Nissan Altima manuals

Nissan Altima (L34) 2019-2024 Owners Manual: Spark plugs

Replacing spark plugs

Nissan Altima L34. 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 "Maintenance and schedules" section of this manual. Do not service iridium-tipped spark plugs by cleaning or regapping.

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, it is recommended that you visit a NISSAN dealer for this service.

Variable voltage control system

CAUTION Do not ground accessories directly to the battery terminal. Doing so will bypass the variable voltage control system and the vehicle battery may not charge completely. Use electrical a ...

Air cleaner

NOTE: The air cleaner filter should not be cleaned and reused. Replace the air cleaner filter according to the maintenance log shown in the "Maintenance and schedules" section of this manual. To remo ...