On-Vehicle Service; Compression Check - Suzuki Swift User Manual

1
2
ENGINE MECHANICAL (G13B, 1-CAM 16-VALVES ENGINE) 6A1-5

ON-VEHICLE SERVICE

COMPRESSION CHECK

Check compression pressure on all four cylinders as follows:
1) Warm up engine.
2) Stop engine after warming up.
NOTE:
After warming up engine, place transmission gear shift le-
ver in "Neutral" (shift selector lever to "P" range for A/T
model), and set parking brake and block drive wheels.
3) Remove ignition coil assemblies (1) and all spark plugs (2) refer-
ring to Section 6F.
WARNING:
Failure in disconnecting couplers from ignition coil as-
semblies can cause spark to occur in engine room possi-
bly resulting in a dangerous explosion.
4) Disconnect fuel injector wire harness at couplers (2).
5) Install special tools (Compression gauge) into spark plug hole.
Special Tool
(A): 09915-64510-001
(B): 09915-64510-002
(C): 09915-64530
(D): 09915-67010
6) Disengage clutch (to lighten starting load on engine) for M/T
model, and depress accelerator pedal all the way to make
throttle valve full-open.
7) Crank engine with fully charged battery, and read the highest
pressure on compression gauge.
Standard
Limit
Max. difference between any
two cylinders
8) Carry out steps 5) through 7) on each cylinder to obtain four
readings.
9) After checking, connect couplers to fuel injectors securely and
install spark plugs and ignition coil assemblies.
Compression pressure
1400 kPa
2
(14.0 kg/cm , 199.0 psi)
1100 kPa
2
(11.0 kg/cm , 156.4 psi)
100 kPa
2
(1.0 kg/cm , 14.2 psi)