What are the symptoms of a car throttle air leak?

[StLily]

The symptoms of a car throttle air leak include: unstable engine idle, jerking while driving, insufficient power, occasional stalling after stopping, and the air leak area may blacken the engine cover. Throttle air leaks are usually caused by leaks between the throttle body and the intake manifold interface. This interface is typically secured with screws and clamps, and improper installation can easily lead to air leaks. When cleaning the throttle, it is crucial to reinstall it carefully after removal, as negligence can easily cause air leaks. Modern cars use electronic throttles, which function like the engine's throat. The throttle controls the engine's air intake, while the accelerator pedal does not directly control fuel injection but rather the throttle opening. When the accelerator pedal is pressed, the throttle opening increases, allowing more air to enter the engine. Sensors detect the increased airflow and then increase fuel injection accordingly. Over time, the throttle can accumulate carbon deposits, prompting many car owners to periodically remove and clean it. If the throttle is not reinstalled carefully, it can easily lead to air leaks.