose or corroded connections
...
