The article is told about the reasons and methods of eliminating the leaf of the generator belt on Lanos cars, Priora, Kalina, Lancer 9, Renault Logan and other cars on the cold, in the rain and with loads.
First feature
Many car owners have an unpleasant situation when a loud and very unpleasant whistle comes from under the hood. Moreover, it may occur at a variety of moments - when starting the engine, while driving, in winter, in rainy weather and so on.
The time of unpleasant sound can vary from a few seconds and up to constant while the power plant works.
Almost always the reason for such a phenomenon lies in the belt transmission, which leads to the movement of the generator.
In many cars, the generator belt further provides the operation of a number of equipment - a hydraulic agent, an air conditioner compressor. Therefore, this belt transmission is already called the "drive of the auxiliary equipment", although in the old manner everything is called the generator belt.
The resulting whistle is not only unpleasant for perception, as a rule, is not the problem. Nasty sound is the signal appearance signal.
Many all write off the belt gear itself, although it may also point to other malfunctions.
Belt drive drive
Belt transfer to drive hinged equipment, the main of which is the generator, is not in vain.
No other type of gear will have so many advantages like a belt.
And the benefits are as follows:
- Cheapness;
- The ability to transfer efforts to the distance without auxiliary elements (although in some cases it is still used tension roller);
- Flexibility, which allows you to transmit effort to several devices immediately;
- Relatively long service life with minimal service.
In practice, it is proved that the belt as a drive is the most optimal option And if the conditions for its operation are observed, the belt transmission also provides silent work.
But any violation leads to the appearance of a whistle under the hood. Although it is not always the problem lies precisely in the belt, but most drivers, as practice shows, "sinful" for him.
The peculiarity of the work of the belt drive is that the transmission of effort is carried out at the expense of friction forces that arise between the working surfaces of the belt and pulleys.
To ensure this friction, the drive element must correctly be stretched.
The main causes of whistle appearance
Belt tension.
If the tension is insufficient, then the belt slips over the surface of the pulley, which becomes the cause of squeal.
But often it happens that after an additional stretch, the sound does not go anywhere, on the contrary, it may even increase. And in this case, the problem is explicitly in the other.
Generator drive wear.
The second of the main causes of the leaf of the generator belt lies in its strong wear.
The bundle, cracks and diverse areas affect the density of the fitting of the drive surface to pulleys, which is why slipping appears.
Hit technical fluids (First of all the oils) also affects friction between working surfaces.
In addition to the specified problems, the drive may squeeze for other reasons:
The sound is heard when starting to cold.
Most often, this is due to the poor-quality material of the manufacture of the generator belt or its natural wear - "aging".
For normal transmission, the belt must have good elasticity. But if the manufacturer used rigid tires, then due to excessive hardness, it will not properly "stick" to the surface of the pulleys, and slip over it.
The same result also gives the "aging" of rubber, she "duby", losing elasticity.
The reason can also be wounded in the bearings of nodes, which drives the belt, especially at negative temperatures.
This is because the lubricant in the bearings is frozen because it increases the resistance to the rotation, as a result of which the belt slippers the pulley.
Vine appears when creating a load on on-board network Or when turned on additional equipment (air conditioner).
The reason lies in all the same low-quality material manufacturing, loss of elasticity, working out working surfaces.
If the generator belt whistle appears only when a certain hardware is turned on, this indicates the fault of the bearings of this node.
Rainy weather.
If the sound appears in rainy weather or with high humidity, it is often the cause of insufficient stretch.
As a result, the moisture, settled on the belt, reduces the friction force between the pulley and the drive, and the latter begins to slip.
Other reasons.
For example, in the old VAZ models, a wedge belt is used, in which the side surfaces are workers.
So, if the PAZ pulley is greatly developed, the belt will be stronger in it, because of this contact surface area decreases and the belt is easier to slip.
In multi-stranded belts, this problem is not relevant, but there are other nuances in such a drive.
What can giving screams on different cars?
Deu Lanos.
For example, in Deu Lanos, the belt leads only the generator. That is, in most cases of wine squeezing, the drive element itself becomes.
But sometimes there is such a problem as a violation of the position of the pulleys or a small disk of one of them (most often - the generator, due to the wear of bearings).
And because of this, under the hood will be published unpleasant sounds. Therefore, if everything is in order with the generator's belt, you should pay attention to the pulleys.
Lada "Priora" and "Kalina".
This car stamps are installed different types Power plants.
In this case, the configuration of the drive of the generator and attachment equipment (if such is included in the package) is also different.
But in any version of the motor to ensure the proper drive tension, there is a tension roller in the design. And if the cause of the whistle lies not in the belt, the next element that should be checked is a tensioner roller.
Drive unit auxiliary aggregates By car Lada "Priora".
Mitsubishi Lancer 9.
W. this car There is another problem, the pump gur, which works from the belt and is almost on the same level with the pulley of the generator, with no drive protection.
As a result of a not very successful constructive solution on the working surface of the belt during operation, dirt and moisture falls, which cause slippage.
And it is almost impossible to solve such a problem, therefore a short-term screech of the belt in such a car is considered a "illness".
Other car brands.
But in Renault Logan, the causes of the leaf of the generator belt do not differ from the "Priora" and "Kalina", that is, the problem usually lies either in the belt itself or in the tensioning mechanism.
What can be done?
As can be seen, the main reason lies in the drive element itself. Therefore, when third-party sharp sounds appear:
Make listed works can be independently, but if you have difficulty with independent repairCompare on https://autoreshenie.ru/zamena-remnya-generatora-711/ Prices for replacing the generator belt among all Moscow car services, check out the reviews on them and pick up the nearest!
Many car owners note that unpleasant third-party sounds appear only under certain conditions or after replacing the drive element. It is noted that the belt tension is normal, but the whistle is available.
It is usually a bad quality of the product and its increased hardness.
To solve the problem, you can use two ways - to change the generator belt to high-quality or try to process it with means.
So, for example, are silicone Grease In the form of a spray for processing rubber elements and air conditioning "Hi-Gear".
The use of these tools leads to an increase in elasticity and "sticking" of the actuator to pulleys.
But the use of WD-40 is not recommended for these purposes. The composition of this spray has oil refining products that can have a negative effect on rubber and lead to its rapid "aging."
Such processing can really help eliminate squeaks under the hood, but only for a while, and after a certain period they will return again. Therefore, for a long time to get rid of third-party sounds will help only.
Possible consequences
Finally, we note the consequences to which the belt slip can cause, accompanied by loud and unpleasant sound.
First, the belt wear rises, because slipping it turns about the pulley and heats up.
33 ..Mitsubishi Lancer 9. Crushing, knock or whistle while starting the engine
The emergence of foreign sounds in motor compartment During or immediately after starting the engine, it is a reason for diagnosing and checking in DVS. Various deviations from the norm may occur as a result of the wear of individual elements of attachments, drives, bearings, pulleys or belts. Also should not exclude the probability of breakdown itself power aggregateand and its nodes. Drivers often notice that when the engine starts, the engine will be heard, in the engine something creaks something, a whistle appears, and the like.
It should be noted that usually many sounds are better auditioned at the moment of cold start, although in some cases noise does not leave even after heating the power unit. It is also necessary to add that in some cases the problem progresses noticeably, that is, the sound each time or gradually enhances. In other situations, extraneous noises may not change their tonality and intensity throughout hundreds or even thousands of kilometers.
In this article, we will talk about what breakdowns can lead to the fact that when the engine is cold started, noise is heard, as well as for what additional features you can determine the malfunction yourself.
When the engine starts, the engine is heard
If the driver turns the ignition key to the "Start" position and at this moment it can be selected, while the noise disappears after the engine "grabs" and starts working independently, then the most common cause is the starter fault.
If when starting the engine, the starter grinds is heard on the cold or hot, then there may be several reasons for such a malfunction.
As a rule, it is necessary to check the retractor relay, the Bendix starter and the flywheel. The fact is that the Bendix may not enter with the flywheel properly, with the result that when the engine starts, the crack is heard or a characteristic starter grinding appears.
When starting the engine, a whistle is heard
A whistling sound at the time of start-up usually makes a generator belt or a water pump of the cooling system (pump). The fault is manifested in the form of high-frequency pisch or squeal after the launch of the engine, and may also know about herself already on a heated motor with a sharp press on the gas pedal and an increase in crankshaft revolutions.
In case of a problem with the belt, it is necessary to check its condition and stretch. Sometimes temporarily helps applying special compositions for rubber care, which allow the belt surface to remain soft and elastic, protect against cracking, etc. With an obvious loosening of the tension, the generator belt must be tightened by simultaneously checking the state of the pulleys and tensioner. We add that a strong stretched belt is not recommended, since the whistle manifests itself in a short period of time. In this case, as well as when pulling the generator belt is not possible, only replacement is shown. If the belt is normally stretched, does not slip on the pulleys, but still whistles, then it may turn out to be poor and demands a replacement.
I also add that the cause of the whistles may not only be the belt, but also the generator itself. More precisely, problems may occur with the bearings of its drive. This indicates a characteristic rustle, whistling, easy crackling during the operation of the motor at the XX.
Pomp also makes a thin whistle on idlingThe problem may be accompanied by a rocution or crackling. This feature is a reason for the mandatory verification and replacement of this item.
To check the generator and / or pump, you can take a tree bar, also at the end of a wooden stick you can attach a tin can, etc. Then one end of the bar or a stick is applied to the generator drive area or pump on the engine running, and the other end of the bar or the tin can the tight bank is depressed to the ear. Such a solution allows you to more accurately determine the source of noise and localize a malfunction. By the way, if there is an opportunity, instead homemade adaptation To listen to noise, you can use the so-called car stethoscope (sometimes medical).
If the noise source is not fully installed, then it is necessary to remove the generator belt, after which the pump pulley or the generator is sharply rotated. The appearance of noise, difficulty during rotation, beating, hopes and other deviations from the norm will indicate the problem. In the case of the generator, the device can be repaired, replacing bearings. The pump is recommended to immediately change, since on many cars, the water pump jacket leads to the timing belt cliff.
We also recommend reading the article on how to check the pump by car without removal. From this article, you will learn about the methods of testing the health of the water pump, as well as on the methods of self-definition of this element of the engine cooling system.
An additional reason for replacing the pump is considered to appear the appearance of antifreeze or antiframes at the place of its installation. Leaks of coolant pose a danger in the form of overheating of the engine, breaking the timing belt means that the piston strikes the valves, as a result of which the valve is oppressed. Ultimately, when you ignore these problems, the motor can be needed expensive or even overhaul.
When the engine is started, the knock is heard
The appearance of the knob in the engine should be divided into problems with the mechanism of gas distribution and elements of the DVS itself (CSM and CPG, pistons, connecting rods, crankshaft, etc.) Foreign sounds in the GDM region may indicate significant wear of the rollers, the strap defects or timing chains.
Rollers can whistle, sweep, criste or pride. In some case, the timing belt loses the protective casing. We also note that on the motors with a chain when tensile the chain itself or insufficient tension, the sound resembles a rustling rift, and cotton can also be born. If you increase the revolutions, such sounds disappear and again appear after the gas reset. In this situation, the timing chain must be stretched or changed.
The characteristic brake of the gas distribution mechanism is considered to be a knock and / or exhaust valves. Such a knock differs in frequency from other knocks, has uniform intervals. The fact is that the camshaft rotates twice as slower compared to the crankshaft. An irregular adjustment of the thermal gap of the valves can cause the appearance of the knocks.
On motors with hydrocompensators frequent cause It is the output of the latter or scoring the oil supply channel in the GC. In this case, the sound is ringing, clear, well listened to the valve cover area. Note that on many cars after a cold start, the hydraulic components are knocking for a few seconds until they reach them motor oil. This is considered the norm. If the knock does not leave after HRS warm, then you need to contact the service or solve the problem yourself.
Now about knocks in the engine itself. After starting a cold unit, you can hear what pistons are knocking in the cylinders. The knock is deaf, looks like shocks on the clay dishes. The most clearly knocking pistons manifests itself at idle, as well as at low turns under load.
Also in the engine can appear a knock of indigenous or connecting crankshaft liners (crankshaft sliding bearings). Such a knock has a metal hue and slightly muffled. As a rule, at the initial stage, the malfunction is manifested after the engine starts in the event that it is sharply pressing gas in idling mode.
In terms of frequency, the knock increases in parallel increasing revolutions. The axial luft of the crankshaft also leads to the appearance of stuffs, while the sound is sharper, it is distinguished by the fact that the gaps between the beats are uneven. The most clearly listened when the crankshaft turns are changing smoothly.
As for the knocking rods, a frequent reason is the problem in connecting rod liners. Such a knock is sharp, it is clearly audible with a sharp press on the gas pedal. During the diagnosis, the knocking piston or connecting rod can be determined by alternately shutting down the spark plug on each cylinder.
What else can knock, noise or whistle in the engine after launch
As can be seen, there are many reasons for the appearance of knocks and noises. At the same time, it should be added that during the launch of a cold motor, especially in winter, the injector nozzles themselves can be mastered on units with fuel injection system.
In some cases, this does not indicate any malfunction, since after a minor warm-up, the noise intensity decreases or the outside sound completely disappears. The knock may also occur at the time of start-up in the cold because of the High-hardened CVC pillows (the engine is conditionally served at the time the starter rotation is slightly ahead, after launching "scatter" back).
Another cause of a whistle or a silver can be a power steering pump. At the time of launching the screech, squeak, howl or whistle can leave both the pump itself and its drive and the steering rail, in which the working fluid GUR begins to move.
Also, you should not forget about the climate intake compressor, especially if the engine is started in parallel with the air conditioner on or the climate is activated immediately after launch. The compressor drive or the compressor itself is often the cause of extraneous noise. 33 ..
Many faults in the car can be determined by sound. When some third-party noises appear in the form, a grincping, warning or whistle, it can signal a breakage of one of the nodes of the car. Some faults are fairly easily eliminated together with accompanying symptoms in the form of annoying and other sounds. But there are certain signs of breakdowns that manifest themselves most often. Most often, when starting the engine, a whistle is heard caused by a number of factors. At the same time, such unpleasant sounds can be with an already running motor. Next, we will tell about the reasons for such phenomena and how to eliminate them.
Engine whistling when it starts and work
It is always nice to realize what your car is fully working and will not deliver inconvenience at the most inopportune moment. However, it does not always happen and many car owners face a number of manifestations of failure of some parts of the machine. This causes people to doubt their "iron horse", and positive emotions such a car clearly will not add. The most frequent breakdown signal is a whistle when starting the engine. And with it, not only the owners of old cars are faced, but also almost new, which recently left.
The reason for the operation of the engine is kept whistling, a number of different malfunctions in the car engine can become. Usually it is not so dangerous sign as annoying. Although if the motor began to publish such foreign sounds and the engine whistles more and more, it is clearly impossible to delay this problem. Some ignored malfunctions can lead to expensive repair and mass of problems.
Belts
One of the main causes of whistle when starting the engine are belts of all kinds of drives in the carpenter of the car. Poor tension and their wear enters the appearance of the very annoying whistling, which can enhance with increasing engine speed. Or maybe, on the contrary, disappear when the gas pedal is pressed. In any case, the sound published by belts is very well audible and not to notice it is impossible.
When a whistle appears first, you need to check the tension drive belts
First of all, you need to check the tension of all drive belts. If some of them are weakened, then its slippage is possible, which leads to a whistle when the engine is running. In this case, you need to pull the belt to permissible limits to leave it normal free move. Another reason for the slippage of belts can be dirt and oil on them. In this case, it needs to be carefully cleaned, and it is best to replace the new one.
Most often, trouble in terms of the noise published is the generator belt. A whistle appears when the engine is started and disappears when the engine is rolled up, since the belt is in one amplitude with rollers and pulleys. To threaten this may not be a battery charge and all the problems arising from here. It happens that the engine whistles, and then suddenly ceases to make this sound. At the same time, no change is immediately observed. And the reason for this can be a broken belt of the generator. After it is broken, charging the battery when the motor runs stops. This usually signals a special light bulb on the instrument panel, but not all drivers notice it and give it any meaning. Such inattentive car owners risk staying somewhere in a deserted place with a served battery.
Another most common reason for the occurrence of a whistling from the car space is. Here the consequences of ignoring problems can be much more serious than in the previous case. The problem here is not so much in the belt as in the bearing, but pay attention to it is necessary. Overhaul of the motor belt may follow the overhaul of the motor, due to the bending of the valves, standing for big money. Therefore, on all kinds of sheeps, when the engine is necessary, you must respond in a timely manner and do not bring the situation to extremes. This applies not to all types of motors, but the real problem is widespread.
In most cases, the engine whistled on the cold is caused by all the same belts. If when driving a motor he disappears, then the reason is definitely in them. In the cold season there is a chance that consystem grease In the bearing of the generator belt can thicken and the belt will not be able to scroll the pulley of the generator, simply slipping. By solving such a problem, this lubricant can be replaced by the generator belt. But before that, you need to make sure that the pulley of the generator is generally spinning in itself and it is not jammed. Therefore, as you see, the whistle on the cold engine is eliminated quite easily.
If you hear some kind of whistle when starting the engine and subsequently when it works, then first pay attention to the tension of all belts in the car engine and check their condition. It is possible that some of them need tension or in replacement.
Rollers and bearings
More elements car Enginewhich may be made of unpleasant noises, are all sorts of bearings and rollers that are present in many nodes of the motor. Often, with a malfunction, they make sounds slightly different from ordinary whistle low tone. This sound appears when the motor is running still at idle, but increases with increasing revolutions and immediately disappears or becomes much quieter. If you have determined that the engine whistles precisely because of these elements, then "cure" this can be replaced by the details failed.
Fault intake system
If a whistle is heard when operating the engine, and you have already seen that the reason does not lift in something else, then some kind of malfunction appeared in the engine inlet system. It can be either throttle valvewhich periodically encourages and creates specific air twists, or the PCV intake valve responsible for the recirculation of crankcase gases.
In the first case, the whistle during the operation of the engine is eliminated with a thorough washing. But in order to clear it well from the dirt, you must completely shoot this node, as you do not need to forget.
In the second case, the problem lies in the closed valve PCV Systems inlet. Hot air from the crankcase cannot normally circulate because of this, which leads to the extrusion of oil through the seals due to excessively high pressure and the appearance of the whistle when operating the engine. "Treats" the real problem of the ordinary cleaning of this valve. To do this, dismantle the valve, which is either on valve coveror near air filter On the ventilation tube Carter. If the valve is metallic, then all the means for cleaning are perfect, which do not scratch the surface. In the event that it is plastic, it should be avoided too aggressive aerosols and liquids. After that, simply put the valve in place and the whistle will stop.
Turbine malfunctions
Many modern cars equipped with turbocharger, which significantly increase their power and challenges. But this is another node in the engine, which can signal its fault characteristic and loud whistle. The cause of this can be air leakage in the place of the motor connection and turbocharger. Typically, such sounds are talking about the ambulance "death" of this important detail. Most often, this malfunction occurs on machines consuming diesel fuel. So the owners of such cars know that the turbine whistle diesel engine Does not bring anything good.
What to do with the appearance of a whistle from under the hood?
We listed everything possible malfunctions, in which the motor and its nodes can make a whistle when starting the engine or when it works. To eliminate most of them, the car owner does not need to have some special professional skills. With the replacement of many belts and rollers, with their tension, as well as with cleaning elements inlet system You can cope on your own. But if you are not sure that you are under the power to cope with such problems, it is better not to tighten with them, but contact the car service to the masters of your business and then you can avoid much more expensive repair And the masses of unnecessary troubles that can be caught off by surprise.
