What should I do if Passat air intake system leaks?

Solution to air leakage in Passat air intake system: The air leakage in Passat air intake system mainly checks the intake manifold from the throttle to the engine, including the vacuum tube of the brake booster. There is a pipe under the air cabin, which is probably not plugged in properly. The problem of air leakage in the air intake system must be inspected by professionals on the spot to know where the specific problem lies. The following is an introduction to the working principle of the air intake system: 1. When the engine is working, the driver controls the throttle opening through the accelerator pedal, changes the air intake and controls the engine operation. 2. The air entering the engine is filtered by the air filter to remove impurities such as dust, and then flows through the air flow meter, enters the power room along the throttle passage, and is distributed to each cylinder through the intake manifold. 3. When the engine is idling, part of the air bypasses the throttle valve and enters the cylinder through the additional air valve or idling control valve.