Why does the motorcycle make a buzzing sound but fail to start?

[DelJosie]

When a motorcycle fails to start and makes a buzzing sound, it is usually due to the starter relay. This situation is mostly caused by insufficient battery power, poor contact of the battery wiring, or inadequate grounding of the ground wire. In rare cases, it may be due to a faulty starter relay, while the possibility of a faulty starter motor is relatively low. Additional information: 1. A motorcycle is a two-wheeled or three-wheeled vehicle driven by a gasoline engine and steered by handlebars. It is lightweight, flexible, and fast, widely used for patrol, passenger and cargo transportation, and also serves as sports equipment. 2. The working principle of a motorcycle ignition system is to cooperate with the sensor source to determine the spark timing of the spark plug. When the high-voltage coil amplifies the voltage and supplies it to the spark plug for ignition, the spark ignites the mixture of fuel and air, causing an explosion that pushes the piston to move up and down in the cylinder, thereby starting the motorcycle engine.