Causes of throttle valve damage

Hard faults refer to mechanical damage, and soft faults refer to dirt and maladjustment.

Hard fault: The resistance part of potentiometer is formed by spraying a layer of carbon film on polyester substrate, so the wear resistance is not high, and the falling carbon powder is easy to cause poor contact.

Soft fault: the throttle valve is opened too low, and dust gradually accumulates on the airflow.