Mg 6 6 is arrogant and unstable?

After the first insurance, the speed of the cold car is unstable after the start, but it is not so obvious after the hot car. According to the 4S shop, when MG 6 is started in a cold start or at a relatively low temperature, the engine will shake, the idle speed will be high, and abnormal noise will occur, accompanied by a large unburned gasoline smell and black smoke. The bearing capacity of the steering gear should not be small, especially when the air conditioner is turned on in a hurry, the compressor will also make a lot of noise, but it will be fine after a while. Because your car oil, gearbox oil and other oil and water are not hot during cold start, and the water temperature is not up, the whole car is cold, just like your body is spinning in the morning. It is good to heat all kinds of lubricating oil when the hot car speed is below 1000. 1. When the idle speed is unstable, the throttle should be considered first. This will happen if the throttle is dirty. You can consider cleaning once. 2. The intake manifold leaks. When air, gasoline vapor and combustion exhaust gas that should not enter enter the intake manifold, the mixture is too rich or too thin, which leads to unstable idle speed of the car. 3. There is a problem with the ignition coil or spark plug of the ignition system, which may also cause such a situation. It is the easiest to check the spark plug, and the carbon deposit on the electrode is clear at a glance. 4. The oxygen sensor of the intake and exhaust system is sometimes broken, which leads to inaccurate intake data and unstable idle speed. @20 19