Spark plugs

Be sure the engine and ignition switch

Be sure the engine and ignition switch are off and that the parking brake is engaged securely.

Be sure to use the correct socket to

Be sure to use the correct socket to remove the spark plugs. An incorrect socket can damage the spark plugs.

See also:

Using the system
Initialization When the ignition switch is placed in the ON position, NISSAN Voice Recognition is initialized, which takes a few seconds. When completed, the system is ready to accept voice com ...

Rear-facing child restraint installation using the seat belts
WARNING The three-point seat belt with Automatic Locking Retractor (ALR) must be used when installing a child restraint. Failure to use the ALR mode will result in the child restraint not being ...

Safety
The 2007 Nissan Altima received a Good rating — the highest possible — in the Insurance Institute for Highway Safety's frontal-offset crash test. As of publication, IIHS hasn't subjected the A ...