HS code compliance for customs

How to clean the car engine (detailed explanation of the cleaning method of the car engine) The HS code compliance for customsvehicle engine is one of the most important parts of the whole vehicle, because it directly affects the performance and safety of the whole vehicle. However, long-term use and lack of maintenance may cause carbon accumulation, oil scale and other problems inside the engine, thus affecting the efficiency and life of the engine. Therefore, cleaning the vehicle engine is one of the important measures to protect the engine and extend the life of the engine.This article will introduce the methods and steps of car engine cleaning in detail. I. Choose the cleaning method. There are mainly two ways to clean the vehicle engine: physical cleaning and chemical cleaning. 1. Physical cleaning Physical cleaning is the use of high-temperature water vapor or compressed air to remove oil and carbon inside the engine. The advantage of this method is that it will not produce chemicals harmful to the engine, but it requires professional equipment and skills to operate and clean. Therefore, physical cleaning is generally carried out by automobile repair shops. Two. Chemical cleaning Chemical cleaning is the use of specific chemical reagents to clean the oil and carbon inside the engine. This method is easy to operate and can be cleaned by yourself at home, but if you don't master the correct method, it is easy to cause damage to the engine. Therefore, before chemical cleaning, you must read the reagent instructions carefully and master the correct usage method.II. Preparation work Before cleaning the engine, the following preparations need to be carried out: 1. Equip the necessary tools. Such as rubber gloves, flashlights, spray guns, etc. Two. Park the car in a well-ventilated place and keep the engine shut down. 3. Protect the basement of the vehicle or the floor of the garage to prevent the cleaning liquid from flowing into the ground or the environment. Four. Open the lid of the water tank and relax the cooling water. 5. Place an oil leak plate under the base of lubricating oil and engine oil lubricating oil. III. Internal cleaning of the engine. Next, follow the following steps to clean the internal engine: 1. The vehicle is in a natural state (i.e. unstarted state). First, the battery has been hooked away. After the oil is relaxed, the shower gun is sprayed into the air-permeable position of the radiator, so that the cleaning liquid rushes straight into the radiator for about 20 cm, and the inside of the radiator is cleaned.Two. Then use a spray gun to spray the cleaning solution into the engine oil port until the cleaning solution appears in the oil outlet. Then pull the starter cover by hand and disassemble the oil pump pressure gauge to exert pressure on the engine, and then you can follow the pressure into the oil line network and each machine part, ... until the oil liquid becomes cleaning liquid. 3. Close the position of the oil outlet, remove the cleaning liquid at the entrance and exit of the upper oil pipe at the position of the oil pump, drain all the cleaning liquid, and then remove it back. Four. Rinse the oil network with water until the water outlet discharges the water. 5. After pouring out the residual cleaning liquid in the engine, re-fill the clean oil, close the oil port, and the vehicle can operate normally. IV. External cleaning 1. First of all, use a high-pressure spray gun to rinse the dust and oil outside the engine, and pay attention not to aim the spray gun at the generator bearing, engine fan blades and other vulnerable parts.Two. Then use a cloth or sponge to dip the car wash liquid and carefully wipe the parts around the engine, including the generator, supercharger, exhaust pipe, etc. 3. After wiping, rinse the outside of the engine again with a high-pressure spray gun to ensure that all foam and car wash liquid are thoroughly washed away. Four. Wipe the external parts with a clean towel to make them completely dry. Summary: Car engine cleaning is one of the important measures to protect car engines. When cleaning, you should choose the correct cleaning method and master the correct operation method. Note: The vehicle must be in a shutdown state during cleaning. For physical cleaning, the operator must have professional skills and equipment. For example, the car repair shop must be completed by the repair shop or professionals.

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