Suzuki Engine 2002 GRAND VITARA SQ625, Service Manual

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6A4-4 ENGINE MECHANICAL (J20 ENGINE)
On-Vehicle Service
Compression Check
Check compression pressure on all 4 cylinders as follows :
1) Warm up engine.
2) Stop engine after warming up.
3) Disconnect accelerator cable (3) from clamp (4) (For LH
steering vehicle only).
4) Disconnect ignition coil couplers.
5) Remove ignition coils (1).
6) Remove all spark plugs (2).
7) Disconnect fuel injector wires at the coupler (5).
8) Install special tool (Compression gauge) into spark plug
hole.
Special tool
(A) : 09915-64510-001
(B) : 09915-64510-002
(C) : 09915-64530
(D) : 09915-67010
9) Disengage clutch (to lighten starting load on engine) for M/T
vehicle, and depress accelerator pedal all the way to make
throttle fully open.
NOTE:
After warming up engine, place transmission gear shift
lever in “Neutral” (shift selector lever to “P” range for A/T
model), and set parking brake and block drive wheels.