Suzuki 2000 Grand Vitara SQ625 Service Manual page 658

6F2-10 IGNITION SYSTEM (FOR J20 / H25 ENGINES)
J20 Engine
H25 Engine
INSPECTION
CAUTION:
When servicing the iridium/platinum sparkplugs (slender
center electrode type plugs), do not touch the center elec-
trode to avoid damage to it. The electrode is not strong
enough against mechanical force as it is slender and its ma-
terial is not mechanically tough.
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:
NOTE:
Under –25_C (–13_F), the spark plugs with an asterisk (*) are
highly recommend for better engine starting performance.
INSTALLATION
1) Install spark plug(s) and tighten them to specified torque.
2) Install ignition coil assembly securely.
3) Tighten ignition coil bolt, and then connect ignition coil coupler.
4) For H25 engine, install ignition coil cover.
1. Ignition coil bolt
2. Ignition coil assembly
3. Spark plug
DENSO K20PR-U11/SK16PR11
NGK BKR6E-11/*IFR5J11
Tightening Torque
.
(a): 25 N m (2.5 kg-m, 18.0 lb-ft)