How to Determine Cylinder Scoring?

1 Answers
MarianaFitz
07/30/25 6:25am
Cylinder scoring can be identified by abnormal noises, lack of power, exhaust emissions (also known as blow-by), increased fuel consumption, difficulty starting after shutdown, and engine stalling. Below are some relevant preventive measures for cylinder scoring: 1. For new or overhauled engines: Always run them through a proper break-in period. This involves operating under good lubrication conditions, gradually increasing speed from low to high, and load from small to large, strictly following the break-in procedures before putting them into full-load operation. 2. According to the user manual: Correctly select the clearance between the piston skirt and cylinder liner, as well as the end gap and side clearance of piston rings. 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. In winter, preheating measures should be taken before starting the engine.
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