Spark plugs

Spark plugs - Maintenance and do-it-yourself - Infiniti QX Owners Manual - Infiniti QX

Be sure the engine and the ignition switch 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 incorrect socket can damage the spark plugs.

Replacing spark plugs

If replacement is required, see an INFINITI

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 the conventional type spark plugs since they will last much longer. Follow the maintenance schedule in “INFINITI Service and Maintenance Guide”, but do not reuse them by cleaning or regapping. Always replace spark plugs with recommended or equivalent ones.

    See also:

    Warning signals
    To help prevent the vehicle from moving unexpectedly by erroneous operation of the Intelligent Key listed on the following chart or to help prevent the vehicle from being stolen, chime or beep sounds ...

    Explanation of maintenance items
    Additional information on the following items with “*” is found later in this section. ...

    Engine serial number
    Engine serial number The number is stamped on the engine as shown. ...