Qichen D60 cold car abnormal sound?

The cold car is abnormal. I heard Zitz's voice when I started driving in the morning. When the car was hot, it was gone. What happened? The cold car is abnormal. I heard Zitz's voice when I started driving in the morning. When the car was hot, it was gone. What happened? Cold start cars are like this, with high speed and loud engine noise, which is normal. The normal running water temperature of the engine is about 95 degrees. At first, the water temperature was low. In order to raise the water temperature, the engine will increase the fuel injection and speed, so it will feel a loud idling sound, so don't worry too much. If it is useful to you, please adopt it, thank you ~ ~ There are several reasons for the abnormal start-up sound of refrigerated trucks. The belt of automobile accessory wheel is too loose, which leads to the increase of load and abnormal sound of the belt when the door is refueled. Carbon deposition on the throttle valve of the automobile leads to the blockage of the fuel filler door, and the idle speed control valve and throttle valve are too dirty. There is a mixture of carbon deposit and engine oil in the intake of automobile engine, which causes the valve to hum when it suddenly fills up. Solution: 1 Check generator belt, compressor belt, booster pump belt, etc. If it is loose, please replace it or tighten it. 2. Check the accelerator of the car. If it is dirty, clean it and match it. 3. Clean the oil mixture and carbon deposit in the air inlet, and use special air inlet cleaner. 3. Check whether the accelerator pedal spring is loose or tired, and if so, replace it. When the cold car starts, the water temperature is low, and the engine oil is not fully lubricated, so the engine sound will be loud, the idle speed will be high and the jitter will disappear. When the engine is running, the water temperature will rise slowly, the oil will be lubricated, the sound will be reduced, and the idle speed will reach the normal speed. If you are satisfied, please use the vehicle to cool down. Cold weather, engine power consumption temperature and lubrication are not in place, which are all abnormal working conditions. At this time, fuel consumption, noise and abnormal speed are normal phenomena, and the hot car is not enough @20 19.