The mixture of Audi A6L2.4 cylinder bank 1 and 2 is too rich. What is the reason?

The reason why the mixture of bank 1 and bank 2 is too rich is that the air flow is not enough, which leads to the mixture being too rich. Or because the upper cover of the air filter supporting the engine is low or the partition plate is installed backwards, or the filter screen is blocked tightly, the oil level is too high and the air flow is too small, resulting in a narrow air inlet.

Solution: Cleaning the throttle can reduce fuel consumption and make the engine flexible and energetic. Reduce the cylinder mixture.

Extended data

Throttle failure is the solution:

1, hard failure. The resistance part of potentiometer is formed by spraying a layer of carbon film on polyester substrate, which is actually a very low-level preparation process with low wear resistance. To put it bluntly, it is not as good as the potentiometer of our usual household appliances. The sliding contact consists of a row of opposing claws made of fine steel. Pay attention to the claw! This is simply worse! In addition, there is no protective agent on the carbon film, and the falling carbon powder leads to poor contact, which is inevitable.

2. Soft fault. Most of the time the throttle is too low. Air flows through the gap of the throttle at high speed (tens to hundreds of meters per second), and the influence of dust on the airflow exceeds the adjustment ability of the throttle.

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