One. Diesel generator cannot start

1. The battery on the diesel generator is dead

2. The starter motor is damaged

3. Halfway damage

4.Fuel shutoff valve failure

5. The controller is damaged

6. The control line is broken or the fuse is open

7. Other mechanical failures of the diesel generator set, such as shaft or broken shaft

two. Difficult to start diesel generators

1. Low battery

2. Start motor drag

3. Poor fuel quality or too high label

4. The battery connection of the diesel generator set is loose

5. The ambient temperature is too low (need to warm up to the required temperature before starting)

6. The diesel pump is not working properly or the connection screws are loose and slipping

7. Pump core is stuck

8 Diesel cylinder or tile burning

three. No voltage or unstable voltage of diesel generator set

1. The pressure regulating plate of the diesel generator set is damaged

2. The diode is damaged

3. The connection between the voltage regulator and the ball is loose or the fuse is open.

4. The large electric ball bearings of the generator set are seriously worn out, causing damage to the PMG stator and rotor, the excitation stator, and the main rotor

5. The voltmeter is broken or the connection line is broken

four. Diesel generators have no frequency or frequency instability

1 No frequency caused by no voltage of generator set

2. Speed governor is damaged

3. The ACT / MPU connection line of the diesel generator set is broken or has poor contact

4. Pump core is worn or stuck

5. MPU gap is too big or bad

6. Diesel tube rupture / air intake air

Fives. Oil pressure alarm or shutdown of diesel generator set under normal oil pressure

1.The oil pressure (alarm / stop) switch is damaged

2.Alarm / stop switch wiring grounding

3. The controller is damaged

six. Diesel generator oil pressure is low

1. The oil pressure probe or oil pressure gauge is damaged

2. Insufficient oil / oil level is lower than “L” position

3. The oil pump is seriously worn and the pump oil is not enough

4. The maintenance cycle has passed or the oil grid is too dirty

5. The oil circuit is blocked

6. Engine oil deterioration or viscosity (model) is wrong

7. The oil cooler is blocked and the cooling effect is not achieved, making the oil thin

8. Spindle bushing / link bushing / all related bushes are seriously worn and exceed the standard.

9. The oil cooling nozzle is damaged

Seven. Diesel generator set water temperature alarm when water temperature is normal

1. Water temperature (alarm / shutdown) switch is damaged

2.Alarm / stop switch wiring grounding

3. The controller is damaged

Eight. Diesel generator set with high water temperature

1. Water temperature probe or water temperature meter is damaged

2. Water tank is short of water

3. The water tank fins are too dirty

4. Fan belt is loose or broken

5. The cooling air vent of the water tank is blocked

6. Loose or broken water pump belt

7. Water pump damaged

8. Diesel generator set overload operation

9. The external circulating water pump or cooling tower fan of the water-cooled unit is damaged

10. Water shortage in cooling tower or blocked pipe

11. Thermostat is damaged

nine. Black smoke from diesel generator set operation

1. Style is too dirty

2. The turbocharger is damaged

3.Injection nozzle precision coupling failure, poor atomization

4. Excessive wear of the valve train (valve / seat / rocker / ram, etc.)

ten. Exhaust gas from diesel generators during operation

1. Large piston ring wear (caused by normal wear and caused by low oil pressure or poor oil quality)

2. Cylinder liner wear exceeds the limit (same reason as above)

3. Diesel engine has cylinder pull phenomenon (overload, high water temperature and poor oil quality)

4. Water in oil pan

XI. Increase in engine oil

1. there is water in the oil pan

2.Diesel in the oil pan

12. There is water in the oil pan of the diesel generator set (the oil turns white)

1. The outdoor smoke pipe or muffler is broken (the oil does not turn white but increases)

2. Intercooler rupture

3. Cylinder liners have trachoma (the unit has been used for too long or is not corroded by antirust water)

4. Cylinder liner rubber ring aging

5.Diesel pull cylinder (cylinder liner rupture)

6. Cylinder head rupture or water blocking perforation

Thirteen. There is diesel in the oil pan of the diesel generator set (the oil becomes thinner)

1. The fuel shut-off valve is not tightly worn and closed (the stationary inlet / the fuel tank outlet is higher than the nozzle)

2. Poor atomization of the fuel injection nozzle (dropped under working conditions)

3.Aging of rubber nipple

4. The oil cup is broken

5.STC valve is not working well

6.The copper sleeve of the grease nipple is damaged