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Operation Manual Mitsubishi SS-Series diesel engines
Version 08/2004
TROUBLESHOOTING
ENGLISH
11.2 Problems
For special servicing jobs on your engine, rely on
the expert knowledge of the servicemen and the
service facilities provided by your Mitsubishi
dealer.
Problem Cause Correction
Engine will not start Fuse off Replace
Defective starter switch Repair or replace*
Slow cranking speed Recharge battery
Wrong viscosity grade of oil Change correct oil
Seized running parts Repair*
Air in fuel system Prime
No fuel in tank Refuel
Bad quality fuel Change fuel
Clogged fuel filter Clean or replace
Defective fuel injection pump Repair or replace*
Defective control timer unit Replace*
Clogged air cleaner Clean or replace
Defective starter or relay Repair or replace*
Open electrical circuit Repair
Not enough power Wrong viscosity grade of oil Change oil
Clogged air cleaner Clean or replace
Clogged fuel filter Clean or replace
Defective fuel injection pump Repair or replace*
Defective fuel injection nozzles Repair or replace*
Wrong injection timing Adjust*
Bad quality fuel Change correct fuel
Overheating Flush cooling system and replace parts
Wrong valve clearance Adjust
Poor compression (cylinders, piston, rings, etc.
worn)
Repair or replace*
Table 12 Troubleshooting