Inspection After Removal

WARNING: This page is about a different car, the 2018 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.

Courtesy of NISSAN NORTH AMERICA, INC.

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 spark plug gap is not required between change intervals. Do not adjust the gap; replace the spark plug as necessary if out of specification.

Courtesy of NISSAN NORTH AMERICA, INC.