11-7
Chapter 11 TROUBLESHOOTING
Engine oil consumption is high
Overheating
Table 11-7 Engine oil consumption is high
Cause Remedies
Fuel system Faulty fuel injection timing
Check fuel injection pump couplings.
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Lubricating
system
Oil leakage to the outside of engine
Check oil leakage.
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Engine oil viscosity too low Use appropriate oil viscosity. (Refer to P5-1)
Engine oil temperature is high.
Check amount of engine oil and lubrication system. (Refer to
P3-9)
Check oil cooler and oil thermostat
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Cooling
system
Overheating
Check radiator. (Refer to P8-15)
Check control system.
Thermostat - Inspect
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Inlet and
exhaust
systems
Spread oil to intake part
Check oil leakage to the turbocharger.
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Wear of valve operating system Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Basic engine Wear of sliding parts Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Control
system
Increase in load
Check control system and governor controller.
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Table 11-8 Overheating
Cause Remedies
Cooling
system
Low coolant level
Check coolant leakage
Check coolant level. (Refer to P3-10)
Faulty water pump operation Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Faulty thermostat operation Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Faulty radiator operation
Check and clean radiator and radiator filler cap. (Refer to P8-
15)
Control
system
Increase in load
Check fuel injection pump rack stroke.
Check control system and governor controller.
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Basic engine Rapid wear of sliding parts Consult a dealer of Mitsubishi Heavy Industries, Ltd.
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