Spark Plug Inspection

CAUTION:

When servicing the iridium/platinum spark plugs (slender center electrode type plugs), do not touch the center electrode to avoid damage to it. The electrode is not strong enough against mechanical force as it is slender and its material is not mechanically tough.
Do not clean or adjust gap for the iridium/platinum spark plugs.

Inspect them for electrode wear, carbon deposits and insulator damage.

If any abnormality is found, adjust air gap, clean with spark plug cleaner or replace with specified new plug.

Spark plug air gap

"a": 1.0 - 1.1 mm (0.039 - 0.043 in.)

Fig 1: Adjusting Spark Plug Air Gap
Courtesy of SUZUKI OF AMERICA CORP.

Spark plug type

NOTE: Under -25C(-13F), the spark plugs with an asterick (*) are highly recommend for better engine starting performance.