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List of the contents of this article:

• 1. What causes the engine noise to become louder
• 2, The sound of the car engine is buzzing. What's the good solution?
• 3、What is the reason for the loud roar of the engine

What is the reason for the loud engine noise

The reason for the loud engine noise is : The foot mat is damaged and aging for a long time, and the shock absorption effect is lost; the oil is insufficient or the oil is aging and sticky, and cannot be lubricated; the seal is aging and the sound insulation effect is lost; the engine has been used for too long, resulting in carbon accumulation. When the engine starts, the noise may be caused by the top bar or valve system.

The reason why the engine noise is louder is that the oil is used incorrectly. If the viscosity of the oil is inconsistent with that of the engine, carbon is easy to accumulate and the engine noise becomes louder. If the viscosity of the oil is too low, the lubrication will be insufficient, which will wear out the engine parts and make abnormal noise.

The sudden increase in engine sound is closely related to engine oil. Because the initial oil of the new car usually has low viscosity and good heat dissipation, and a little abrasive to help the parts run together, the lubricity is stronger and the natural sound is lower.

Analysis of the specific reasons for the loud engine noise: 1. Step on the accelerator and find that the acceleration is not obvious, lacks power, and the engine has a hysterical sound. The most likely time to happen is when the engine is hot, or cold, or when there is a shortage of oil.

The reason why the engine noise is louder is: too much carbon accumulation. The old oil is getting thinner and thinner, so it accumulates too much carbon. When the oil becomes thin, it is easy for the oil to escape, accumulate carbon, and lose a lot of power. After replacing the new oil, the engine cannot adapt to the viscosity of the oil, the speed may increase, and the engine noise may become louder. Low-temperature cold start.

The reasons for engine noise are probably as follows: First, the combustion noise is the type of oil. If it is a gasoline engine, it will produce a large combustion noise when gasoline explodes and surface ignitions and other abnormal combustion. If it is a diesel engine, the noise is caused by the vibration of various parts of the engine due to the sharp rise in the air pressure in the combustion chamber.

The sound of the car engine is buzzing. What's the good solution?

1. The solution to the high engine noise: the car has been running for too long and the wear is too large, and the transmission system gap is too large to produce vibration and abnormal noise. Treatment method, carry out comprehensive maintenance or destruction; the engine foot mat screw loosens and vibrates and makes noise.

2. The belt is not elastic enough: the engine makes a squeaky sound at work.Leakage in the intake and exhaust pipe: At the intake and exhaust pipe, the gas will leak from the exhaust pipe and make noise. Poor fuel quality: causing violent vibration in the engine to make noise.

3. The throttle valve is dirty and blocked. When the car accelerates, the load of the engine begins to increase. At this time, the opening of the throttle valve should be increased and the amount of fuel should be increased. If the throttle valve opening is not opened to the optimal position due to dirty blockage, it will cause poor engine gas mixing ratio and make noise when accelerating.

4. In this case, it is necessary to check the oil in time and replace the better quality oil; the wheel bearing is a simple and important car part, which can make the wheel rotate freely. The broken wheel bearing should be replaced before it can be used, so as not to damage the car and cause harm to the car; solution: replace the wheel bearing.

5. The solution to the loud noise of the car engine is as follows: The high noise of the engine is related to the unsuitable or dirty oil. Change the oil and check whether the bearings of the generator, compressor, idlers and tensioners are damaged. After the bearings are damaged, they will make a metaphorical noise. You can make a cover, firewall plus Install soundproof cotton for treatment.

6. The DIY car maintenance program "Car Master" of "Fun and Rising Posture" is broadcast every Friday.

What's wrong with the roar of the car engine

1. The reason why the engine sound is getting louder: Stepping on the accelerator, I found that the acceleration was not obvious, lacked power, and the engine had a hysterical sound. The most likely time to happen is when the engine is hot, or cold, or when there is a shortage of oil.

2. Abnormal sound of the engine compartment Some of the sound of the engine vibration is a normal phenomenon, but there are also special cases, such as the shrill sound of the belt, which is generally caused by the slippage of the belt; for example, the sharp sound of dry friction of metal parts, which is generally generators, water pumps, steering booster pump bearings. The reason for the damage.

3. There is a humping sound in the engine, or it will also appear when it slows down. In short, it changes with RPM, and the volume changes. The possible reason is that the power steering oil is missing, fill it up. The generator bearing may be damaged. Problems with power steering pumps and water pumps will produce similar noises.

4. The reasons are as follows: it is not lubricated enough when the cold car starts, and the hydraulic column and mechanical rocker arm do not work properly, resulting in a rattling sound. The condition of the oil is not right: if the viscosity of the oil is too high or too low, the engine will make noise. The belt is not elastic enough: the engine makes a squeaky sound at work.

5. What are the reasons why the sound of the car engine becomes louder? The screw of the lower guard plate of the engine is loose. When we fixed him, the strange sound disappeared! The plastic parts in the engine compartment are loose.For example, the engine cover, intake pipe, etc., just tighten it. The engine belt makes a strange sound.

The engine roars loudly when accelerating

When the engine is running, if it makes a dull sound similar to a clapping, it may be because there is a problem with the cylinder valve. In this case, if you drive the car very fast, the sound will disappear in the fast run. Therefore, the sound that will disappear once the express car is driven is likely to be due to the problem of the cylinder valve.

If your vehicle's engine roars loudly when accelerating, excluding the wrong gear or sudden acceleration, it may be caused by the following reasons: exhaust pipe leakage. When entering the exhaust pipe and leaking, if the vehicle speeds up, the exhaust speed will increase.At this time, the vehicle will make a loud roar.

Clean the throttle valve. As soon as the engine speeds up, the noise is particularly loud. If it is caused by dirty throttle valves, the noise can be improved by cleaning the throttle valve. Repair or replace spark plugs and ignition coils.

What is the reason for the louder engine noise? When I stepped on the accelerator, I found that the acceleration was not obvious, lacked power, and the engine had a hysterical sound. It may occur when the engine is hot, or cold, or when there is a shortage of oil.

The specific reasons for the loud roar of the engine when speeding up are as follows: leakage of the exhaust pipe: when the intake and exhaust pipe leaks, as soon as the vehicle accelerates, the exhaust speed accelerates, and the vehicle will have a louder roar at this time.

What's the matter with the loud roar of the engine when accelerating?

The exhaust pipe leaks. When the intake and exhaust pipe leaks, the vehicle accelerates and the exhaust rate accelerates. At this time, the vehicle will have a loud roar. 2 The throttle valve is dirty and blocked. When the car accelerates, the load of the engine begins to increase. At this time, the opening of the throttle valve should be increased and the amount of fuel should be increased, such as The opening of the throttle valve is blocked due to dirt.

The roar of the engine when the car steps on the accelerator is very loud, which is caused by too much oil: if more oil is added, the instantaneous working resistance of the engine will increase, thus increasing the rotational resistance of the crankshaft and reducing the output power of the engine. In addition, excessive oil will break into the combustion chamber and participate in combustion.

Exhaust system noise: The exhaust system includes a mufler resonator catalytic converter and a collector u002F lower pipe exhaust system to bring the exhaust gas from the front of the car to the rear.Excessive engine carbonization: Excessive carbonization of the throttle valve will cause the engine to become louder.

The exhaust pipe leaks. When the intake and exhaust pipe leaks, the vehicle accelerates and the exhaust rate accelerates. At this time, the vehicle will make a loud roar.

The reason why the engine sound becomes louder: When you step on the accelerator, you will find that the acceleration is not obvious, there is a lack of power, and the engine has a hysterical sound. The most likely time to happen is when the engine is hot, or cold, or when there is a shortage of oil.

What is the reason for the loud roar of the engine when stepping on the accelerator

1. The body makes a strange sound, usually because the rigidity of the body is not enough, resulting in the friction or shaking of the door and the frame of the vehicle while driving, or some Local de-welding produces friction between steel plates, etc.

2. There is a buzzing sound when the car's refueling door. What is the reason for the buzzing of the car stepping on the accelerator? The reason for the buzzing of the vehicle's refueling door is: excessive engine carbon accumulation, poor gasoline filtration, gasoline quality problems, aging spark plugs, engine failure, cylinder failure.

3. The roaring sound of the engine stepping on the accelerator may be caused by exhaust pipe leakage, throttle valve plug, engine power loss caused by engine overheating and other reasons. Exhaust pipe leakage: When the intake pipe leaks, the speed of the vehicle increases, and the speed of the exhaust pipe increases. At this time, the vehicle will make a relatively loud rumble.

4. If you don't pay attention to maintenance, it may be caused by too much carbon accumulation in the machine (too much carbon accumulation in the engine, too much carbon accumulation in the throttle valve, too much carbon accumulation in the spark plug, etc.), just go to the repair shop for cleaning. It may also be that the filter is not smooth (the most common is that the air filter is too dirty) and you can go to the repair shop for cleaning or replacement.

5. There are many reasons: the vehicle uses too much or too little oil. The oil has reached the replacement cycle and needs to be replaced. The engine foot is loose. The timing belt or timing chain of the vehicle is loose and aging. The problem should be actively checked. After solving, the vehicle can be used normally.