12-4 DK55
WHEN COLOR OF EXHAUST IS SPECIALLY BAD
Fuel governing device is bad
Fuel is of extremely poor quality
Nozzle is bad
Combustion is incomplete
- Contact dealer for repairs.
- Select good quality fuel oil. No. 2 diesel only.
- If necessary, replace with new nozzle.
- Cause is poor atomization, improper injection timing, etc. because of trouble in
injection system or in poor valve adjustment, or compression leakage, poor
compression, etc. Check for the cause and repair.
Cause Countermeasures
WHEN ENGINE SUDDENLY STOPS
- Check the fuel tank and refill if necessary.
- Also check the fuel system for air or leaks.
- If necessary, replace with a new nozzle.
- Check amount of engine oil with oil level gauge.
- Check lubricating oil system.
- Check to see if element inside the lubricating oil filter has become old and
clogged. If necessary, replace with new element.
- Check to see if the engine bearing clearances is within factory spec.
Leak of fuel
Bad nozzle
Moving parts are overheated due to
shortage of lube oil or improper lubrication
Cause Countermeasures
IMPORTANT
When the engine has suddenly stopped, decompress the engine by the decamp. and turn the engine lightly by
pulling on the fan belt, if the engine turns easily without abnormalities, the cause of the trouble is usually lack of
fuel or bad nozzle.
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