What is Cylinder Scoring?

[LaJohnny]

Engine cylinder scoring mostly occurs due to insufficient lubrication from engine oil or when the oil deteriorates and fails to provide proper lubrication. Below are some preventive measures related to cylinder scoring: 1. For new or overhauled engines: Always run them through a break-in period. This means operating under good lubrication conditions, gradually increasing the engine speed from low to high and the load from small to large, strictly following the break-in procedures before putting the engine into full-load operation. 2. According to the instruction manual: Correctly select the clearance between the piston skirt and the cylinder liner, as well as the piston ring end gap and side clearance. Additionally, during repairs, ensure proper piston alignment and maintain the dimensional accuracy of the cylinder liner. 3. Maintain coolant temperature: Keep the coolant temperature within the normal range of 70°C to 95°C to prevent engine overheating. Preheating measures should be taken before starting the engine in winter.