What about engine noise and jitter after Reiz 7 thousand kilometers?

Hello: For the above-mentioned vehicle use phenomenon, this kind of fault is obtained by comprehensive analysis of maintenance cases and current vehicle conditions. It is recommended to go to the repair shop to check the throttle voltage and see if there is colloidal carbon deposit. Because the electronic control technology of vehicles is widely used now, if there is some colloidal carbon deposit near the throttle, the auxiliary air will be insufficient when the engine is cold started, which will cause the fluctuation of engine idle speed and sound change. If the test is true, cleaning is common.