Check The Compression Ratio; Check The Dtc Detected (Engine Ecu) 3 - Hino Motors HINO 155 series Workshop Manual

6

Check the compression ratio

SST
Do the measurements meet the standard value?
Go to step 7.
7

Check the DTC detected (Engine ECU) 3

Has DTC P0300 been detected?
Replace the engine ECU.
Perform "After-inspection work" of INFOR-
MATION section.
ENGINE (J05E)/TROUBLESHOOTING
Warm up the engine. (engine coolant temperature: 80 C {176 F}
1.
or more)
2. Stop the engine.
3. Remove injectors from all cylinders.
4. Install the special tool (SST) and measure the compression ratio of
each cylinder.
TO
ENGINE
SHTS021270300387
Engine revolution: 150 r/min
YES
Warm up the engine. (engine coolant temperature: 80 C {176 F}
1.
or more)
2. Stop the engine and set the starter key to the "ON" position.
3. Select [Engine] and check if P0300 has been detected.
SHTS021270300388
YES
Measurement conditions
Overhaul the engine.
Perform "After-inspection work" of INFOR-
MATION section.
Procedure completed.
Perform "After-inspection work" of INFOR-
MATION section.
2–423
Standard values
Standard values:
3.2 – 3.4 MPa {33 – 35 kgf/
2
cm }
Limit: 2.3 MPa {24 kgf/cm
NO
NO
2
}