Why does the motorcycle have a throttle sound?

The valve sound is mostly caused by the gap between the valve rocker arm and camshaft, so it is best to repair it in time, otherwise it may increase the wear between them, and the excessive valve gap will also affect the intake and exhaust, resulting in a decline in power. In addition, if the valve rocker arm and camshaft are worn, it will make the sound louder, so it is best to check it.