What Causes the Buzzing Sound in Car Motors?

[CamilleRose]

Car motor buzzing sounds can be caused by exhaust pipe leaks, dirty throttle valves, or engine misfires. Below are detailed explanations and solutions: Exhaust Pipe Leak: Solution: Reduce acceleration speed. When there is a leak in the intake or exhaust pipes, the exhaust rate increases as the vehicle accelerates, resulting in a louder roaring sound. Dirty Throttle Valve: Solution: Adjust the throttle valve to its optimal position. During acceleration, the engine load increases, requiring a higher throttle opening and increased fuel supply. Engine Misfire: Solution: The vehicle experiences insufficient power, accompanied by severe shaking of the exhaust pipe. The lack of power and noticeable exhaust pipe vibrations make it easy to hear the engine's sputtering or thumping sounds.