What is the reason for the car buzzing?

The transmission housing is damaged, and the transmission housing and bearing seat hole are worn and deformed for a long time. The noise of this kind of training is the biggest when you are engaged in low gear. With its engagement in the high gear, the noise gradually decreases and the direct gear is the smallest.

Due to the fragmentation of individual tooth surfaces, the impact during meshing is caused. When this gear is engaged, there will be strong impact and vibration, which will cause abnormal sound of the transmission housing.

Common faults of vehicles

Unable to start or difficult to start.

The phenomenon that the engine can't start may be that the ignition switch is turned on without any signs of starting, the starter is noisy but can't turn, the starter can turn but can't drive the engine, or the starter can drive the engine but can't start. The phenomenon of starting difficulty may be that the engine rotates slowly or the noise is uneven when the engine rotates.

The starting difficulty may occur in freezing weather or extremely hot weather, or at room temperature, or it may be that the cold car is difficult to start for the first time and the hot car will start normally when it is hot.