What is the smoke on the motorcycle?

It is mainly caused by lax sealing of valve oil seal, excessive clearance between piston ring and cylinder, and damage of cylinder gasket, which should be repaired in time. Blue smoke is caused by the machine starting to burn mixed oil. Determine whether your car is four-stroke or two-stroke. If it's two punches, it's okay. If it's the fourth rush, go to the maintenance station and ask for a replacement immediately. Because there is something wrong with your piston ring. Can't seal the oil. It must be solved as soon as possible. When not running in, a slight smoke is not a fault. This is not the oil in the muffler.

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Consequences of oil leakage from valve oil seal:

1. Oil leakage from the valve oil seal will burn the engine oil that has penetrated into the combustion chamber due to the lax sealing of the valve oil seal, and blue smoke will generally appear in the exhaust; If it lasts for a long time, the valve is easy to produce carbon deposit, which leads to lax valve closing and insufficient combustion;

2. At the same time, it will also cause carbon deposition in the combustion chamber and fuel nozzle or blockage of the three-way catalyst; It will also cause the engine power to decrease, the fuel consumption to increase obviously, and the related parts to be damaged, especially the spark plug working condition to decrease obviously.

3. Oil seal is a seal used by machinery to seal oil (oil is the most common liquid substance in transmission system, and also refers to the general meaning of liquid substance). The oil seal separates the part of the transmission part that needs lubrication from the output part to prevent the lubricating oil from leaking.

References:

? Piston ring-Baidu encyclopedia