What Causes the Buzzing Sound When Accelerating?
2 Answers
The reasons for abnormal noise when accelerating are as follows: 1. Loose dashboard or console: During operation, the engine needs to intake a large amount of air. If the air is not filtered, suspended dust particles in the air will be drawn into the cylinders, accelerating the wear of the piston assembly and cylinders. Larger particles entering between the piston and cylinder can cause severe "cylinder scoring." The air filter, located in front of the carburetor or intake pipe, filters out dust and sand particles from the air, ensuring sufficient and clean air enters the cylinders. 2. Clutch malfunction: Additionally, try pulling out the oil dipstick and checking if the abnormal noise persists when accelerating. If it doesn’t, the issue may be with the clutch. The turbocharger generates compressed air flow noise during operation, and the engine noise increases when revving or pressing the accelerator pedal deeply. When accelerating, press the pedal gently and avoid flooring it suddenly, as this can cause such abnormal noise.
I've encountered the issue of a hissing sound when stepping on the gas pedal quite a few times, mainly due to air leaks. The most common cause is aging, cracked, or loose vacuum hoses in the intake system, which results in high-speed air intake and produces a hissing noise. Another possibility is an exhaust system leak, where there might be cracks in the exhaust pipe or muffler. If the sound comes from the engine compartment, it could be due to loose or worn drive belts, such as the air conditioning belt or alternator belt, which generate noise when rubbing during operation. Occasionally, sensor components like a faulty throttle position sensor can produce electromagnetic hissing sounds. I recommend first identifying the source of the sound—if it's from the front, it might be a vacuum issue, while if it's from the rear, it could be related to the exhaust. Early inspection is crucial because these leaks can affect engine efficiency, increase fuel consumption, and in severe cases, damage other components, leading to higher repair costs. The safest approach is to take it to a professional repair shop for a thorough check using diagnostic tools.
