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Disconnect the negative battery cable, and if the vehicle has been run recently, allow the engine to thoroughly cool.
Carefully twist the spark plug wire boot to loosen it, then pull upward and remove the boot from the plug. Be sure to pull on the boot and not on the wire, otherwise the connector located inside the boot may become separated.
Twist and pull the spark plug wire from the spark plug Always use a special spark plug socket with a rubber insert to remove the spark plugs. A 5/8 socket is required on most of the vehicles covered by this manual Use a ratchet and an appropriate extension if necessary to loosen the spark plugs When the plug is loosened all the way, the rubber insert in the socket will hold the plug, however, use your finger to hold the plug in until it is out of the engine compartment Inspect the spark plugs upon removal and adjust the gap or replace as necessary