The excavator may encounter blue smoke of the excavator engine, black smoke of the excavator engine and white smoke of the excavator engine in use. What is the reason for the engine smoke?
Komatsu excavator engine blue smoke fault
The blue smoke of the engine indicates that the engine burns engine oil, and the lubricating oil enters the combustion chamber to participate in combustion, and the engine oil consumption increases
Check diagnosis:
There is a lot of blue smoke at the start, which indicates that there is a problem with the valve oil seal or valve guide and guide hole. If the oil pressure is too high, check the engine lubrication system. Measure the pressure of each cylinder with a pressure gauge and check the tightness of the cylinder
Black smoke fault of excavator engine
The black smoke of the engine indicates that the mixture is too rich, the fuel is too much and the pollution is incomplete or the spark is weak
Detailed explanation of reasons:
The air filter is blocked and the intake air is too little. The valve clearance is not standard. The main reason is that the intake valve clearance is too small. The timing teeth are wrong and the oil supply time is incorrect. The oil supply volume of the diesel pump is too large, the oil nozzle is not materialized well, and the oil nozzle drips. The diesel filter is too dirty, and sometimes the same phenomenon occurs. The hydraulic pressure holds the car, causing black smoke
Excavator engine white smoke fault
Check diagnosis:
It is normal to emit white smoke when starting in winter. Some cylinders of the ignition system are not ignited. The compression pressure of the cylinders is too low or the temperature is too low and the combustion is incomplete
