7. Too large clearance between main bearing and
connecting rod bearing.
7. Check and replace when necessary.
8. Improper adjustment of pressure adjusting valve on
oil filter.
9. Oil pressure gauge damaged
10. Wrong assembling of oil filter seat packing
F: ENGINE OVER HEAT
Trouble Cause Remedy
1. Cooling system out of order
2) Too much deposit in water passage
3) Fan and water pump belt too loose.
4) Space between radiator and fan is not suitable.
5) Water inlet and outlet
2) Add alkaline solution (750g alkaline in I0 L water),
operating 4
8 hours and discharged, then use clean
water to clean the passage.
3) Adjust the tension of belts or change belt when
necessary.
2. Fuel injection delayed or nozzle leaks fuel.
2.Adjust the fuel delivery advance angle or repair
nozzle.
3. Oil insufficient causes oil pressure too low and
temperature too high.
4. Valve phasing is incorrect.
5. Thermostat out of order.
6. Engine running overload for a long period.
G: ENGINE EXHAUST ABNORMAL SMOKE.
1. Exhaust blue smoke (oil in cylinder)
1) Piston rings, cylinder liner worn out or piston
2) Intake or exhaust valve guide hole worn out.
3) Too much oil in oil sump.
2. Exhaust white smoke (Engine in cold condition with bad fuel
atomization in low load condition. )
1) Fuel injection pump delivery too much fuel.
2) With bad fuel atomization, fuel pressure is too low
3) Fuel delivery too late
4) Cylinder compressing pressure is low.
2) Inspect injection pressure or replace fuel
injector when necessary.
3) Adjust fuel advance angle
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