The car makes a sizzling sound when it drives?

There is a sizzling sound when the car is driven, it may be that the brake pads are worn thin, the brake drum is in direct contact with the vehicle, and the friction between the metals. A brake pad needs to be replaced.

According to the normal driving situation of the car, the front brake pads need to be replaced after about 3-50,000 kilometers, and the rear brake pads can be replaced after about 6-10 kilometers. But this is only a relative standard, each car driving environment is different, individual driving style is different, the degree of wear is not the same, you can observe the thickness of the brake pads to judge whether to replace.

Generally, the thickness of the new brake pad is about centimeter, and there is a protrusion at both ends of the brake pad, about 3 mm, if the thickness of the brake pad is the same as this logo, it needs to be replaced immediately.

How brake pads work:

The working principle of brakes mainly comes from friction, using the friction between brake pads and brake discs (drums) and tires and the ground to convert the kinetic energy of the vehicle into heat energy after friction to stop the car. A good and efficient braking system must be able to provide stable, sufficient and controllable braking force, and have good hydraulic transmission and heat dissipation capacity.

In order to ensure that the force exerted by the driver from the brake pedal can be fully and effectively transmitted to the master cylinder and each sub-cylinder, and to avoid hydraulic failure and brake recession caused by high heat. The braking system on the car is divided into two categories: disc and drum, but in addition to the cost advantage, the efficiency of drum brakes is far less than that of disc brakes.

If you hear the abnormal sound of "Zizi" in the process of driving, and this is the abnormal sound caused by the problem of the engine belt, because the abnormal sound of "Zizi" is mostly the aging of each belt group of the engine, or the belt is too loose caused by the problem of the tensioner, the friction abnormal sound, belt slippage, etc., if there is a similar "Zizi" abnormal sound, then look for the major belt groups and tensioners inside the engine, such as engine timing belt, generator belt, circulating water pump belt, air conditioning belt, power pump belt, etc. The problem that causes this abnormal noise is the abnormal sound of the engine belt, which is caused by the smooth grinding surface of the joint surface of the belt and the pulley. It usually occurs when the engine speed changes rapidly, and sometimes the belt rings when the load of the attachment driven by the belt increases.

How to solve the problem of abnormal noise of engine belt.

1. Check whether the accessories driven by the belt are damaged, stuck, loose or the power of the accessories has increased.

2. Replace the belt, or use 100 gauze to polish the joint surface of the pulley and the belt (light grinding is fine).

3. The temporary solution can be to drop 1 2 drops of oil on the joint surface of the belt and the pulley (it will not affect the belt slippage).

If it is the generator belt that rings and the headlights are more obvious, you have to take off the generator belt, turn the motor pulley to see if the generator rotates smoothly, if the generator is normal, you can check whether the battery is not stored power, because the battery storage is not good will increase the load of the generator.

It could be that there is a problem with the engine belt. The tightness of the engine belt should be checked first, try to clamp the transmission belt with your fingers, and then twist it, note that the operation should be carried out when the engine is cool, and the twist angle should generally be below 90 degrees, otherwise it will be adjusted.

The wiper is a bit loud, if it's too big or like chopping vegetables, it's time to change the wipers! As for the central control, I didn't think there was any abnormal noise.

The reasons for the sizzling sound when the car is driven are: 1. The engine support is not installed due to loose bolts on the base; 2. If the belt is loose or the belt is aging, you can replace it with a new belt; 3. The brake pads are thinned, the brake drum is in direct contact with the vehicle, if there is a metal friction sound when braking, it may be that the brake pads are worn to the raised position, and the brake disc will make an abnormal noise, which needs to be replaced in time. In addition, if the car does not start for a while, the oil will return to the oil pan, and the valve chamber will have less oil, because the valve chamber lacks the sealing and lubrication of the oil, so the car will hear a sizzling sound under the car when it starts.

What is the reason for the sizzling sound of the car? The reason why the car has a sizzling sound when driving is that the brake pads are worn to the limit, the brake drum is in direct contact with the vehicle, and the car needs to be replaced for about 3 to 50,000 kilometers before the front brake pads are driven according to the normal driving conditions, and the rear brake pads can be replaced after about 6 to 10 kilometers.

Each car has a different driving environment and a different degree of wear, and you can judge whether to replace it by observing the thickness of the brake pads. Generally, the thickness of the new brake pads is about centimeters, and there is a protrusion at both ends of the brake pads, about 3 mm, if the thickness of the brake pads is the same as this logo, it needs to be replaced immediately. 2019