SERVICE INFORMATION 00 – 49
COMPRESSION PRESSURE MEASURE-
MENT
1. Start the engine and allow it to idle until the coolant
temperature reaches 70 - 80°C (158 - 176°F).
2. Remove the following parts.
* Glow plugs
* Fuel cut solenoid connector
* QOS (Quick-On Start System) fusible link wire at
the connector.
3. Set the adapter and compression gauge to the No. 1
cylinder glow plug hole.
Compression Gauge
(with Adapter): 5-8840-2008-0 (J-29762)
Adapter: 5-8531-7001-0
4. Turn the engine over with the starter motor and take
the compression gauge reading.
Compression Pressure at 200 rpm kPa (Kg/cm
2
/psi)
Standard Limit
4JB1 3,038 (31/441) 2,157 (22/313)
4JG2 3,334 (34/484) 2,452 (25/356)
5. Repeat the procedure (Steps 3 and 4) for the
remaining cylinders.
If the measured value is less than the specified limit,
refer to “Troubleshooting” in this Manual.
QUICK-ON START II SYSTEM
(4JB1 / 4JB1T / 4JB1TC only)
Quick-On Start System Inspection Procedure
1. Disconnect the thermo-sensor connection on the
thermostat outlet pipe.
2. Turn the starter switch to the “ON” position.
If the Quick-On Start II System is operating properly,
the glow relay will make a clicking sound within 15
seconds after the starter switch is turned on.
3. Measure the glow plug terminal voltage with a circuit
tester immediately after turning the starter switch to
the “ON” position.
Glow Plug Terminal Voltage V
Approx. 11
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