Spark Plug: Removal: 4.0L

On the 4.0L 6-cylinder engine the spark plugs are located below the coil rail assembly. To gain access to any/all spark plug(s), refer to COIL RAIL - 4.0L  for removal.

1. Prior to removing the spark plug, spray compressed air around the spark plug hole and the area around the spark plug. This will help prevent foreign material from entering the combustion chamber.
2. Remove the spark plug using a quality socket with a rubber or foam insert.
3. Inspect the spark plug condition. Refer to SPARK PLUG CONDITIONS .