11-2
Chapter 11 TROUBLESHOOTING
Troubleshooting
The starter does not crank or cranks slowly, resulting in start failure
The starter cranks, but the engine does not start
Table 11-1 The starter does not crank or cranks slowly, resulting in start failure
Cause Remedies
Electrical
system
Faulty wire connection
Check the DC fuse.
Check wiring connection between battery, starter and starter
switch
Insufficiently charged battery
Check alternator. (Refer to P8-19)
Check and adjust belt. (Refer to P8-2)
Faulty battery
Check specific gravity of battery electrolyte. (Refer to P8-18)
Charge battery
Change battery.
Faulty starter or starter relay
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Lubricating
system
Oil viscosity too high Use appropriate engine oil. (Refer to P5-1)
Excessive oil
Check amount of engine oil and lubrication system. (Refer to P3-
9)
Basic engine
Rapid wear of sliding parts, or
locked
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Table 11-2 The starter cranks, but the engine does not start
Cause Remedies
Fuel system
Run out of fuel, blocked pipe
Inspect fuel tank, supply fuel, bleed air. (Refer to P8-5)
Check fuel pipes, valves.
Improper fuel property
Use appropriate fuel. (Refer to P4-1)
Remove dust, water impurities. (Refer to P8-5)
Fuel leakage in fuel pipes and
injection pipes.
Check faults and retighten fuel pipes and injection pipes.
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Clogged fuel filter
Inspect and replace fuel filter. (Refer to P8-7)
Clean gauze filter. (Refer to P8-6)
Faulty fuel feed pump Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Faulty fuel injection pump
Check the rack movementx
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Faulty fuel injection nozzle Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Air intake
system
Insufficient amount of air
Clean, inspect and replace air cleaner element. (Refer to P8-17)
Control
system
Faulty governor
Check the linkage operation. (Refer to P3-10)
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Basic engine Low compression pressure Consult a dealer of Mitsubishi Heavy Industries, Ltd.
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