2. Grasp the spark plug boot and use a twisting motion to assist removing
the spark plug boot from the spark plugs.
Spark plug boot
3. Remove the spark plug with a 14 mm deep socket.
NOTE: Replace the spark plug if the electrode is worn; the insulator is rough,
cracked, broken, or blistered; or if the precious metal is not visible on the spark
plug electrode.
IMPORTANT: The color of the plug may not accurately reflect its condition. To
accurately diagnose a faulty plug, inspect the precious metal on the plug's
electrode. If no precious metal is visible, replace the plug.
a - Precious metal
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