What Causes the Zizzing Noise When Pressing the Throttle at Low Speed?

1 Answers
Joanna
07/29/25 1:22pm
Here are the specific reasons for the abnormal noise when pressing the throttle at low speed: Exhaust system failure: Noise caused by exhaust gasket leakage or exhaust pipe perforation and leakage. Intake system failure: Noise caused by air intake manifold or throttle body leakage or poor sealing. Engine chassis failure: Abnormal noise from inside the engine or surrounding accessories, or loose chassis components causing noise or resonance interference. Transmission internal failure: Noise caused by insufficient lubrication or abnormal wear during driving.
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