Nissan Altima Owners Manual: Spark plugs

REPLACING SPARK PLUGS


REPLACING SPARK PLUGS

Iridium-tipped spark plugs

It is not necessary to replace iridium-tipped A spark plugs as frequently as conventional type spark plugs because they last much longer. Follow the maintenance log shown in the “NISSAN Service and Maintenance Guide”. Do not service iridium-tipped spark plugs by cleaning or regapping.

● QR25DE: Always replace spark plugs with recommended ones.

● VQ35DE: Always replace spark plugs with recommended or equivalent ones

WARNING

Be sure the engine and 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.

If replacement is required, see your NISSAN dealer for assistance.

    Drive belt
    QR25DE eng 1. Crankshaft pulley 2. Drive belt Automatic tensioner 3. Water pump pulley 4. Alternator 5. Air conditioner WARNING Be sure the ignition switch is placed in the OFF or LOCK posit ...

    Air cleaner
    QR25DE NOTE: The air cleaner filter should not be cleaned and reused. Replace the air cleaner filter according to the maintenance log shown in the “Warranty Information and Maintenance Bookl ...

    Other materials:

    Seat belt maintenance
    ● To clean the seat belt webbing, apply a mild soap solution or any solution recommended for cleaning upholstery or carpet. Then wipe with a cloth and allow the seat belts to dry in the shade. Do not allow the seat belts to retract until they are completely dry. ● If dirt builds ...

    P1421 Cold start control
    Description ECM controls ignition timing and engine idle speed when engine is started with prewarming up condition. This control promotes the activation of three way catalyst by heating the catalyst and reduces emissions. DTC Logic DTC DETECTION LOGIC NOTE: If DTC P1421 is displayed wit ...

    Inspection and adjustment
    ECM RE-COMMUNICATING FUNCTION  Description Performing following procedure can automatically perform re-communication of ECM and BCM, but only when the ECM has been replaced with a new one (*1). *1: New one means an ECM which has never been energized on-board. (In this step, initiali ...