Fuel Consumption Is High; Table 11-6 Fuel Consumption Is High - Mitsubishi S4S-DT Operation & Maintenance Manual

Chapter 11 TROUBLESHOOTING

Fuel consumption is high

Cause
Faulty fuel injection nozzle
Faulty fuel injection timing
Fuel system
Improper fuel property
Fuel leakage in fuel pipes and
injection pipes.
Cooling
Overcooled
system
Insufficient amount of air
Inlet and
exhaust
systems
Increase resistance of exhaust air.
Low compression pressure
Basic engine Faulty valve timing
Rapid wear of sliding parts
11-6

Table 11-6 Fuel consumption is high

Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Use appropriate fuel.
Check faults and retighten fuel pipes and injection pipes.
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Check radiator.
Check control system.
Thermostat - Inspect
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Check turbocharger.
Clean, inspect and replace pre-cleaner.
Clean, inspect and replace air cleaner element.
(Refer to P8-16)
Check intake air pressure and leakage of intake air.
Check intake air temperature and ventilation device.
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Check turbocharger.
Check exhaust pipes and silencer.
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Remedies
(Refer to P4-1)
(Refer to P8-13)
(Refer to P8-14)
(Refer to P8-14)
(Refer to P8-15)