Engine Vacuum Check - Suzuki GRAND VITARA Owner's Manual

10) Crank engine with fully charged battery, and read the
highest pressure on compression gauge.
NOTE
• For measuring compression pressure,
crank engine at least 250 rpm by using
fully charged battery.
• If measuring compression pressure is
lower than limit value, check installation
condition of special tool. If it is properly.
Compression pressure
Standard: 1400 kPa (14.0 kg/cm
Limit: 1100 kPa (11.0 kg/cm
Max. difference between any two cylinders: 100
kPa (1.0 kg/cm 2 , 14.2 psi)
11) Carry out Steps 8) through 10) on each cylinder to
obtain 4 readings.
12) After checking, install spark plugs (2) and ignition
coils (1).
13) Install ignition coil couplers.
14) Connect injector wire harness at coupler.
15) Install engine cover.
, 199.0 psi)
2
2 , 158.0 psi)
I2RH01140002-01
Engine Mechanical: For J20 Engine 1D-71

Engine Vacuum Check

The engine vacuum that develops in the intake line is a
good indicator of the condition of the engine. The
vacuum checking procedure is as follows:
1) Warm up engine to normal operating temperature
and make sure that engine idle speed is within
specification.
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.
2) Stop engine and remove engine cover.
3) Disconnect vacuum hose (1) from vacuum pipe.
4) Connect special tools (vacuum gauge and hose
joint) to vacuum hose of intake manifold side.
Special tool
(A): 09915–67311
(B): 09918–08210
(C): 09355–35754–600 Hose, SUZUKI GENUINE
PARTS
(D): 09367–04002 3-way joint, SUZUKI GENUINE
PARTS
1
(C)
5) Start engine and run engine at specified idle speed,
and read vacuum gauge. Vacuum should be within
specification.
Vacuum specification
52.6 – 65.8 kPa (40 – 50 cmHg, 15.7 – 19.7 in.Hg)
at specified idle speed
6) After checking, remove special tools.
7) Connect vacuum hose to vacuum pipe.
8) Install engine cover.
S5JB0A1424002
(A)
(D)
(B)
I5JB0A142002-01