SPARK PLUG REMOVAL/INSTALLATION[AJ (3.0L Duratec)]
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1. Disconnect the negative battery cable.
2. Remove the plug hole plate.
3. Remove the dynamic chamber. (See DYNAMIC CHAMBER REMOVAL/INSTALLATION[AJ (3.0L Duratec)].)
4. Remove the ignition coils. (See IGNITION COIL REMOVAL/INSTALLATION[AJ (3.0L Duratec)].)
5. Remove the spark plugs using a plug-wrench.
6. Install in the reverse order of removal.