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Home >> Ford >> 2003 >> Explorer 2WD V6-4.0L VIN E >> Repair and Diagnosis >> Powertrain Management >> Ignition System >> Spark Plug >> Service Precautions
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Spark Plug: Service Precautions

CAUTION:
- It is important to twist the spark plug wire boots while pulling upward to avoid possible damage to the spark plug wire.
- Spark plug wires must be connected correctly. Mark the spark plug wires before removing them.
- Make sure the spark plug boots are positioned so the spark plug wires do not contact the exhaust manifold.