Crown Victoria V8-281 4.6L SFI (1998)
REMOVAL
1. Remove the coil-on-plug units from spark plug.
2. Loosen spark plugs 1/4 turn and remove any dirt or foreign material from spark plug areas of cylinder heads with compressed air.
3. Remove spark plugs.
4. Check and adjust spark plug gap.
NOTE: Refer to the Spark Plug Inspection Chart to determine the condition of the spark plugs.
INSTALLATION
1. Follow the removal procedure in reverse order.
2. Tighten spark plugs to 9-20 Nm (80-177 lb in).