In case of diesel generator failure, do not operate blindly. Common failures can be handled according to the following methods.
(1) What are the parts that need to be replaced for a diesel engine (taking Cummins as an example) during routine medium repair?
1. Piston rings.
2. Intake valve.
3. Exhaust valve.
4. Intake valve seat.
5. Inlet and exhaust valve guides.
6. The cooling nozzle of the valve.
7. Upper repair kit.
8. Supercharger repair kit.
9. Valve keys.
10. Connecting rod shells.
11. Oil pan gasket.
12. Fuel injector adjustment and accessories.
13. PT oil pump adjustment and accessories.
14. Cylinder liner.
(2) What are the causes of black smoke from diesel engines?
1. Turbocharger fails to work.
2. The valve assembly is poorly sealed.
3. The fuel injector or high-pressure oil pump precision coupling fails to work.
4. The camshaft assembly is excessively worn.
5. The intercooler is too dirty and the air intake is insufficient.
6. The rubber ring of the fuel injector is poorly sealed.
7. The cylinder assembly pulls the cylinder.
8. The quality of diesel is poor.
9. The air filter is blocked.
(3) What are the causes of white smoke from diesel engines?
1. The precision coupling of the fuel injector or high-pressure oil pump fails.
2. The diesel engine burns engine oil (that is, the supercharger burns engine oil).
3. The valve guide and valve are excessively worn, and the oil leaks into the cylinder.
4. There is water in diesel fuel.
5. The copper sleeve of the fuel injector leaks into the cylinder.
6. The piston ring is excessively worn or the oil ring is installed reversely, and the cylinder burns oil.
7. The exhaust gas breathing tube has not been cleaned or blocked for a long time.
(4) What are the reasons for the redness of smoke exhaust pipe and supercharger under high load?
1. The fuel injector or high-pressure oil pump precision coupling fails to work.
2. The camshaft, follower arm assembly and rocker arm assembly are excessively worn.
3. The intercooler is too dirty and the air intake is insufficient.
4. The supercharger fails to work.
5. The valve assembly is poorly sealed.
(5) Under what circumstances, the power loss of diesel engine is large when it works?
1. The cylinder assembly is excessively worn.
2. The fuel injector or high-pressure oil pump precision coupling fails to work.
3. PT oil pump fails to work.
4. The timing mechanism is not working properly.
5. The supercharger fails to work.
6. The intercooler is too dirty.
7. The valve assembly is poorly sealed.
8. The diesel compartment and air compartment are too dirty.
(6) What is the cause of low diesel engine oil pressure?
1. The fit clearance between the bearing shell and the crankshaft is too large, that is, the bearing shell and the crankshaft are too worn.
2. Excessive wear of various bushings and shafting.
3. The cooling nozzle or oil pipe leaks oil.
4. The oil pump fails to operate.
5. The oil pressure sensor fails.
6. Dirty oil cooler causes excessive oil temperature.
7. Poor oil quality.
(7) What are the reasons for the high water temperature of diesel engine?
1. The water pump is damaged.
2. The thermostat is damaged.
3. Fan belt and water pump belt are too loose.
4. The water tank is too dirty (internal or external).
(8) Under what circumstances will the diesel engine burn?
1. The oil pump fails to operate.
2. The bearing bush clearance is too large, causing the oil pressure to be too low.
3. The diesel engine suffers from high temperature due to water shortage.
4. The oil grille is blocked.
5. Poor oil quality.
(9) What are the reasons for the phenomenon of high turbidity gas under the diesel engine or white smoke discharged from the lower turbid gas pipe?
1. The cylinder assembly is excessively worn.
2. There is water in the oil pan (the cylinder head is cracked, the injector copper sleeve is water, the cylinder liner is worn out, the cylinder liner rubber ring is leaking, and the cylinder block is leaking).
3. There is cylinder pulling.
(10) What causes the unstable speed of diesel engine?
1. The diesel engine has the fault of excessive power loss.
2. The electronic actuator of PT pump is excessively worn and the internal parts of PT pump are faulty.
3. EFC electronic speed control board fails to work.
4. The speed measuring head is damaged.
5. The diesel grid is too dirty.
6. Diesel pipeline leaks.
Jiangsu Starlight Electricity Equipments Co.,Ltd. is a diesel generator set factory integrating product development, production, sales and installation. The company has successfully developed a series of diesel generator sets with high-tech technology, and has formed industrial production. The main products are: silent series, mobile trailer series, container series diesel generator sets. For more details, please contact us with sales@dieselgeneratortech.com.
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