When you step on the accelerator, it will make a sizzling sound, and when it is loose, it will be gone. Why?

1. There is a squeak when stepping on the accelerator. Maybe the oil pump of the car is broken, or the release bearing of the clutch is broken. You can go to the repair shop to have it repaired.

2. Check whether the air intake pipe of the engine leaks, whether the air filter element is installed normally, where the sound appears, and whether the belt of the engine is aging, loose or slipping, which will cause the car to make a squeak when braking.

It is necessary to observe where the hiss is. If it appears on the right side of the engine, there is something wrong with the belt of the engine; if it appears on the left side, there is something wrong with the throttle.

4. If the bending sound is at the position of the clutch, you can observe whether the clutch part is worn or not, and you can try to step on the accelerator. If the car rotates normally but does not accelerate, this is a slip phenomenon, mostly because the clutch plate is worn thin, the clutch bearing is broken, and there will be a serrated sound.

Extended data

On the right side of the engine, most of them are generator belts; The word on the left is about the throttle; Most of the front wheel brake pads may be caused by brake calipers, and a small part is stuck. It may be that the piston of the brake caliper was pressed back and crushed during installation, causing a certain degree of jamming.

There is an abnormal sound when stepping on the accelerator, indicating that the gearbox needs to be changed. Throttle, a device for controlling the fuel supply of internal combustion engine. The accelerator pedal is also called the accelerator pedal. It is a part of automobile fuel supply system. By controlling the amount of pedaling, the throttle opening of the engine, the air intake and the oil quantity through the computer, the engine speed can be controlled.