What Needs to Be Replaced for Engine Cylinder Scoring?

[ParkerAnn]

For engine cylinder scoring, the following components need to be replaced: 1. Replace the cylinder liner. If the roundness or cylindricity tolerance of the cylinder liner exceeds the allowable range, the sealing between the piston and cylinder liner will be significantly reduced. High-temperature gas in the cylinder can leak downward, damaging the oil film between the piston and cylinder wall, leading to cylinder scoring. 2. Replace or maintain the air filter. If the air filter is not sealed properly, its filtration efficiency decreases, allowing dust, sand, and other impurities from the air to enter the cylinder, causing abrasive wear. Tests show that inhaling just a few grams of dust daily can increase cylinder liner wear by more than 10 times. 3. Replace or install the piston pin retaining ring. If the piston pin retaining ring is missing, falls off, or breaks, the piston pin may protrude during operation, easily scratching the cylinder wall and causing gas leakage into the crankcase.