Diagnostic Information And Procedures; Engine Mechanical Symptom Diagnosis; Compression Pressure Check - Suzuki Intruder VZ1500 Service Manual

1D-3 Engine Mechanical:

Engine Mechanical Symptom Diagnosis

Refer to "Engine Symptom Diagnosis in Section 1A
(Page 1A-7)".

Compression Pressure Check

The compression pressure reading of a cylinder is a
good indicator of its internal condition.
The decision to overhaul the cylinder is often based on
the results of a compression test. Periodic maintenance
records kept at your dealership should include
compression readings for each maintenance service.
NOTE
• Before checking the engine for
compression pressure, make sure that the
cylinder head nuts are tightened to the
specified torque values and the valves are
properly adjusted.
• Make sure that the battery is in fully-
charged condition.
1) Warm up the engine.
2) Lift and support (for #1 cylinder) the fuel tank. Refer
to "Fuel Tank Removal and Installation in Section 1G
(Page 1G-9)".
3) Remove the right frame head cover (for #2 cylinder).
Refer to "Exterior Parts Removal and Installation in
Section 9D (Page 9D-5)".
4) Remove the all spark plug caps and spark plug (1).
Refer to "Spark Plug Cap and Spark Plug Removal
and Installation in Section 1H (Page 1H-4)".
1

Diagnostic Information and Procedures

B940H21404001
B940H21404002
1
I940H1140003-01
5) Install the compression gauge and adaptor in the
spark plug hole. Make sure that the connection is
tight.
Special tool
(A): 09915–64512 (Compression gauge)
(B): 09913–10750 (Compression gauge
adapter)
#1 Cylinder
(B)
#2 Cylinder
(B)
6) Keep the throttle grip in the fully-opened position.
7) Press the starter button and crank the engine for a
few seconds. Record the maximum gauge reading
as the cylinder compression.
(A)
I940H1140004-01
(A)
I940H1140005-01
I940H1140006-01