What Causes the Buzzing Sound When Accelerating?
3 Answers
The reasons for the buzzing sound when accelerating are: 1. Unstable engine operation; 2. Carburetor malfunction or delayed ignition timing; 3. Excessive engine carbon buildup or poor filtration; 4. Insufficient lubrication of engine components by the oil. The function of the throttle is to control the cylinder's filling volume by adjusting the carburetor's throttle opening and to regulate the fuel flow through the fuel regulator, determining the engine's output power and generating thrust. Solutions for the buzzing sound when accelerating include: 1. Check if the engine operation is unstable; 2. Inspect the carburetor for malfunctions or delayed ignition timing; 3. Determine if there is excessive carbon buildup in the engine or poor filtration; 4. Check the oil lubrication condition.
The buzzing noise when I step on the gas is really frustrating. Thinking back to when I drove my old car, it had the same issue. The sound could come from several places: the intake system, like if the air filter is too clogged, the engine struggles to breathe and makes a buzzing noise; if there's a leak in the exhaust system, a hole in the pipe or loose connections can also cause this; worn or loose drive belts can produce unusual noises under acceleration due to increased friction; a malfunctioning fuel pump often buzzes from the rear of the car. Checking is simple: open the hood and see if the air filter is dirty—cleaning or replacing it might solve the problem; then step on the gas and listen for the direction of the noise—if it's from the front, it could be the belt or intake, while a rear noise might indicate a fuel pump issue. Don’t delay like I did—later, my engine overheated, and the repair costs doubled. It’s better to visit a repair shop early; fixing small issues promptly saves money and hassle.
The buzzing sound when I refuel my car reminds me of my friend's modified car. It could be caused by loose intake modifications leading to abnormal air flow; or an exhaust system leak, such as a loose exhaust pipe after modifications making noise; it's also common when the air filter is too dirty, affecting the engine's normal air intake; a loose drive belt slipping during acceleration can produce a buzzing sound; an aging or faulty fuel pump can also make similar noises. Simple solutions: first check the condition of the air filter, clean or replace it if necessary; listen to the location of the sound, if it becomes more obvious as you press the accelerator, check the exhaust and drive system. I once ignored it after modifying the engine, resulting in insufficient power affecting driving. It's best to go to a professional shop for inspection immediately.
