How to Tell if the Throttle Body is Dirty?

1 Answers
OKeira
07/29/25 4:46pm
Vehicle idle is somewhat shaky, especially when just starting the engine, the engine vibration is more obvious, indicating that the throttle body is somewhat dirty. Additional information: 1. Weak acceleration: If you feel weak acceleration while driving, not as smooth and quick as before, it may indicate a dirty throttle body. Of course, it might not necessarily be the throttle body; it could also be an issue with the fuel system. 2. Increased fuel consumption: If you notice a significant increase in fuel consumption while driving, excluding issues like vehicle overload or prolonged low-speed driving, the throttle body might be dirty. 3. Inspect the throttle body: During routine vehicle maintenance, you can inspect the throttle body by opening its inlet and carefully examining it. This method is relatively accurate. 4. Cleaning the throttle body: The throttle body can be cleaned without disassembly, but the intake sealing parts must be thoroughly cleaned. The idle air control valve must be removed to be cleaned properly. There are pros and cons to both disassembling and non-disassembling cleaning methods for the fuel injectors. Generally, service stations recommend non-disassembling cleaning to avoid unnecessary waste. Note that most modern vehicles have electronic throttle bodies, which need to be reset after cleaning; otherwise, the vehicle may experience severe shaking.
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