How can you tell if an engine has overheated and suffered from cylinder scuffing?

After a cylinder scoring, the water temperature is usually slightly higher. Normally, the warm engine temperature is around 90 degrees. If it exceeds 100 degrees, that's abnormal. Another indicator is the engine fault light. Cars that have had cylinder scoring and been repaired often lack power and may misfire, causing the engine warning light to frequently turn on. Many car dealers just reset the computer codes and sell the cars.