TROUBLE SHOOTING 8-3
WHEN OUTPUT IS INSUFFICIENT
- Clean orifice and needle valve, being very careful not to damage the
nozzle orifice.
- Check nozzle. If defective, replace with new parts.
- Band valve and excessive wear of rings, pistons and liners cause insufficient
compression. Replace with new parts.
- Grind valves.
- Check lube oil system.
- Check to see if lube oil filter is working properly.
- Filter screens or elements deposited with impurities would cause poor
lubrication clean screens.
- Check to see if bearing clearance are within factory specs.
- Check engine timing.
- Adjusting timing DK45:18° (0.3rad), DK50:20° (0.35rad) before top dead
center.
- Adjust to proper valve clearance of inlet 0.2 mm (0.008 in.), exhaust 0.2 mm
(0.008 in.) with engine cold.
- Clean the element every 100 ~ 200 hours of operation.
- Adjust to proper pressure of 150 kgf/cm² (2133.5 psi, 14.7MPa).
- Do not use poor quality fuel for it will cause wear of the pump. Only use No. 2
diesel fuel.
- Check the fuel injection pump element and delivery valve assembly and
replace as necessary.
Carbon stuck around orifice of nozzle piece
Compression is insufficient leaking valves
Overheating of moving parts
Valve out of adjustment
Air cleaner is dirty
Fuel injection pressure is wrong
Injection pump wear
Cause Countermeasures
WHEN COLOR OF EXHAUST IS SPECIALLY BAD
See your DAEDONG dealer.
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