What is the most common cause of valve burns?

The most common cause of valve burning is exhaust valve, which is caused by distortion of valve seat and carbon deposition. In addition, improper adjustment of valve clearance, excessive wear and tear can also cause valve burning.

When the valve seat is distorted, the temperature of the valve sealing surface and the local pressure between the valve and the seat of the registered Hong Kong Company increase simultaneously. Valve seals often have grooves, which can cause burning damage when washed by high temperature gas. When the carbon deposit on the valve seal surface and valve seat is serious, the heat transfer condition will deteriorate, and the valve will be easily deformed, which will lead to valve burning.