What Causes the Sound of Cylinder Scoring in Cars?

[AbelMarie]

The causes of cylinder scoring sound in cars are: 1. Insufficient or interrupted supply of cylinder lubricating oil; 2. Inadequate running-in period followed by rushed high-load operation; 3. Excessive piston temperature leading to poor lubrication; 4. Excessive carbon buildup causing piston rings to stick in the grooves, lose elasticity, resulting in breakage or gas leakage; 5. Use of low-quality gasoline. Solutions for cylinder scoring include: 1. Replacing pistons and piston rings; 2. Switching to high-quality engine oil; 3. Cleaning foreign objects inside the cylinder. Symptoms after cylinder scoring are: 1. Abnormal engine noise; 2. Loss of power; 3. Presence of exhaust gases; 4. Increased fuel consumption; 5. Difficulty starting or stalling.