Why does the pressure drop from the turbocharger to the throttle in the Passat Lingyu?

[SebastianRose]

Possible causes and solutions for pressure drop from the turbocharger to the throttle in the Passat Lingyu are as follows: Possible causes: Intake system leaks or blockages can lead to this issue. The stepper motor in the idle control section, dirty throttle valve body, or air leaks. Abnormalities in sensors such as atmospheric pressure, temperature, throttle position, etc., leading to incorrect data. Blockages or obstructions can cause this. Abnormal electric fuel pump or fuel filter blockages due to various reasons, leading to restricted fuel delivery. Quality faults in the fuel injectors themselves, or blockages caused by foreign objects, poor sealing, aging rubber rings, etc., can all contribute to the problem. Solutions: If it's a new car, there shouldn't be issues with idle control components, as turbocharged direct-injection vehicles have high combustion requirements. The first step should be to clean the fuel system.