Engine Vacuum Check - Suzuki Swift Sport 2004 Service & Repair Manual

1D-5 Engine Mechanical:
11) Connect negative cable at battery.
12) Install special tools (Compression gauge) into spark
plug hole.
Special tool
(A): 09915–64512
(B): 09915–64530
(C): 09915–67010
(C)
13) Disengage clutch (1) (to lighten starting load on
engine) for M/T vehicle, and depress accelerator
pedal (2) all the way to make throttle fully open.
14) 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. If it is properly
installed, possibility is compression
pressure leakage from where piston ring
and valve contact.
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)
(A)
(B)
I3RH0B140009-01
I2RH0B140005-01
2 , 199.0 psi)
2 , 156.0 psi)
15) Carry out Steps 12) through 14) on each cylinder to
obtain 4 readings.
16) Disconnect negative cable at battery.
17) After checking, install spark plugs and ignition coil
assemblies (2) with high-tension cord (3).
18) Connect ignition coil couplers (1).
19) Connect fuel injector wires (4) at the coupler.
20) Install cylinder head upper cover.
21) Install air cleaner assembly and air suction hose
referring to "Air Cleaner Components".
22) Install engine cover.
23) Connect negative cable at battery.

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.
NOTE
After warming up engine, be sure to place
transaxle gear shift lever in "Neutral", and set
parking brake and block drive wheels.
2) Stop engine and turn off the all electric switches.
3) Remove engine cover.
4) Remove air cleaner assembly and air suction hose
referring to "Air Cleaner Components".
5) Remove PCV hose (1) from PCV valve (2).
I2RH0B140003-01
S7RS0B1404002
1
2
I6RS0B141001-01