Excuse me, the steering wheel is shaking when the car is idling. Do you need to add some oil when starting, otherwise it will not be easy to turn off the engine?

Resulting in one or more cylinders not working, which will also lead to idle jitter. Check the spark plug. If the ceramic part of the spark plug is cracked, also check whether the ignition module is normal.

Solution: Check whether there is too much carbon deposit in the spark plug and replace the spark plug.

2. The engine has serious carbon deposition.

The most common thing is that dirty throttle or faulty throttle will lead to idle jitter. The main reason of dirty throttle is that there is carbon deposit at the joint between throttle valve plate shaft and throttle body, which leads to inaccurate valve opening, so idling jitter will occur.

So we can clean the throttle first. If it doesn't shake after cleaning, it means the throttle is dirty. If it still shakes after cleaning, it may be that the throttle assembly is damaged and the valve needs to be replaced. As a reminder, since all vehicles now use electronic throttle, it is necessary to adjust the idle speed again after cleaning the throttle.

Solution: clean the oil circuit, check whether there is carbon deposit in the idle motor, and clean it.