Ignition Spark Check; Ignition Timing Check And Adjustment - Suzuki GRAND VITARA XL-7 Owner's Manual

6F2-6 IGNITION SYSTEM (FOR H27 ENGINE)

Ignition Spark Check

WARNING:
Without disconnection of injector coupler, combustible
gas may come out from spark plug holes during this test
and may get ignited in engine room.
1) Remove surge tank cover.
2) Disconnect injector coupler (1).
3) Remove spark plug and check it for condition and type, refer-
ring to "SPARK PLUG" in this section.
4) If OK, connect ignition coil coupler to ignition coil assembly
and connect spark plug to ignition coil assembly. Ground
spark plug.
5) Crank engine and check if each spark plug sparks.
If no spark is emitted, inspect the related parts as described
under "DIAGNOSIS" in this section.
6) After checking, install spark plug, referring to "SPARK PLUG"
in this section.
7) Connect injector coupler (1).
8) Install surge tank cover.

Ignition Timing Check and Adjustment

NOTE:
Before starting engine, place transmission gear shift
lever in "Neutral" (shift selector lever to "P" range for A/T
model), and set parking brake.
1) Start engine and warm it up to normal operating tempera-
ture.
2) Make sure that all of electrical loads except ignition are
switched off.
3) Check to be sure that idle speed is within specification.
Refer to Section 6E2.
4) Connect SUZUKI scan tool to DLC (1) with ignition switch
OFF, restart engine and fix ignition timing by using fixed
spark mode of SUZUKI scan tool.
Special tool
(A) : SUZUKI scan tool