Why does the air leakage in the automobile intake pipe lead to the mixture concentration being too thin?

Air leakage in the engine air intake system will lead to insufficient air intake and engine power. If the intake pipe leaks, it should be repaired immediately, otherwise it will affect the normal operation of the engine. The engine of a car is fueled by a mixture of fuel and air. If the air intake is insufficient, it will lead to inaccurate air-fuel ratio.

The treatment and inspection methods of air leakage in the air intake system are as follows:

1, the air intake system leaks, so it is necessary to check whether the air intake system leaks and whether the pipeline is aging or damaged, and replace the pipeline in time;

2. When the intake manifold leaks air, the pressure in the intake manifold will change. Because the intake air does not follow the normal channel, the pressure detection will become abnormal, the mixture will often be too thin, and the intake air volume will increase too much. Because the fuel injection quantity is mainly determined by the intake air quantity, the fuel injection quantity will increase, the idle speed will increase, or the irregular intake air will appear high and low in the oil leakage place.

3. The other is that the computer receives the idle state through the throttle sensor, but the idle speed is not within the specified range, and the computer automatically adjusts the operation of the idle motor, and then there will be a phenomenon of high and low. If the air leakage is not serious, the idle speed will only be slightly higher, and there will be no deviation. If the air leakage is serious, the throttle sensor needs to be replaced.

4. There is actually a very convenient way to check the tightness of the air intake system, that is, to fill the whole air intake with smoke. If there is a leak, you can see it with the naked eye. This rapid leak detection method has certain requirements for equipment. If there is no professional equipment, other types of smoke can be used instead, such as dry ice and steam. Just replace the relevant sealing ring.