What are the symptoms of cylinder scuffing?

[SanFernando]

Cylinder scuffing may exhibit the following symptoms: 1. Reduced cylinder compression pressure leading to loss of power; 2. Downward leakage of combustible mixture increasing crankcase pressure, potentially causing crankcase explosion in severe cases; 3. Upward oil migration into cylinders resulting in oil burning; 4. Excessive smoke from exhaust pipe; 5. Abnormal engine noise; 6. Engine malfunction or even stalling. The causes of cylinder scuffing include: 1. Insufficient or interrupted cylinder lubrication; 2. Inadequate break-in period followed by immediate high-load operation; 3. Excessive piston temperature with poor lubrication; 4. Severe carbon buildup causing piston rings to stick in grooves, losing elasticity and potentially breaking or leaking combustion gases; 5. Use of low-quality gasoline. Solutions for cylinder scuffing are: 1. Replace pistons and piston rings; 2. Use high-quality engine oil; 3. Clean any foreign objects in the cylinder.