What are the symptoms of cylinder scuffing?
1 Answers
Cylinder scuffing symptoms include: abnormal engine noise, lack of power, exhaust emissions, increased fuel consumption, and difficulty starting after stalling. Cylinder scuffing refers to the appearance of distinct longitudinal mechanical scratches and abrasions on the inner wall of the cylinder within the piston ring's operating range. In severe cases, adhesive wear occurs, leading to difficulties in engine starting or spontaneous stalling. The root cause of cylinder scuffing is the inability to form an oil film between the cylinder wall and the piston rings or piston, resulting in poor lubrication or even dry friction. Cylinder scuffing is one of the common failures in automotive engines, where deep grooves are formed on the cylinder wall, causing the piston, piston rings, and cylinder wall to lose their sealing ability during friction. This results in reduced cylinder compression pressure and loss of power.