1. Gather tools and materials.
You will need the following tools and materials:
- - New spark plugs (Motorcraft SP-534 or equivalent)
- - Spark plug socket with extension
- - Ratchet
- - Torque wrench
- - Feeler gauge
- - Gapping tool
- - Dielectric grease
- - Compressed air
- - Shop towel
2. Prep your car.
- - Park your car on a level surface and turn off the engine.
- - Allow the engine to cool down completely.
- - Disconnect the negative terminal battery.
- - Remove the engine cover.
3. Locate the spark plugs.
- - There are three spark plugs on the passenger side of the engine, and three on the driver's side.
- - They are located in the cylinder head, just above the exhaust manifold.
4. Remove the spark plug wires.
- - Use the spark plug socket to loosen and remove the spark plug wires from the spark plugs.
5. Remove the spark plugs.
- - Use the spark plug socket and extension to loosen and remove the spark plugs.
6. Inspect the spark plugs.
- - Check the spark plugs for wear or damage. If the spark plugs are worn or damaged, replace them.
7. Gap the new spark plugs.
- - Use a feeler gauge to set the gap between the center electrode and the ground electrode. The gap should be between .052 and .056 inches.
8. Apply dielectric grease to the threads of the new spark plugs.
- - This will help to prevent the spark plugs from seizing in the cylinder head.
9. Install the new spark plugs.
- - Screw the new spark plugs into the cylinder head by hand until they are snug.
- - Use the spark plug socket and extension to tighten the spark plugs until they are snug.
10. Reconnect the battery negative terminal.
11. Replace the engine cover.
12. Start the engine and test drive the car.
Note: If you are not comfortable performing this yourself, it is best to have the spark plugs replaced by a qualified mechanic.
