What Causes the Abnormal Noise When Pressing the Accelerator?
2 Answers
The abnormal noise when pressing the accelerator is usually caused by the fuel pump or related components, and it could also be due to damage to the clutch release bearing. Below is relevant information about the accelerator: 1. Definition: In the internal construction of an engine, the device on an internal combustion engine that controls the fuel supply is called the accelerator. 2. Function: The accelerator can manipulate the throttle opening in the engine, thereby controlling the amount of combustible mixed gas, which changes the engine's speed and power, allowing the car to accelerate or decelerate to meet driving needs. 3. Electronic Accelerator: The electronic accelerator uses position sensors to transmit the degree of pedal depression, achieving electronic control of the throttle. The use of electronic accelerators is very precise and avoids issues of mechanical wear.
After driving for so many years, I've encountered quite a few cases of strange noises when stepping on the accelerator. The most common issue is loose or aged belts, especially the alternator belt and air conditioning compressor belt - they tend to squeal when the RPM increases. Another frequent culprit is worn engine mount bushings, which serve as vibration dampeners; once cracked, they'll creak when the engine works harder. An often overlooked problem is leaking exhaust pipe gaskets, which produce a puffing sound during rapid acceleration. Lastly, turbocharged cars should be checked for stuck wastegates, while supercharged models might have issues with belt tensioners. Never ignore these sounds, as minor noises can escalate into major repairs. My advice is to first locate the source using a stethoscope, then visit a repair shop promptly if necessary - safety always comes first.
