What Causes the Engine to Buzz When Accelerating?

[LaKaleb]

Here are the reasons for abnormal engine noise when accelerating: Exhaust pipe leakage: When there is a leak in the intake or exhaust pipe, the vehicle's exhaust rate increases during acceleration, resulting in a loud roaring sound. Dirty or clogged throttle body: During acceleration, the engine load increases, requiring a higher throttle opening. If the throttle opening does not reach the optimal position due to dirt or clogging, it can lead to poor air-fuel mixture ratio, causing noise during acceleration. Engine misfire: An engine misfire refers to one or more cylinders not functioning properly, typically manifesting as reduced vehicle power, severe shaking of the exhaust pipe, and a clear "popping" or thumping sound from the engine.