What are the symptoms of a damaged motorcycle cylinder head?

[MacAngela]

The symptoms of a damaged motorcycle cylinder head are as follows: Significant increase in noise: Due to excessive heat causing piston expansion, it will create intense friction with the cylinder block, resulting in abnormal engine noise. Vibration and black smoke emission: Engine vibration becomes very noticeable, and in severe cases, black smoke may be emitted. Piston expansion will undoubtedly hinder the movement of the engine's piston. When friction between the piston and cylinder increases, it causes severe engine vibration. Overheating of the radiator: Due to increased movement resistance, the pressure inside the engine cylinder becomes very high, which can easily lead to engine overheating.