Suzuki WagonR+ RB310 Service Manual page 2481

6A1-6 ENGINE MECHANICAL
1
2
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.
4) Disconnect fuel injector wire harness at couplers (1).
5) 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
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.
NOTE:
For measuring compression pressure, crank engine at
least 250 r/min. by using fully charged battery.
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, install spark plugs and ignition coil assemblies
and connect injector wire harness connector securely.
Compression pressure
2
1400 kPa (14.0 kg/cm
2
1100 kPa (11.0 kg/cm , 156.4 psi)
2
100 kPa (1.0 kg/cm , 14.2 psi)
, 199.0 psi)