What are the symptoms of a dirty car throttle?

[LilyFitz]

Symptoms of a dirty car throttle: 1. When accelerating, you may feel the throttle sticking, becoming heavy, with slow vehicle acceleration. The engine RPM rises slowly when pressing the throttle at idle, showing delayed response. When releasing the throttle while driving, the vehicle speed drops immediately; 2. It affects the precision and smoothness of engine air intake. A noticeable issue is that it may cause shaking or even stalling at idle, as well as unsmooth acceleration when pressing the throttle. Reasons for a dirty throttle: 1. Driving environment, poor air filter performance, or high dust levels in the surrounding environment; 2. Low-quality engine oil with high evaporation rate; 3. Generated by oil vapor and impurities in the crankcase; 4. After turning off the engine, the throttle cannot seal completely, allowing some dust to be sucked in.