What Causes Motorcycle Oil Burning?

[MartinLynn]

Motorcycle oil burning can be attributed to the following reasons: 1. The oil ring of the piston ring has insufficient elasticity or excessive light leakage, leading to oil burning, which is an issue with the piston ring itself; 2. Excessive clearance between the valve stem and valve guide, or poor sealing by the valve oil seal; 3. Poor cylinder dimensions, excessive ovality, or surface scratches and grooves, preventing the oil ring from scraping off excess oil on the cylinder wall, causing oil to enter the combustion chamber and participate in combustion. Oil burning refers to the situation where engine oil enters the combustion chamber of the engine and burns along with the air-fuel mixture. This phenomenon can lead to rapid damage of the oxygen sensor, increased carbon deposits in the combustion chamber, unstable idling, lack of acceleration power, increased fuel consumption, and excessive exhaust emissions. In severe cases, insufficient engine lubrication can cause irreparable damage or even complete engine failure.