What Causes Cylinder Scoring?
2 Answers
Engine cylinder scoring can be caused by issues such as engine cooling system leaks or engine oil leakage. The specific causes and consequences of cylinder scoring are as follows: Specific Causes of Cylinder Scoring: The specific causes include engine overheating due to cooling system leaks or water shortage without timely replenishment; severe oil deficiency caused by engine oil leakage or excessive oil consumption; prolonged high-speed or overload operation leading to excessive temperature; and deformation resulting from improper assembly of piston pins or cylinder liners. Consequences of Cylinder Scoring: Engine cylinder scoring refers to the appearance of obvious longitudinal mechanical scratches and abrasions on the inner wall of the cylinder within the movement range of the piston rings. In severe cases, it can lead to adhesive wear, causing difficulties in engine starting or spontaneous stalling.
Last time I overheard some veteran drivers chatting about cylinder scoring. They said it's when scratches appear on the inner walls of engine cylinders. Engine oil is crucial - if the oil quality is poor or deteriorated, leading to insufficient lubrication, the piston and cylinder will directly rub against each other, eventually causing damage over time. High temperatures are another major issue. For example, if the cooling system fails, the radiator leaks, or the fan breaks down, the temperature spikes, making the metal expand and deform more easily, which can scratch the cylinder walls. Additionally, some people have poor driving habits, like flooring the accelerator immediately after a cold start when the oil hasn't yet circulated to all components. This dry metal-on-metal friction is most damaging to the engine. I recommend regularly checking the oil dipstick and keeping an eye on the temperature gauge. Never skimp on maintenance.
