Top Ten Common Diesel Engine Faults and Solutions

Fault 1. Diesel engine smoke

Solution:
1. The turbocharger fails to work;
2. Poor sealing of valve components;
3. The precision coupler of the fuel injection nozzle fails to work;
4. Excessive wear of camshaft components.

Fault 2. The diesel engine emits white smoke

Solution:
1. The precision coupler of the fuel injector fails;
2. Diesel engine burns oil (ie supercharger burns oil)
3. Excessive wear of the valve guide and valve, the oil leaks into the cylinder; 4. There is water in the diesel.

Fault 3. When the load is high, the exhaust pipe and the supercharger turn red: Solution

1. The precision coupler of the fuel injection nozzle fails;
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 and the nozzle do not work well.
5. The valve and seat ring are poorly sealed.

Fault 4. The power loss of the diesel engine is relatively large when it is working

Solution:
1. Excessive wear of cylinder components;
2. The precision coupler of the injector fails to work;
3. The PT oil pump fails to work;
4. The timing mechanism is not working well;
5. The supercharger fails to work.

Fault 5. Diesel engine oil pressure is too low

Solution:
1. The matching clearance between the bearing bush and the crankshaft is too large, that is, the bearing bush and the crankshaft wear too much:
2. Excessive wear of various bushings and shafting;
3. Oil leakage from cooling nozzle or oil pipe;
4. The oil pump fails to work;
5. The oil pressure sensor fails.

Fault 6. Diesel engine water temperature is too high

Solution:
1. The water pump is damaged;
2. The thermostat is damaged;
3. The fan belt and water pump belt are too loose;
4. The water tank is too dirty.

Fault 7. Diesel engine burning tile phenomenon

Solution:
1. The machine fails to work without the oil pump;
2. The bearing bush clearance is too large, causing the oil pressure to be too low;
3. The diesel engine lacks water and causes high temperature.

Fault 8. The exhaust gas of the diesel engine is large or there is white smoke discharged from the exhaust pipe

Solution:
1. Excessive wear of cylinder components;
2. There is water in the oil pan;
3. There is a phenomenon of pulling the cylinder.

Fault 9. Diesel engine speed is unstable

Solution:
1. The diesel engine has a fault with excessive power loss;
2. The electronic actuator of the PT pump is faulty with the internal parts of the PT pump;
3. The electronic speed control board fails to work;
4. The speedometer fails.

Fault 10. There is diesel oil in the oil pan

Solution:
1. The O-ring of the injector is damaged;
2. Poor atomization of the injector, dripping oil;
3. Improper installation of the injector.

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