When the engine makes abnormal noise during cold start, it is necessary to determine whether the abnormal noise comes from the peripheral parts of the engine or from the inside of the engine. Abnormal sound of motor, generator, belt and other peripheral components. , need to adjust or replace the corresponding accessories to solve. If it is abnormal noise inside the engine, consider whether it is caused by poor lubrication or carbon deposit knocking on the cylinder. It is recommended to check the level and quality of lubricating oil, as well as whether hydraulic tappets, camshafts, connecting rod bearings and other related mechanical parts are worn or damaged. Whether there is more carbon deposit in the combustion chamber and piston ring, etc. The specific situation needs to be judged after hearing the sound. I suggest you go to Beijing Qinhe Automobile Sales Co., Ltd. and ask Zhang Jingwei, an expert from the technical support team of Beijing Automobile Repair Company, to inspect the car on site so as to make an accurate judgment.

I hope the above answers are helpful to you, thank you!

Beijing Auto Repair Company Beijing Qinhe Automobile Sales Co., Ltd.

Hotline: 800-810-1384010-65816687.

Technical Consultation E-mail :jishuzixun@arcb.com.cn