F 150 Heritage 4WD Pickup V6-4.2L VIN 2 (2004)
Spark Plug: Service and Repair
SPARK PLUG
Remover, Spark Plug Wire
SPECIAL TOOL(S)
REMOVAL
1. CAUTION:
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Spark plug wires must be connected correctly.
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It is important to twist the spark plug wire boots while pulling upward to avoid possible damage to the spark plug wire.
Using the special tool, with a twisting motion pull the spark plug wire off the spark plug.
2. NOTE:
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Use compressed air to remove any foreign material in the spark plug well before removing the spark plugs.
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If an original spark plug is reused, 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 spark plug.
3. Inspect the spark plug firing tip.