Mustang GT V8-4.6L SOHC VIN X (1998)
Spark Plug: Service and Repair
REMOVAL
1. Disconnect ignition wires from spark plugs.
2. Loosen spark plugs one-quarter turn and remove dirt or foreign material from spark plug areas of cylinder heads with compressed air.
3. Remove spark plugs.
NOTE: Three different styles of platinum-enhanced spark plugs are produced. If any spark plug is removed and re-installed, it must be installed
in the same cylinder from which it was removed. Each plug has a different part number and use.
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AWSF-32P spark plugs have a platinum-enhanced center electrode and are used in cylinders 5, 6, 7, and 8.
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AWSF-32PG spark plugs have a platinum-enhanced ground (side) electrode and are used in cylinders 1, 2, 3, and 4.
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If any spark plug is replaced, use only spark plugs with part number AWSF-32PP as listed on the vehicle emission calibration identification
label. This replacement spark plug has double-platinum enhancement on both the center and ground electrode and may be used in all eight
cylinders.
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 removal procedure in reverse order.
2. Tighten spark plugs to 10-20 Nm (80-180 lb-in).