How to solve the noisy car engine?

Almost every car that has been driven for a long time will increase the engine noise and vibration. This phenomenon is easy to explain, the engine will age, and with the aging will definitely bring problems of one kind or another.

1. Most of the vibrations are pots with machine foot glue.

Although it is true that the engine body will wear out a little with the increase of years of use, and the accuracy of various fits inside the engine will be reduced, this is far from the level that will cause significant vibration. The engine vibration is intensified, and in most cases it is a problem with the foot glue.

The so-called foot glue is called engine shock absorber seat. In fact, it is a few rubber blocks that are padded between the engine and the metal frame. Because the engine is running at high temperature for a long time, and rubber itself is very sensitive to high temperature, so the aging of the foot rubber is inevitable.

The solution is very simple, just replace the foot glue. But this operation requires lifting the engine.

2. There is basically no solution to the abnormal noise in the interior.

In addition to the sound of the engine, the most common thing in old cars is all kinds of strange interior noises. Some of the abnormal noises can't be distinguished at all. In most of these cases, it is a problem of abnormal noise in the interior.

Why does the interior make abnormal noise? The interior of a car is made up of many parts, including seats, panels, equipment, and miscellaneous things. These things are basically all screwed or glued in place.

The glue hardens over time, and after hardening, friction between the parts makes a sound. The place where the screws are fixed will be loose for a long time, and there will be abnormal noises if they are loose.

3. Increased wind noise? Check the door seals!

The increased wind noise is most likely to be the fault of the door seals. Quite simply, one of the main functions of door seals is to seal the vehicle and prevent excessive wind noise from entering the cabin. The door seal is also made of rubber, which will harden after a long time, and of course it will not be able to stop the air leakage after hardening.

This is relatively easy to solve, distinguish which side of the door is the most noisy, and replace all the door sealants on that side. It also directly replaced all the sealant strips on all doors of the whole car.

However, there is a certain chance that the wind noise is still so loud after the change, then it is very likely that the sound insulation glue has hardened in places such as wheel arches, engine compartment firewalls or trunks.

First, the effect of firewall sound insulation and engine compartment cover sound insulation is more obvious, but the project is huge, and the man-hour cost is more expensive, so you must be psychologically prepared. Second, only do the engine compartment cover sound insulation, which has an effect, but it is not as obvious as the first item! 3. Check the engine and make sure the engine is normal.

If the engine is normal, change the oil, and the sound of the engine will be much more pleasant!! Fourth, noise first.

The loud engine noise is caused by carbon deposits, and it is necessary to clean the carbon deposits in the engine combustion chamber, fuel injectors, intake valves, and throttle valves, and finally pour the exhaust cleaner into the fuel tank to clean all the carbon deposits in the gasoline circuit.

Many car owners complain that the noise of their cars is getting louder and louder, what is the reason?

There are generally the following treatment methods for engine noise:

1. The rubber of the machine foot is aging or loose. The foot glue is the rubber block between the engine and the frame. Its function is to reduce the vibration and cushioning of the engine when working, and to have the effect of fixing the engine.

Once these feet are aged or loosened, the engine will shake, and the faster the speed, the louder the shaking will be. Solution: Tighten or replace the rubber on the feet.

2. Improper use of engine oil. If the oil viscosity does not match the engine, carbon deposits are easily generated, resulting in louder engine noise. On the other hand, if the viscosity of the oil is too low, it will cause insufficient lubrication and wear of engine parts to produce abnormal noise; If the oil is too viscous, the engine will be overloaded and will also produce noise.

Solution: Use the oil label on the car manual, do not mix different brands of oil.

Causes and solutions to excessive noise in car engines:

1. The vehicle engine is one of the most noisy vehicles, and its noise generation is different with the different engine speeds.

Solution: Some high-grade sound-absorbing foam materials can be added to the engine cover, which can not only suppress the vibration caused by the hood, but also absorb a lot of noise, and the effect is obvious.

2. When there is a leak in the intake and exhaust pipe, when the engine is started, the gas will leak from the leakage when the intake and exhaust are intake, resulting in vibration and noise.

Solution: In the face of such a situation, you need to check the intake and exhaust pipes, and replace the intake and exhaust pipes to avoid noise.

3. Tire noise is generated by the friction between the tire and the road surface when the vehicle is driving at high speed, depending on the road conditions to determine the size of the tire noise, the worse the road conditions, the greater the tire noise, and the tire irritability generated by the asphalt road and the concrete road surface is very different.

Solution: Tire noise is structure-borne noise, and its main source is vibration, and the most reasonable solution is to control vibration. Adding a damping plate and a sound-absorbing pad can solve road noise and tire noise well.

4. Wind noise refers to the pressure of the oncoming wind in the process of high-speed driving of the car has exceeded the sealing resistance of the door and entered the car, the faster the driving speed, the greater the wind noise.

Solution: Install or replace the door seal, because the seal is a rubber product, which will age after a long time, and the sound insulation and sealing effect will deteriorate.

1. The engine is noisy during cold start.

When the car starts after being parked for a long time, the engine will vibrate violently and then make a "click" noise.

Because after the car is parked for a long time, the lubricating oil basically flows to the oil pan, and the oil pump can not immediately establish the oil pressure when the cold car starts, especially the valve inside the cylinder head, which can not be lubricated enough when the cold car starts, and the hydraulic tappet and the mechanical rocker arm fail to work normally to cause a clicking sound.

Solution: The noise at this time is normal, when the engine starts for a while, the engine will return to normal, and there will be no more violent noise.

2. The engine noise is caused by the wrong oil condition.

Engine oil is an important component of engine lubrication, and when there is a problem with engine oil, it will affect the operation of the engine. When the viscosity of the engine oil is too high, it is easy to cause problems in the operation of the engine, and the lubrication effect becomes poor, resulting in friction during the operation of the engine, resulting in noise.

Solution: In the face of such a situation, you only need to change the oil.

Common faults of automobile engines.

When the engine shakes it means that the mixture inside the cylinder is not completely combusted, so it will be the engine shake, the incomplete combustion of the mixture will be discharged through the exhaust valve in the engine exhaust process, then there is an oxygen sensor installed on the exhaust pipe channel, his function is to check the oxygen content in the exhaust gas discharged, the more the mixture burns in the cylinder, the less oxygen is contained, and the more on the contrary, the more.

The oxygen sensor uses this working principle to detect and convert the electrical signal that the computer can identify to the engine control computer, and the computer then collects the parameters of the engine working state through each sensor on the engine according to the set software program, and sends the work instructions to the ignition system and the fuel injection system after correction and calculation.

After receiving these work instructions, these systems correct the working parameters to complete the ignition and fuel injection, and at this time the engine has entered the work of ignition and combustion again, and so on repeatedly work and adjust.

Is it a loud driving noise, or is it a big car! If the driving noise is loud, the general tire bearing or tire noise!

Many car owners complain that the noise of their cars is getting louder and louder, what is the reason?

"1. The engine noise caused by poor oil quality: when the owner adds some poor quality oil, the combustion situation in the engine will become worse, resulting in strong vibration and noise during the operation of the engine. 2. The engine is fixed and loose, resulting in high engine noise

The engine needs to be fixed, and it is generally supported and fixed by the engine foot pad,".

Causes and solutions of high noise in automobile engines:

1. The rubber of the machine foot is aging or loose.

Solution: Tighten or replace the rubber on the feet.

2. The oil quality is not used.

Solution: Use the oil label on the car manual, do not mix different brands of machine 3, engine cylinder missing.

Solution: It is necessary to check the working condition of each ignition coil and cylinder spark plug.

4. The disadvantages of direct injection in the cylinder.

Solution: Install engine soundproof cotton to reduce noise.

5. Abnormal sound of timing gear.

Solution: Tighten or lubricate the gear belt and replace the damaged gear.

6. Engine carbon deposits.

Solution: It is recommended to go to the 4S store to prescribe the right medicine and carry out the engine cleaning project to remove carbon deposits.

Dear ( Hello, the car has a feeling of engine noise, it is recommended to do the following checks:

First, this is more common is the vehicle spark plug aging or ignition coil damage caused by this situation, this can go to the repair shop to disassemble the spark plug, check the amount of spark plug clearance, if the gap is too large, or the wear is more serious, generally replace the spark plug can solve the problem. The inspection of the ignition coil needs to use the computer to read the specific fault code, if the corresponding cylinder has a misfire, it is generally a problem with the ignition coil.

Second, the engine has too much carbon deposit, which causes a lot of noise.

In this case, it is recommended to clean the carbon deposits in the engine, especially the carbon deposits in the intake tract and cylinder of the throttle. The carbon deposits in the cylinder are mainly the carbon deposits at the piston position and the valve base position, and then rematch the throttle!

Third, the fault caused by the failure of the oil circuit, this needs to detect whether the fuel supply pressure of the gasoline pump is normal, if the oil supply pressure is unstable, it is necessary to replace the new gasoline pump in time.

1. Check the engine belt to see if it is loose.

2. Check the engine to see if there is carbon deposit.

3. Check whether the sealing strip of the vehicle is aging.

There are many types of car engine noise, which must be analyzed according to the specific noise situation.

There is no answer to this question for older vehicles. Because he has been worn out as a whole, it is not a simple maintenance that can be solved, and it is recommended to replace the vehicle.

Hello, how to solve the noisy car engine? It's very simple, spend money to buy a car that can't hear the engine noise, as long as the engine is fine, why do you toss all this all day? How can mechanical things be perfect?

The way to deal with the noisy car engine is:1. Install sound-absorbing foam material at the engine cover; 2. Replace the intake and exhaust pipes; 3. Add a damping plate to match the sound-absorbing pad; 4. Install or replace door seals. There are several reasons why car engines become louder:

Excessive carbon build-up in the engine, aging foot pads, improper use of oil, improper operation of engine cylinders, and engine knocking.

Classification of Automobile Engine Engines:

1. According to the working mode of the air intake system, it can be divided into four types: naturally aspirated, turbocharged, mechanically supercharged and double supercharged.

2. According to the piston movement mode, it can be divided into two types: reciprocating piston internal combustion engine and rotary piston engine.

3. According to the cylinder arrangement type, it is divided into in-line engine, V-type engine, W-type engine and horizontally opposed engine.

If the engine of the car is noisy, well, most of the time it is because his exhaust is not good, or the heat dissipation is not good, you can go to the auto repair department to find a master to repair it, so that the car will be safe.

The car engine is very noisy, it is recommended to check whether the engine is faulty, if there is a fault, please go to the cycling shop in time for repair.

1.Tighten the rubber on the legs.

2.Use the oil number on the manual and do not mix different brands of oil.

3.Check the working condition of the individual ignition coils and cylinder spark plugs.

4.Engine insulation foam is added to reduce noise.

You can install a fireproof and soundproof wall in the engine compartment, install heat and sound insulation cotton in the engine cover, and then adjust the idle speed to the best speed to make the noise smaller.

Then, the simple physical treatment is to add some thick soundproof cotton, which is the easiest, if you want to deal with it at an advanced level, then disassemble the engine for inspection.

1.Installation of sound-absorbing foam material on the engine cover; 2. Replace the intake and exhaust pipes; 3. Add a damping plate to match the sound-absorbing pad;

The way to deal with the noisy car engine is:

1. Install sound-absorbing foam material at the engine cover;

2. Replace the intake and exhaust pipes;

3. Add a shock-absorbing plate to match the sound-absorbing pad.

4. Install or replace door seals.

Engine noise can be caused by excessive carbon deposits, aging foot pads, improper use of oil, engine cylinders not working properly, and engine knocking. The automobile engine is the device that provides power for the car, is the heart of the car, and determines the power, economy, stability and environmental protection of the car.

Depending on power**, automotive engines can be divided into diesel engines, gasoline engines, electric vehicle motors, and hybrids.