Suncool r can only turn 4000 in neutral.

When the car is in neutral, it can only reach 4000 revolutions, which has the following functions:

1, which makes the moving parts of the engine bear great inertial force and affects the reliability and life of the engine;

2, the engine speed rises sharply, and the force on the moving parts will exceed the normal working time;

3, easy to cause cylinder drawing and lava failure;

4. The gear load of the gearbox is too large, which will cause gear damage in severe cases. Throttle, also known as throttle and throttle, refers to the control device that controls the engine power. Neutral refers to the state that the gear lever of the motor vehicle is not put into any forward gear or reverse gear, the gearbox is completely separated from the engine, the manual gear is in the middle position, and the automatic gear is in the N mark.