What should I do if the engine is abnormal when Geely Yuan Jing S 1 cold car starts?

There are many factors that can make the engine sound louder. First of all, determine whether there are other abnormal noises or just loud sounds like normal work. It is best to test multiple speeds. Generally, it may be carbon deposit in engine, air intake and throttle. In addition, when the maintenance period is approaching, the engine noise will increase because of the weak oil wear. In addition, it is normal for the cold car to make a clicking sound when starting, which is the working noise of the valve. After idling for a period of time, this sound will decrease, so you can use it safely. When the engine beeps, it is necessary to check the use of various pulleys and tensioners. For the noise of driving, it is rare to go to the store to test the vehicle.