Spark Plug Inspection
WARNING: This page is about a different car, the 2004 Suzuki Vitara. However, it is still accessible from the selected car via links, so may be relevant.
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 them with specified new plug.
Spark plug air gap
"a": 1.0-1.1 mm (0.039-0.043 in.)
Spark plug type
DENSO: SK16PR11
NGK: * IFR5G11
NOTE:
Under -25 °C (-13 °F), the spark plugs with an asterisk (*) are highly recommend for better engine starting performance.