Suzuki 2006 SX4, Service Manual

Page: 234 / 1478

1D-3 Engine Mechanical:
Diagnostic Information and Procedures
Compression Check
S6RW0C1404001
Check compression pressure on all 4 cylinders as
follows:
1) Warm up engine.
2) Stop engine after warming up.
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.
3) Remove ignition coils and all spark plugs referring to
“Ignition Coil Assembly (Including ignitor) Removal
and Installation in Section 1H”.
4) Disconnect fuel injector wire harness at the
connector.
5) Install special tool (Compression gauge) into spark
plug hole.
Special tool
(A): 09915–64512
(B): 09915–64530
(C): 09915–67010
6) Disengage clutch (to lighten starting load on engine)
for M/T vehicle, and depress accelerator pedal all
the way to make throttle fully open.
7) Crank engine with fully charged battery, and read the
highest pressure on compression gauge.
NOTE
• For measuring compression pressure,
crank engine at least 250 r/min by using
fully charged battery.
• If measured compression pressure is
lower than limit value, check installation
condition of special tool.
Compression pressure
Standard: 1400 kPa (14.0 kgf/cm
2 , 199.0 psi)
Limit: 1100 kPa (11.0 kgf/cm 2 , 158.0 psi)
Max. difference between any two cylinders: 100
kPa (1.0 kgf/cm
2 , 14.2 psi)
8) Carry out Steps 5) through 7) on each cylinder to
obtain 4 readings.
9) After checking, install spark plugs and ignition coils
referring to “Ignition Coil Assembly (Including ignitor)
Removal and Installation in Section 1H”.
10) Connect injector wire harness at connector.
11) Install air cleaner assembly referring to “Air Cleaner
Assembly Removal and Installation”.
I5JB0A142001-01
I2RH01140004-01