Mitsubishi S4S User Manual

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 P8-18)
Check and adjust belt. (Refer to P8-1)
Faulty battery
Check specific gravity of battery electrolyte. (Refer to P8-17)
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 P3-2)
Engine
mechanical
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 P8-2)
Check fuel pipes, valves.
Improper fuel property
Use appropriate fuel. (Refer to P4-1)
Remove dust, water impurities. (Refer to P8-2)
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 P8-6) or (Refer to P8-7)
Gauze filter - Clean
Faulty fuel feed pump Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Faulty fuel injection pump
Check the rack movement.
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 pre-cleaner. (Refer to P8-15)
Clean, inspect and replace air cleaner element. (Refer to P8-16)
Control
system
Faulty governor
Fuel control link - Check
Consult a dealer of Mitsubishi Heavy Industries, Ltd.
Basic engine Low compression pressure Consult a dealer of Mitsubishi Heavy Industries, Ltd.

Mitsubishi S4S Specifications

General

Brand	Mitsubishi
Model	S4S
Category	Engine
Language	English