What Causes Cylinder Scoring While Driving?

[DeMalia]

Causes of cylinder scoring while driving include ineffective engine oil, excessively high water temperature, and prolonged high-speed engine operation. Below are detailed explanations: Ineffective Engine Oil: Using low-quality engine oil or failing to change it for extended periods can lead to camshaft wear, resulting in cylinder scoring. Excessively High Water Temperature: An excessively high engine water temperature causes the piston to heat up significantly, leading to inevitable expansion. As the piston expands, the clearance between it and the cylinder wall decreases, eventually causing the piston to seize in the cylinder, resulting in cylinder scoring. Prolonged High-Speed Engine Operation: High-speed operation refers to revolutions per minute (RPM) nearing the redline, around five to six thousand RPM. When the engine operates at excessively high speeds, the load increases, and even the water temperature rises, significantly increasing the likelihood of cylinder scoring.