What is the intermittent jitter of Buick Hideo idle speed?

The original reason of Buick Hideo's intermittent idling jitter is that the throttle is too dirty or too much carbon is deposited. It is suggested that the owner check the working conditions of spark plugs, high-voltage lines and ignition coils, which may also be caused by the high engine temperature. Buick Hideo is the fourth Buick brand model based on GM's new global platform after New LaCrosse, New LaCrosse and Angkewei, which originated from Opel Xinyate. In terms of body size, Yinglang is a high-end mid-size car with the length, width and height of 44 19mm, 18 14mm and 1487mm respectively, and the wheelbase is 2685mm.