How often does BMW's throttle have to be cleaned?

BMW's throttle is cleaned every 5000 kilometers, which is the cleaning method of BMW's throttle. First, loosen the fastening screw of the air cleaner top cover and the metal clip of the throttle body with a screwdriver to separate the air cleaner top cover from the throttle body. Then it is best to clean the electronic throttle by two people, one is responsible for stepping on the throttle and the other is responsible for cleaning. Spray carburetor cleaner on a clean rag, and then wipe it carefully with a rag.

The BMW 3 Series throttle is generally cleaned once every 40,000 kilometers. Throttle is a device on the engine intake system, which is a circular steel plate with a shaft in the middle and controlled by throttle cable.

When the engine is running at low speed, due to the small throttle opening and the small air intake (flow), some extremely fine dust (not filtered by the air filter) and exhaust gas in the engine valve chamber will be deposited on the throttle and the air intake of the idle speed control valve, resulting in the problems of slow throttle response (reduced actual air intake) and unstable idle speed. The computer controls fuel injection through the signal sent to him by the throttle potentiometer. Generally, electronic throttle is more accurate. With the opening of the throttle, the fuel injection quantity is constantly changing. When there is carbon deposit on the throttle plate, his intake volume will change, which is inconsistent with the instructions of the computer, leading to easy flameout.

Five functions of regular daily cleaning:

1, which can effectively clean and dredge the glue and carbon deposit of the fuel nozzle and keep the fuel system clean.

2. Reduce tail gas emission and save fuel, thus effectively protecting the oxygen sensor and the three-way catalytic converter.

3. It can help prevent symptoms such as knocking, unstable idle speed and poor acceleration caused by colloid and carbon deposition.

4. It can eliminate the carbon deposit on the valve seat, lubricate the valve and valve guide, improve the sealing performance, restore the cylinder pressure and increase the power.

5. It can remove the carbon deposit in the combustion chamber, lubricate the upper area of the cylinder, reduce the wear of the piston ring and prolong the service life.

(Photo/Text/Photo: Ask the Beast in the Q&A) Weilai ES8 Weilai ES6 Ask the World M5 Weilai EC6 Xpeng Automobile P7 Chuanqi GS8 @20 19.