When Zotye sr9 new car is driving, the second gear engages with the third gear. I don't know whether the gearbox or the engine has abnormal noise. How to solve the problem? The 4s shop couldn't find t

When Zotye sr9 new car is driving, the second gear engages with the third gear. I don't know whether the gearbox or the engine has abnormal noise. How to solve the problem? The 4s shop couldn't find the problem and said it wasn't a problem. There are three problems with abnormal noise of vehicles (except for loose screws)

One: the engine is abnormal, that is, the throttle is dirty.

Two: Abnormal sound of gearbox:

1: The friction plate inside the gearbox is seriously worn and the surface is uneven, which leads to frustration when contacting!

2. The plunger in the valve body is seriously worn, which leads to the plunger not running smoothly in the valve body!

I hope I can help you!