See also:

Spark plugs
WARNING Be sure the engine and the ignition switch are off and that the parking brake is engaged securely. CAUTION Be sure to use the correct socket to remove the spark plugs. An incorre ...

Warning/indicator lights and audible reminders
Warning/indicator lights and audible reminders ...

Replacing spark plugs
Replacing spark plugs If replacement is required, see an INFINITI retailer for servicing. Iridium-tipped spark plugs It is not necessary to replace the iridiumtipped spark plugs as frequently as ...