Compression Pressure Measurement - Isuzu A-4JA1 Workshop Manual

Industrial diesel engine
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MAINTENANCE
26

COMPRESSION PRESSURE MEASUREMENT

1. Start the engine and allow it to run for several
minutes to warm it up.
2. Stop the engine and cut the fuel supply.
3. Remove all of the glow plugs from the engine.
Compression Gauge :5-8840-2675-0
Adapter
4. Set a compression gauge to the No. 1 cylinder glow
plug hole.
5. Turn the engine over with the starter motor and take
the compression gauge reading.
Compression Pressure
Standard
31 (441/3.04)
:5-8840-9029-0
kgf/cm
2
(psi/MPa) at 200 rpm
Limit
22 (313/2.157)

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