Suzuki 2000 Grand Vitara SQ416, Service Manual

Page: 646 / 729

YH4
GRAND
VITARA
6F1-10 IGNITION SYSTEM (FOR G16 ENGINE)
1. Spark plug for No.1 cylinder
1. Spark plug for No.1 cylinder
1. Noise suppressor
2. Ignition timing
adjusting resistor
SPARK PLUG
REMOVAL
1) Pull out high-tension cord while gripping its cap.
2) Remove ignition coil assembly, referring to “Ignition Coil Assem-
bly” under “On-Vehicle Service” earlier in this section.
3) Remove spark plug
INSPECTION
Inspect them for:
Electrode wear
Carbon deposits
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: NGK
BKR6E-11 / IFR6E11
DENSO K20PR-U11 / SK20PR-A11
NOTE:
It is highly recommended to use NGK IFR6E11 for better en-
gine starting performance.
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.
INSTALLATION
1) Install spark plug and tighten it to specified torque.
Tightening Torque
(a): 25 N
.
m (2.5 kg-m, 18.0 lb-ft)
2) Install ignition coil assembly, referring to “Ignition Coil Assembly”
under “On-Vehicle Service” earlier in this section.
3) Install high-tension cord while gripping its cap.
IGNITION TIMING ADJUSTING RESISTOR
(IF EQUIPPED)
REMOVAL
1) With ignition switch OFF, remove ECM (or PCM), referring to
“ECM (or PCM)” under “On-Vehicle Service” in SECTION 6E1.
2) Remove ignition timing adjusting resistor.