What are the symptoms of a burnt throttle body?

[VonLucy]

The symptoms of a burnt throttle body mainly include: unstable engine idle speed, persistently high idle speed, difficulty in engine starting, especially cold starting; unstable or no idle speed; difficulty in engine starting; insufficient power, poor acceleration performance, and unstable operation; black smoke from the car's exhaust pipe, and increased fuel consumption. Below is relevant information: 1. The throttle body is a controllable valve used to regulate the air entering the engine. After entering the intake pipe, it mixes with gasoline (the mixing location varies depending on the car model) to form a combustible mixture that participates in combustion and work. 2. Proper and regular throttle body cleaning can ensure the normal operation of the engine. However, cleaning must be done in moderation. Excessive cleaning can lead to premature failure of the throttle body. Frequent cleaning gradually removes the special coating inside the throttle body's inner chamber. Without the coating, the inner chamber is more prone to oil buildup, creating a vicious cycle that ultimately results in failure.