How to repair carbon deposit in BMW 3 series intake valve

There are two ways to clean the throttle of Pacific Auto Network: disassembly cleaning and non-disassembly cleaning. Cleaning the air inlet and throttle generally adopts the method of "hanging bottles" without disassembly and cleaning. When the engine is running, the cleaner is continuously sprayed through the air inlet, but the effect is relatively general. Disassembly and cleaning need to remove the intake assembly and scrub the throttle with chemicals.

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.

How to clean the BMW 3 Series Throttle How to clean the BMW 3 Series Throttle: There are two ways to clean the throttle: disassembly and cleaning. Generally, the air intake and throttle valve are cleaned by hanging bottles, without disassembly and cleaning. When the engine is running, the cleaner is continuously sprayed through the air inlet, but the effect is relatively general. Disassembly and washing need to remove the intake assembly and scrub the throttle valve with chemicals, which is effective but troublesome. Be sure to reset the throttle opening after cleaning, otherwise it may cause the alarm lamp to alarm, because the ECU computer of the car has memorized the opening when there is carbon deposit. If it is not reset, it is actually the same as when it is not cleaned, so remember this.

Effectively remove the carbon deposit and colloid attached to the combustion chamber, throttle valve and intake manifold, and make the oil-gas mixing ratio return to normal. Improve combustion, reduce fuel consumption, increase effective engine power and stabilize idle speed. Harmless to sensors and three-way catalysis, and non-corrosive to metal and rubber products. An effective protective film is produced on the inner wall of the air intake system to ensure the normal operation of all components and reduce fuel consumption.

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.

(Photo/Text/Photo: Pacific Auto Network Q&A called Beast)