Wei Zhi V2 has a high idle speed. Is it normal?

According to the above-mentioned vehicle running phenomenon, it is normal for the engine speed to fluctuate or be slightly higher when braking. Because, this reason is mainly because the air in the negative pressure chamber of the brake booster pump is instantly replenished into the intake manifold, which leads to the increase of engine speed. However, if the fluctuation value is too large, it is recommended to go to the repair shop to check the brake booster and idle speed control system. If the booster leaks air or the idle speed control valve deposits carbon, the above phenomenon will occur.