What is the problem with an engine squeak?

The reasons for the squeaking of the automobile engine are as follows: 1. The engine lacks cylinder: When the engine lacks cylinder, the car will show problems such as louder engine sound, unstable idling, and abnormal body shaking.

At this time, it is necessary to check the condition of the cylinder and the working condition of the spark plug, and replace the spark plug if necessary. 2. Improper use of engine oil: If the oil is too viscous, the internal parts cannot be effectively lubricated, and abnormal noise will be caused by the friction of the parts.

It is necessary to check the engine oil, and change the correct type of engine oil according to the vehicle manual during daily maintenance. 3. Abnormal sound of timing belt: If the tightness of the timing belt is not suitable, abnormal noise will also occur.

In this case, the tightness of the belt needs to be adjusted again. 4. Short car warm-up time: when the car is just started, the oil fluidity is poor, and some parts cannot be effectively lubricated.

When the car is warmed up for a period of time, the engine temperature reaches a normal level.

Engine squeak is often related to the engine speed, load, temperature and working cycle, and its change law can be found out by analyzing the characteristics of squeak and squeak. Squeak and squeak are only present at idle or low speeds. The reasons for the sound are: the gap between the piston and the cylinder wall is too large, the piston pin is too tightly assembled or the connecting rod bearing is too tight, and the gap between the tappet and its guide hole is too large; The profile of the valve cam is worn, and sometimes, the starting grip is loose and the pulley rattles.

Hello, one reason why the car makes an abnormal noise when starting is caused by the pulley; In addition, it is also possible that the lubrication is poor due to low oil pressure, and the abnormal sound inside the engine will generally disappear after the car is launched. Hope it helps.

It's a tensioner failure, and I changed it and it still made an abnormal noise. It can only be managed for about 2 months. Look at the unevenness on the tensioner and observe it.

It's hard to talk about this, since it's the maintenance done outside, then, it's recommended to go to the car repair shop you are familiar with or you trust to check it again, now it's mixed, and it's hard to talk about it without evidence.

Please check if the pulley is making abnormal noises.

1. Abnormal noise of automobile air conditioning compressor.

As a high-speed rotating working part, the probability of failure of the air conditioning compressor is relatively high, and abnormal noise is a common failure.

There are many causes of compressor squeaks. For example, the compressor electromagnetic clutch is damaged, or the internal wear of the compressor is serious, etc., can produce abnormal noise.

2. The compressor electromagnetic clutch is a common part of abnormal noise.

The compressor often runs from low speed to high speed under high load, so the requirements for the electromagnetic clutch are very high, and the installation position of the electromagnetic clutch is generally close to the ground, and it will often come into contact with rain and soil, and when the bearing in the electromagnetic clutch is damaged, it will produce abnormal noise.

3. The tightness of the compressor transmission belt also directly affects the life of the electromagnetic clutch.

If the transmission belt is too loose, the electromagnetic clutch is prone to slippage; If the transmission belt is too tight, the load on the electromagnetic clutch will increase. Improper tightness of the transmission belt will cause the compressor to not work, and at worst it will cause damage to the compressor. When the transmission belt is working, if the compressor pulley and the generator pulley are not in the same plane, the life of the transmission belt or compressor will be reduced.

4. The repeated engagement of the electromagnetic clutch will also cause abnormal noise in the compressor.

For example, insufficient power generation from the generator, high pressure in the air conditioning system, or excessive engine load can cause the electromagnetic clutch to engage repeatedly.

5. The gap between the electromagnetic clutch and the compressor mounting surface.

There should be a certain gap between the compressor mounting surface of the electromagnetic clutch, if the gap is too large, then the impact will also increase, if the gap is too small, the electromagnetic clutch will work with the compressor installation surface between the motion interference, which is also a common cause of abnormal noise.

6. Reliable lubrication is required when the compressor is working.

When the compressor lacks lubricating oil, or the lubricating oil is not used properly, there will be serious abnormal noise inside the compressor, and even cause the compressor to wear and tear and scrap.

It may be that the bearing of the engine belt is broken, it is recommended to go to the repair shop to check it.

There is a chirping sound when the cold car starts, it is the sound of the belt, and the sound will disappear after a few minutes of idle warm-up! In this case, it means that the belt is aging or too loose! Just tighten it and you're good to go!

Hello, it may be that the bearing of the engine belt is broken, it is recommended to go to the repair shop to check it [There is a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

Hello, your belt is a little bit sent to 4s o'clock to give you a tightening.

Hope it helps, I wish you a nice trip.

Hello, check the belt, and the tensioner. See if the belt is too loose [There is a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

1.Check that the engine belt is properly tightened.

2.Inspect the engine belt pulley for damage.

Analysis of the cause of the special noise of the automobile engine.

1. Engine oil. If the oil viscosity of the vehicle is too high, it is easy to cause problems with the operation of the engine, and the lubrication effect will become poor, resulting in high engine noise. Therefore, at this time, you should go to the repair shop in time to check whether it is time to change the engine oil, or calculate whether the time for maintenance is up.

2. a transmission belt.

Check to see if the drive belt is loose, sometimes the belt is loose and can cause the engine compartment to become louder. At this time, the transmission belt needs to be replaced in time.

3. Water temperature. If the engine is noisy, it is also possible that the water temperature is too high, and it is necessary to see if the water temperature gauge is normal and whether there is smoke in the engine compartment. Be sure to change the coolant before winter.

4. Idling. If you feel that the noise is relatively loud when idling, and the idle speed of the vehicle is high, it is likely that the throttle, air intake, and fuel injector of your car should be cleaned, especially the throttle.

5. Sound insulation. If you listen to the engine working normally from outside, and feel that the noise is too loud when you sit in the car, it means that your vehicle is poorly insulated. The vehicle's seals should be inspected to see if there is any signs of aging. Or increase the sealing effect of the vehicle.

This situation is caused by the loosening of the belt around the engine, and after this situation, the belt should be tightened or replaced with a belt. There are many belts around the engine, and there are generators, compressors, water pumps, power steering pumps and other equipment around the engine, which need to be driven by belts.

The belt is a rubber product, and the rubber product will be aged and worn for a long time, so the belt needs to be replaced regularly. If it is not replaced for a long time, the belt will become longer and will loosen when it becomes longer. When the belt is loosened, there will be a squeaky sound.

If the wear of the belt is severe, it will also cause the belt to squeak and squeak. There is a tensioner on the belt, and the tensioner can be adjusted to keep the belt tight. If the belt does not deteriorate and does not need to be replaced, but it is loose, the tensioner can be adjusted.

Some cars will use timing belts, and we must pay attention to this belt. If the timing belt breaks in the process of working, it will cause the engine to have a top valve, which will seriously damage the engine. If the valve is pushed by the piston, the cost of repairing it is very high.

When using the car in normal times, be sure to replace the belt regularly, and choose products from big brands.

Photo by Brother Choosing a Car) @2019

This happens because the belt around the engine is loose. When this happens, the belt should be tightened or replaced. There are many belts around the engine, and there are generators, compressors, water pumps, steering pumps and other equipment around the engine, all of which need to be driven by belts.

The belt is a rubber product, which will age and wear out after long-term use, so the belt needs to be replaced regularly.

If it is not replaced for a long time, the belt will become longer and then it will come loose.

When the belt is loose, it squeaks.

If the belt is severely worn, it can also cause the belt to squeak.

There are tension wheels on the belt. By adjusting the tensioner pulley, the belt can be kept in tension.

If the belt has not aged and does not need to be replaced, but the belt is loose, the tensioner can be adjusted.

Some cars can use timing belts, which must be paid attention to.

Timing belts are used to actuate the valves. If the timing belt breaks during work, it will cause the engine valve to jack up, causing serious damage to the engine.

If the valve is driven by a piston, the maintenance cost is very high.

When you usually use the car, you must change the belt regularly if you are not accompanied by the car, and you must choose products from big brands.

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