Inspection After Removal

WARNING: This page is about a different car, the 2009 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

Do not use a wire brush for cleaning the spark plugs. Replace as necessary.

Fig 1: Precaution For Cleaning Spark Plugs
Courtesy of NISSAN MOTOR CO., U.S.A.
If plug is covered with carbon, a spark plug cleaner may be used.
Cleaner air pressure: less than 588 kPa (6 kg/cm ² , 85 psi)

Cleaning time: less than 20 seconds
Checking and adjusting plug gap is not required between change intervals. If the gap is out of specification, replace the spark plug.

Fig 2: Precaution For Adjusting Spark Plug Gap
Courtesy of NISSAN MOTOR CO., U.S.A.