When the excavator engine emits blue smoke, people often do not take this fault to heart, which also indirectly causes the engine fault to become more and more serious, until there is no way to do. What is the blue smoke from the excavator engine?
1. Blue smoke when starting the engine in cold state
With the increase of engine working time, the blue smoke phenomenon gradually disappears, so it is determined that the engine oil is burned in cold car. This is generally due to the aging of the valve oil seal, which makes the oil enter the cylinder through the valve oil seal and burn, producing blue smoke.
2. Blue smoke when engine accelerates
If the engine emits a lot of blue smoke when the load suddenly increases and the engine throttle rises during operation, it can be preliminarily determined that the sealing clearance between the piston and the cylinder barrel in the engine cylinder is too large. This phenomenon is due to the fact that when the engine is working at a high throttle, the oil enters the cylinder through the oil pan, through the large gap between the cylinder and the piston or piston ring, and participates in combustion, producing a large amount of blue smoke. In this case, it is necessary to disassemble and inspect the engine, and then judge whether the reason is the excessive clearance between the piston and the cylinder, or the problem of oil channeling caused by the matching of piston rings.
3. The engine emits a lot of blue smoke at any time
The engine emits a large amount of blue smoke under any working condition, which proves that the engine has been seriously worn and must be overhauled. If it is not repaired in time, it is very likely to cause engine cylinder pulling, or even engine scrapping, resulting in more serious losses.
Engine failures are generally complicated and difficult to handle, and involve a lot of precision parts, so neither the operator nor the boss dare to disassemble and inspect relevant parts easily. It is recommended to find a professional excavator maintenance technician for inspection when disassembling relevant parts.
