Why does a car have an exhaust sound while driving?

If you hear a "sizzle" noise while driving, and this is the engine belt.

The abnormal sound caused by the problem, because the "zizi" abnormal sound is mostly the aging of the 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 the engine timing belt.

Generator belts, circulating water pump belts, air conditioning belts, booster pump belts, etc., and 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.

As long as the car is driving normally, there will definitely be a sound in the exhaust, if there is no sound in the exhaust, then the vehicle should also be scrapped, if the sound is particularly loud during driving, it is recommended to check the muffler, exhaust pipe, is it broken? Hope it helps, hopefully.

This is because there is a problem with the mixing ratio of the vehicle, so the fuel can not be burned in the engine compartment, but is re-burned at the exhaust pipe position, this needs to check the position of the vehicle's air intake system, first check whether the vehicle's air filter is too dirty, I hope to help you!

It is normal for the vehicle to have an exhaust sound while driving, and there is no problem. Of course, if the sound is too loud, then you need to go to the repair shop or 4S shop to check.

The reason for the loud fart sound of the car exhaust pipe is: the mixture of the car engine is too thick and the combustion is not complete.

The solution is: if the mixture is too concentrated and the combustion is incomplete, you need to go to the 4S shop or repair shop of the car in time to adjust the combustion, which can solve the problem of abnormal noise in the exhaust pipe of the car.

It is necessary to exclude the muffling factor of the exhaust pipe of the whole vehicle, because the automobile engines are multi-cylinder engines (mostly four-cylinder), and the exhaust process of each cylinder is carried out in connection with each other, so there will be no intermittent sudden sound of motorcycles. However, there is still no shortage of people in life who see individual vehicles idling, and the exhaust pipe will still sound suddenly.

The muffler and exhaust pipe are damaged.

There is a heat shield between the exhaust pipe and the floor, which may be caused by the aging of the heat shield.

It could be a carburetor and platinum malfunction or a late ignition moment. If the ignition moment is too late, when the engine piston is very close to the top dead center, the spark plug starts to ignite, the mixture combustion lags, the combustion is incomplete, when the piston goes down and even until the exhaust valve is opened, the mixture is still burning, the expansion of the combustion chamber volume and the lag expansion of the gas cause the exhaust pipe to hum.

In addition to the mechanical vibration caused by the loose exhaust pipe, as long as the noise caused by the flow of exhaust gases is rhythmic, and this rhythm is related to the speed of the engine.

There are many reasons for the sound of the exhaust pipe, including the aging of the exhaust pipe, the failure of the three-way catalytic converter of the car, the failure of the ignition system of the car, and the abnormal concentration of combustible mixed gas.

1. Exhaust pipe aging:

When the car is too old, the exhaust pipe is prone to aging, which will affect its looseness, fall or hole, and eventually cause the exhaust pipe to ring. This situation is fairly simple to solve, as long as the exhaust pipe is re-fixed or replaced.

2. Failure of automobile three-way catalytic converter:

If the three-way catalytic converter of the car is faulty, it cannot purify the exhaust gas normally, which affects the blockage and squeezing of the exhaust gas inside it and causes the exhaust pipe to make a sound. In this case, you should go to a repair shop or 4S shop to ask a professional to check and repair.

3. Automobile ignition system failure:

If the ignition system of the car is faulty, the fuel can not be burned normally in the cylinder, and the car will have symptoms such as weak acceleration, easy stalling, and ringing of the exhaust pipe.

4. The concentration of combustible mixed gas is abnormal

If the concentration of gas mixture in the engine is too high or too low, it will basically cause abnormal combustion, which will affect the sound of the exhaust pipe. This situation is quite complicated, and you need to go to a repair shop or 4S shop to ask a professional to check it.

This is because there is a problem with the mixing ratio of the vehicle, so the fuel can not be burned in the engine compartment, but is re-burned at the exhaust pipe position, this needs to check the position of the vehicle's air intake system, first check whether the vehicle's air filter is too dirty, I hope to help you!

As long as the car is driving normally, there will definitely be a sound from the exhaust, if there is no sound from the exhaust, then the vehicle should also be scrapped, if the sound is particularly loud during driving, it is recommended to check.

Muffler. Exhaust pipe.

Is it broken? Hope it helps, hopefully.

Hello. Your car has an abnormal sound in the exhaust pipe when driving, many cars have encountered this situation, either there is a huge abnormal noise when driving, or there is a sudden acceleration on the road, there will be a lot of different abnormal noises, this situation, many car owners are very worried, thinking that their car has a big problem. The reason for this is simple, in fact, it is not a big problem, let's take a look.

When the general engine is working, the work done in the combustion process will more or less produce an appropriate amount of water vapor, and a large part of the water vapor condenses into water droplets in the rear exhaust muffler through the exhaust pipe, this phenomenon is particularly obvious in the case of low temperature, which can be said to be a manifestation of the intake mixture in the cylinder to form full combustion and complete exhaust purification efficiency. So it's a normal phenomenon, don't worry, if the engine is not working abnormally, please don't hesitate to use it. Other questions about the sound of the exhaust pipe will need to be checked on site, and an accurate judgment can only be made after a comprehensive analysis according to the situation and the characteristics of the sound produced and **, in which case it may be necessary to check the exhaust pipe if the sound is good.

First of all, a soft connection is adopted between the exhaust pipe and the engine, and after a period of use, the result of soft connection damage may occur;

Second, the connection between the exhaust pipe and the frame consists of several fixed rubber rings, which can check whether the rubber rings are damaged or the rubber aging problems;

Finally, there is a seal between the exhaust pipe and the soft joint, the engine and the soft joint, which can be checked for damage.

In addition, it is possible that the owner is not paying attention during use, and through the rutted road, the exhaust pipe will be broken, causing the exhaust pipe to leak and make a sound, but this is usually very unlikely. There is also a situation where the exhaust pipe blows up. Exhaust pipe explosion, as the name suggests, is the burning of the unburned combustible mixture in the exhaust pipe to the ** sound, usually accompanied by sparks, often known as exhaust pipe explosion.

Through the above analysis, I believe that car owners will be able to solve their own problems.

The exhaust pipe of the car is blocked, you can stop the car and go to the part of the exhaust pipe to see what is wrong.

In this case, it may be that your exhaust pipe silencer is damaged, so you will hear the abnormal sound of the exhaust pipe while driving.

This situation may be because your exhaust pipe fixing screws are loose, so the anomaly occurs when there are bumps on the road.

Causes of loud exhaust pipes:

1. If the sound is very loud and obvious, it means that the exhaust pipe is very likely to be discharged, and the exhaust pipe is discharged, that is, the fuel is burned in the exhaust system, resulting in an occasional sudden increase in exhaust pressure, and a sudden sound occurs, which may be caused by the engine ignition advance angle is too small; The mixer is too thin and is not successfully ignited in the cylinder; The mixture is too thick, and it is not successfully ignited in the cylinder, etc.

2. When idling, the engine speed is low, and the airflow speed of the exhaust system is fast and slow, if the sudden sound is not very loud, it is normal.

3. Severe idle jitter accompanied by a serious sudden sound, which needs to be checked.

If it is not repaired in time, it is likely to cause some bigger problems, and if it causes bigger problems, it is not only about repairing these exhaust pipes, so when your car exhaust pipe encounters some problems.

It can be repaired in time, or it can be modified, so that it looks more convenient and time-saving, and many parts of each car are very important, and every car, every small part is quite important.

It may be caused by the blockage of the air filter element of the intake, or the blockage of the exhaust pipe, which is usually caused by the blockage of the three-way catalytic converter, or the rupture of the exhaust interface cushion and exhaust pipe. If we find that the exhaust pipe of the car is particularly loud, then we should fix it.

If the exhaust pipe hum is caused by the aging of the exhaust pipe, the exhaust pipe needs to be refixed or replaced; If it is caused by the failure of the three-way catalytic converter, it should be repaired to the maintenance plant; If it is caused by a faulty ignition system, the ignition system of the car should be checked in detail.

Here are the causes and solutions for the exhaust pipe to hum:

1. Exhaust pipe aging:

When the car is too old, the exhaust pipe is prone to aging problems, which leads to looseness, detachment or holes, and finally causes the exhaust pipe to make abnormal noise. This situation is relatively simple to solve, and only needs to be re-fixed or replaced by the exhaust pipe.

2. Failure of automobile three-way catalytic converter:

If the three-way catalytic converter of the car fails, it cannot purify the exhaust gas normally, resulting in the exhaust gas being blocked and squeezed inside it and causing abnormal sound of the exhaust pipe. In this case, you should go to the repair shop or 4S shop to ask a professional to check and repair.

3. Automobile ignition system failure:

If the ignition system of the car fails, the fuel can not burn normally in the cylinder, and the car will have symptoms such as weak acceleration, easy stalling, and abnormal sound of the exhaust pipe, which should also be checked in detail for the ignition system of the car.

4. The concentration of combustible mixed gas is abnormal

If the concentration of gas mixture in the engine is too high or too low, it will cause abnormal combustion, resulting in abnormal sound of the exhaust pipe. This situation is more complicated, and you need to go to the repair shop or 4S shop to ask a professional to check.

Dear, this question is up to me, it takes a little time to type, please be patient, thank you!

Hello, I have seen your inquiry, please wait for a moment and answer it for you immediately.

If there is no problem with the three-way catalytic converter, then you need to check the position of the exhaust pipe connection to see if there is any air leakage, and you need to check the position of the muffler behind the exhaust pipe to see if there is any damage in the muffler. These two locations need to be checked specifically. If there is no problem, it is caused by poor combustion of the engine, and it is necessary to clean the carbon deposits of the engine, clean the throttle and fuel injector, replace the spark plug, and clean the three-way catalytic converter.

The reasons why the buzzing sound of automobile exhaust becomes louder: 1. The exhaust pipe is aging. 2. Failure of automobile three-way catalytic converter:

3. Automobile ignition system failure:4. The concentration of combustible mixed gas is abnormalExhaust pipeIn order to reduce vibration and noise, facilitate installation and extend the life of the exhaust muffler system, it is installed between the engine exhaust manifold and the muffler.

A buzzing sound could be an exhaust pipe leak.