Engine Vacuum Check - Suzuki Wagon R Plus RB310 Service Manual

NOTE:
• For measuring compression pressure, crank engine at
least 250 rpm by using fully charged battery.
• If measured compression pressure is lower than limit
value, check installation condition of special tool. If it
is properly installed, possibility is compression pres-
sure leakage from where piston ring or valve contact.
Compression pressure
Standard
Limit
Max. difference between
any two cylinders
10) Carry out Steps 7) through 9) on each cylinder to obtain 4
readings.
11) After checking, install spark plugs and ignition coil assem-
blies (1) with high-tension cord (2).
12) Connect ignition coil couplers (3).
13) Connect fuel injector wires(4) at the coupler.

Engine Vacuum Check

The engine vacuum that develops in the intake line is a good indi-
cator of the condition of the engine. The vacuum checking proce-
dure is as follows:
1) Warm up engine to normal operating temperature.
NOTE:
After warming up engine, be sure to place transaxle gear
shift lever in "Neutral" (shift selector lever to "P" range
for A/T model), and set parking brake and block drive
wheels.
2) Stop engine and turn off the all electric switches.
ENGINE MECHANICAL (M13 ENGINE) 6A2-9
1400 kPa
2
(14.0 kg/cm , 199.0 psi)
1100 kPa
2
(11.0 kg/cm , 156.0 psi)
100 kPa
2
(1.0 kg/cm , 14.2 psi)