Precursors of Motorcycle Cylinder Scoring?

1 Answers
VanAniyah
07/30/25 4:34am
Motorcycle cylinder scoring is preceded by abnormal engine noises. Motorcycle Cylinder Scoring: Motorcycle cylinder scoring refers to the phenomenon where the cylinder wall becomes rough due to insufficient lubrication, causing excessive contact with the piston. When this occurs, not only does the motorcycle's power decrease, but severe oil burning issues may also arise. Normally, a thin oil film lubricates and seals the space between the cylinder wall and piston. However, if the engine suffers from inadequate lubrication or poor oil quality, the piston and cylinder wall are forced into excessive contact, inevitably leading to cylinder damage and piston wear. Consequences of Cylinder Scoring: Deep grooves form on the cylinder wall, causing the piston and piston rings to lose their sealing ability against the cylinder wall. This results in reduced cylinder compression pressure and loss of engine power. The root cause of motorcycle cylinder scoring is the inability to form an adequate oil film between the cylinder wall, piston rings, and piston, leading to poor lubrication or even dry friction. Motorcycles, powered by gasoline engines and steered via handlebar-controlled front wheels, are lightweight, agile, and fast two- or three-wheeled vehicles widely used for patrol, passenger and cargo transport, as well as sports equipment.
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