If you encounter a vibration problem when accelerating, we advise you to immediately look for the cause of the malfunction. Our article will help you with this. We will list the most common causes of severe vibration during overclocking and help you understand how to fix the problem.

Main reasons

In most cases, vibration is the result of centrifugal forces. They can arise for the following reasons:

• Significant imbalance in the main components and rotating components of the motor. This applies to the crankshaft and clutch. You can find the exact cause using diagnostics at the service.
• A significant difference in the weight of the elements of the crank mechanism (pistons and connecting rods).
• Imbalance of elements brake system and wheels.

Increased body vibration - typical causes

There are various factors that can lead to excessive body shaking. All of them can be divided into three groups:

1. Constructive. These are factors caused by the characteristics of the design of a particular vehicle element. For example, tires are inflated through a valve, the presence of which negatively affects the balance of the wheels.
2. Operational. As a rule, the essence of the problem lies in the uneven wear of the element, changes in its shape or characteristics. Vibration is often caused by excessively worn, damaged or defective engine mountings. They are used to reduce the vibration that the powertrain transmits to the vehicle body. As a rule, pillows are made of metal with a rubber layer.
3. Technological. In this case, the cause of vibration is the deviation of the imbalance parameters and the dimensions of the parts, which contribute to their interchangeability. In practice, it happens that the mass of the purchased connecting rod does not correspond to the required indicator, as a result of which the motor experiences an uneven load. This is what causes the car to vibrate on idle, when accelerating and driving.

We are looking for a solution to the problem

In fact, we have listed the most common causes of car vibration during acceleration. It's time to fight the problem. First of all, we'll talk about balancing. While it is almost impossible to completely eliminate engine vibration, you can minimize it as much as possible.

Before balancing the element power unit or another part of the car must be inspected by a specialist. With the help of special equipment, the master can determine the hardest side. After that, you can either reduce its weight, or increase the weight of the opposite part. In fact, it is better to entrust such procedures to an experienced specialist, since it is not easy to balance the crankshaft or even the wheels with your own hands.

Basic balancing methods

Today, in most cases, there are two main methods of balancing parts:

• static balancing;
• dynamic balancing.

Each method has certain features, which will be discussed below.

Static balancing method

This balancing is done without rotating the part. The advantage of this method is the possibility of using it in a regular garage, since no special devices are needed. However, it is not easy to get rid of the imbalance by static blocking alone.

The essence of the method is that the element is mounted on bearings or prisms. After this, the part must be rotated around its axis, as a result of which it will be in a position in which the heavier part will be below the rotational axis. Remember that the bearing resistance should be as low as possible and the prism should be as horizontal as possible.

Dynamic balancing method

To implement this method, the part is constantly rotated on the appropriate equipment. The advantage of dynamic balancing is that it helps to completely eliminate the imbalance. This method, as a rule, is used even for the most rigid elements, for example, a universal joint and crankshaft... Since all work is carried out using a computer, you will be able to get the most accurate information about the changes.

The application of dynamic balancing of the clutch basket, brake drum, crankshaft and wheel hub involves reducing the weight of the heavier part by removing a certain amount of material. For this, different processing methods are used, for example, drilling.

Finding a vibration source with your own hands

Determining the cause of shaking without special equipment is very difficult. Some drivers perceive normally extraneous sounds when driving a car, while others pay attention to even the minimum vibration during acceleration.

The existence of the problem under discussion may be evidenced by the following factors:

• spontaneous movement of various objects located on the front panel;
• blurred reflection in the rear-view mirror (in the cabin);
• constant vibration of the steering wheel (as a rule, you need to balance the wheels of the front axle);
• vibration of the lower body and controls.

What to look for first of all?

First check the condition of the engine mountings and exhaust system... The check should be carried out with the motor on and off. Damage to the engine mounts is considered unacceptable. Even if cracked, the part must be replaced. In some cases, vibration and other abnormal sounds are caused by too small a distance between the motor guard and the pallet.

Make sure all screw connections are tightened properly. If one of the bolts is loose, tighten it well. Sometimes the vibration is caused by a damaged radiator fan. You can dismantle this element and check how the engine works without it.

The next stage is a gradual dismantling attachments and vibration detection during engine start and operation. As a rule, the problem is solved by replacing drive belt or balancing the pulley.

Another diagnostic method is to check the clutch basket and flywheel. We squeeze the clutch pedal completely, start the car, first engaging 1st gear, wait a few seconds and move the gearshift lever to neutral. Then take your foot off the pedal. If the vibration persists, the problem lies in the basket or flywheel.

Causes of vibration while driving

In such cases, it is necessary to carry out diagnostics of the gearbox and the chassis of the car. If the vibration of the car directly depends on the speed of movement, its source may be one of the nodes located after the driven shaft of the transmission. Often the "culprits" of the problem are drive shafts, hubs, cardans, parts transfer case and wheels. If you only feel vibration when braking, check the condition of the brake drums and discs.

Sometimes the shaking is caused by installing too hard rubber. As a result, the wheels of the front axle are subjected to excessive load during braking. If vibration is felt at minimum speed, the rims need to be balanced. As a rule, shaking is accompanied by steering wheel beating.

In order to understand whether the vibration during acceleration is really caused by the imbalance of the front wheels, you can simply swap them with the wheels. rear axle... True, it would be much more appropriate to thoroughly diagnose special equipment... The wizard will install the appropriate weights. Only at the stand can the desired result be achieved, so it is undesirable to save on this.

conclusions

So, we tried to figure out together the main malfunctions that lead to vibration of the body or the engine when accelerating. Now you can diagnose yourself or go to a specialist. In any case, do not forget that serious shaking is a significant problem, and therefore we do not recommend ignoring such difficulties.

If the car vibrates along the body during acceleration, in motion, or even at idle engine speed, it is very important to quickly start looking for the cause. Otherwise, everything may end in an accident or failure of one of the expensive engine elements.

Don't forget about safety! If you decide to check the condition of individual engine parts with your own hands, you need to understand that they are often hot, so you can get serious burns.

On Hyundai Accent, engine vibration is not so common and usually indicates the need for car repair.

Engine vibration Hyundai Accent: reasons

Vibration of the engine of a Hyundai Accent car can manifest itself both when driving and at idle. The reasons may be as follows:

• Poor engine mounts. It is worthwhile to carefully study the reviews before placing a non-original spare part.
• Breakage of engine mounts (pillows).
• Uneven operation of the injectors.
• Cross member contact with motor.

It happens that the vibration of the engine passes by itself after some time.

Troit engine Hyundai Accent: reasons

If the engine vibrates, it is worth checking the injectors. If the reason is in them, you need to flush them, and also check if they have the same performance.

There may be several reasons why the engine on the Accent “troit”:

• Malfunctioning spark plugs.
• Poor quality fuel.
• Defective fuel pump.
• Fuel tank ventilation valve.

The reasons for this behavior are usually the same for cars with 8 and 16 valves.

How to replace engine mounts Hyundai Accent

Engine vibration is sometimes helped by different tightening of the engine mounts. On the forums, it is most often advised to slightly loosen the rear mount.

If the cause of vibration is damage to the supports, they must be replaced.

To replace the front engine support, you need to unscrew the three bolts of its fastening, remove the support and install a new one. Work is done on a pit or lift.

When installing the support, it is better to use new bolts, as the threads of the old ones are often damaged during removal.

Replacing the rear support is similar. The only difference is that there are four bolts. If it is difficult to loosen, the bolts can be sprayed with WD-40.

Replacing the right pillow is done as follows:

• We put a jack under the engine crankcase. This should be done through a spacer, such as a wooden block, to distribute the pressure.
• Unscrew the mount and move the power steering reservoir to the side.
• We unscrew the bolts securing the pillow to the engine and body and remove it.

To remove the left support, you will need to remove the battery and take its shelf aside, dismantle air filter, lay aside the clutch release hydraulic drive pipe. A jack must be placed under the engine, as in the case of the right support.

How much does the Hyundai Accent engine mount cost?

The cost of one engine mount for the Accent is from 600 to 1000 rubles.

The cost of replacing the pillows in the service will be from 1,500 rubles.

Many motorists are familiar with the problem when there is vibration when picking up speed. There are a lot of reasons for this phenomenon. Often, searching for a source can even drive the car enthusiast crazy. Let's look at the main reasons for shaking, because you really want the car to drive quietly and smoothly. In 75% of cases, the problem is detected and fixed, and the car owner can feel calm and comfortable again.

Vibrations: Don't Get Depressed

If the car shakes, and where the source is, it is unclear, do not panic. If the car is from 3 to 5 years old, then most likely, any components have worked out the resource allocated by the manufacturer and have worn out. This is how the iron "horses" show their age. When a shaking is detected, it is not worth taking a car to a service station for diagnostics - you can find the cause yourself.

Shakes the steering wheel when accelerating

Quite often, when driving on the steering wheel, strong vibration occurs when accelerating. At first, it is barely noticeable, but over time it becomes more noticeable. This can cause serious damage and lead to an accident.

The first step is to check the wheel balance. To do this, you can go to the nearest tire fitting. If your wheels are out of balance, this is one of the popular reasons for shaking when picking up speed. It won't be expensive to fix the problem. Sometimes the disc becomes clogged with dirt or snow, then these beats can occur and stop. Determine the presence of dirt in the case of alloy wheels very simple, but in steel, where the ventilation holes are small, it is difficult. Dirt collects inside the part.

The need for balancing

Neither tires nor wheels are perfect in terms of geometry and composition.
So, due to the different mass in different parts of the wheel, those places where the weight is greater will pull on the wheel axle. When high revs the effort will be transmitted to the rods, then to the steering wheel.

Balancing is very important from time to time. Especially after changing tires or discs. Using this procedure, you can equalize the wheel weights at each point. Using a car with unbalanced wheels can lead to rapid wear on the chassis and suspension, a problem that is harder to fix.

If the balance is out of order

The main symptoms are a slight shaking of the whole car when accelerating. If you have not changed the wheels, if the rims are perfectly flat, and the driving style is neat, but with all this, there is a strange vibration when accelerating, then this is exactly the problem.

Do not think that if the beating is felt on the steering wheel, then only the front wheels need to be balanced. It is better to do this operation on all four.

Warped disc or damaged tire

Often, after diagnostic procedures, it is possible to find out another reason for the beats - wheel curves. This can be determined by any tire specialist at a special stand. If, when testing a wheel on a test bench, it jumps, then it's time to start worrying. It is important to see if the disc is bouncing with the tire. Jumping? The disc is to blame, no? This means a tire for replacement.

Pressure inside

Less commonly, vibration during acceleration occurs due to insufficient pressure.
It is very easy to diagnose and fix.

Loose wheel mounts

This problem is also easy to fix and diagnose. This is a simple but very dangerous reason. The mountings can be loosened even on one wheel, and this is enough to cause shaking. If the problem is not resolved in time, emergency situations are possible. If the wheel flies off while driving, the repair will be quite expensive - you will have to replace the disc and hub,

The symptoms in this case are very similar to vibrations due to tires or bent discs. But here there is a cyclicality, though not at all speeds.

Camber-convergence

If the wheel is set at the wrong angle, this is also one of the reasons for unpleasant beating. Adjusting these angles - important process after body vibration is detected. What can be done to fix it? Adjust wheel alignment on a special stand. It is also recommended to replace the rubber if it can be seen that it is wearing incorrectly.

Checking the suspension and chassis

Vibration during acceleration can occur as a result of natural wear of struts or shock absorbers. The suspension stops working smoothly, which is one of the causes of the problem. This can be especially noticeable on uneven roads or when driving at speed.

Another popular cause for shaking is the support bearing on the strut. This part can be found on top, above the shock absorber. It is also checked from the front under the hood. If a worn bearing is found, it should be replaced and the problem will be solved.

Ball joints in most cases wear out due to traffic on poor quality roads. In our country, these details need to be changed very often. If you find play in the supports, then perhaps a replacement will be able to regain comfort.

Check and, if necessary, replace the tie rod ends. Over time, this mechanism develops backlash due to wear. Thanks to this tip, the wheels of the car can turn in parallel. Wear on the tips will cause shaking.

Vibration when accelerating

This is terrible, especially when you need to accelerate quickly, for example, if you need to overtake another car. Acceleration is often jerky and uneven when you press the pedal. It takes a few simple steps to make a correct diagnosis.

Check the oil level in the transmission. Unexpectedly, but low level transmission oil causes vibrations and shaking during acceleration. Also, the car can noticeably lose in dynamic performance. Jerks when you press the accelerator pedal - this can also be the result of a lack of oil.

Arises from anything. There are many reasons. But if you try, you can find them yourself and not pay for diagnostic services at the service station. But if suddenly you cannot figure it out on your own, do not postpone the decision indefinitely. This leads to bad consequences. With the help of simple steps, you will surely find the causes of vibrations in your car and eliminate them. Treat malfunctions with all seriousness, because a running problem can cause an accident.

There can be a huge variety of malfunctions in a car, and a specific breakdown does not always give specific signs of its presence. Drivers often complain about body shaking when accelerating or at a certain speed. There can be a lot of problems that determine this indicator. If your car has vibration during acceleration, you should view all possible options breakdowns and immediately replace the failed components.

By the nature of the vibration, it is not always possible to tell where the problem lies. On different cars only the steering column can vibrate, giving it to the driver, or the whole body can also shake. It all depends on the design, nature and degree of damage to components and assemblies that are worth changing. Let's take a look at the main causes of vibration during acceleration.

Examining wheels and chassis - the main cause of vibrations

The main indicator that the wheels or the drives of these very wheels are to blame for your problems is shaking at a certain speed. Often these are body vibrations in the range of 80-100 kilometers per hour, but sometimes the shaking may not pass even after 60 km / h, so in any case, you need to fully diagnose the chassis.

At the same time, it is not necessary to go to the service station and carry out expensive diagnostic operations. It is enough to apply all your knowledge and study each chassis unit for possible breakdowns. The most common problems in this case are the following:

• the wheel mounts are unscrewed, which causes vibration on one of the wheels;
• the brake disc is poorly fixed, at speed it begins to vibrate;
• the wheel drive shaft is bent - the body vibrates constantly, with an increase in speed, the vibration increases;
• damaged CV joints - this is the most frequent problemthat causes vibration on the body;
• damaged wheel bearings, which causes shaking at any speed.

The most common malfunction in this manifestation is the CV joints. To check their serviceability, it is enough to grasp the shaft with your hand and try to turn it. If the shaft has backlash more than a couple of millimeters, the CV joint must be replaced. It is interesting that vibrations of the car body during acceleration can cause both external and internal CV joints.

You can also easily identify a problem with this undercarriage mechanism by examining the anthers. If the rubber part of the boot breaks, you can safely talk about problems. this mechanism... If water, dust and dirt get into the CV joint, the node will not survive for more than a few days.

Camber and rubber quality are another reason for shaking

If the wheel alignment angle is incorrect, vibration, the machine moving to the side, uneven rubber eating and other unpleasant manifestations are possible. AT different models these problems manifest themselves in various ways. Adjusting the camber-toe angles is one of the first processes that must be performed after detecting such a nuisance as body vibration.

Also, problems can be caused by rubber that is worn out incorrectly, or a disc after a serious impact. The main processes that can be taken to eliminate body vibration in this case are as follows:

• adjustment of the wheel alignment angle at the station with the camber-convergence service;
• replacing rubber with visual indicators of uneven or excessive wear;
• replacing or repairing a disc that shows dents and irregularities in the rim;
• balancing wheels - often during operation, balancing weights fly off.

If the balance weights come off the wheel, it may well cause vibrations at speeds of 80 kilometers per hour. The problem is that it is simply impossible to determine this on your own and find out which wheel needs to be sent for balancing. Therefore, you have to go to the tire fitting and balance all the wheels of your car.

This is one of the cheapest and safest options for damage caused by vibration of the body or steering wheel during acceleration. Therefore, the first step is to check for such faults, and then translate suspicions into other options.

Engine mountings, tie rods and other problems

There is another group of problems that cause vibration during acceleration. These problems are difficult to collect in one bundle, because they are all different and arise for different reasons. Vibration often occurs when one of the engine mountings is broken. This can be easily verified by increasing the revs while shaking.

Also, the transmission can be the culprit for such a manifestation of problems. If the car starts to shake at 80 kilometers per hour, you can very easily check the fault of the checkpoint by doing the following procedures:

• accelerate to a speed of about 85 kilometers per hour;
• depress the clutch and watch the vibration change;
• engage the third gear and smoothly release the clutch;
• try accelerating from 50-55 kilometers per hour in the last gear.

If the nature of shaking does not change in all these experiments, the box has nothing to do with this problem. If there is more shaking when the gearbox is connected, you will have to check its involvement in this problem.

You can also check the automatic box. It is enough to switch the gearbox selector to modes 3, 2, D, N at a speed of about 85-90 kilometers per hour and observe the operation of the box itself and the change in vibrations. Often the box is not to blame for the vibration of the car body, but there are such cases.

Helpful Hints About Some possible reasons shaking look at the video:

Summing up

If you were unable to find the problem that caused the vibration of the body or steering wheel in your car during acceleration, you should contact a specialist. Do not leave this problem, because it can worsen and create travel conditions dangerous for the driver and passengers of the car. It is necessary to react as quickly as possible to all possible malfunctions and eliminate them by replacing the failed machine elements.

Often, you don't even have to go to the service station and use expensive diagnostics to determine the problem. It is enough to independently inspect the car and determine what problems caused the body vibration. Have you had similar problems in your experience, and what parts of the machine caused them?

An experienced motorist can easily distinguish between normal vibrations when picking up speed and a cause for serious concern. In the first case, an increase in the speed of the internal combustion engine and the speed of the car will inevitably leave an imprint on the level of comfort; in the second case, a specific malfunction will be the source of increased shaking.

Please note that these symptoms require diagnosis and immediate elimination. The point is not only in an unpleasant beating on the steering wheel and an increase in noise in the cabin, but also in a decrease in the level of directional stability and the likelihood of a malfunction progression. The latter factor can lead to costly repairs.

Let's start listing with the most common and common reasons.

Balancing required

Beating on the steering wheel and body of the car with increasing speed is inevitable if the wheels are not balanced. Uneven distribution of mass with respect to the center of the wheel disk leads to such consequences. The action of multidirectional centrifugal forces leads to the appearance of vibrations of different frequencies, which are felt in the passenger compartment as a beating.

The problem can manifest itself in the following cases:

• Installation new rubber... Replacing the rubber on the disks or changing the shoes of the new disks into old tires are necessarily accompanied by balancing. Even for the manufacturer, achieving ideal weight distribution and geometric parameters seems to be an extremely difficult task.
• Loss of old balancing weights. Especially typical for light alloy wheelswhere the weights are glued to inside disk. Recall that in the case of stamped wheel rims, the weights fit into the outer rim collar.
• Deformation of the rubber or disc due to hitting a deep pothole, strong impact on the curb and other similar obstacles.
• Natural imbalance. During operation, any wheel will lose the established balance. It is recommended to perform planned balancing every 15-20 thousand km.

CV joint

Another breeding ground for imbalance is often a hinge of equal angular velocities. Serves as a device for a movable joint of the drive shaft and the gearbox, which allows the transmission of torque in different planes (internal CV joint). At the other end of the drive shaft for articulation with the hub (outer CV joint).

Most often, the cause of vibrations lies precisely in the inner hinge. In the case of a tripod-type design, the development of rollers is observed. In especially severe cases, the bearing can even "crumble". It is also possible to produce a glass of tripod.

A torn boot, which can no longer protect against dirt and dust flying from under the wheels, can lead to such a malfunction. Therefore, periodically check the integrity of the CV joints anthers.

Drive shaft

Cardan

The problem is typical for cars with rear and four-wheel drive... The wear of the universal joint leads to the fact that vibration appears during acceleration. If you find yourself experiencing a similar problem, pay attention to the following elements:

• crosses;
• outboard bearing;
• directly cardan shaft... An unbalanced cardan will not only lead to runout, but also the subsequent destruction of the joints.

There were cases when the beating at speed was due to the backlash of the gearbox shank. You also need to pay attention to this.

Rubber

It is not uncommon for vibration when picking up speed appears due to the installation of poor-quality tires. Most often these are tires of budgetary and extra budgetary manufacturers. The peculiarity of such rubber is that when checking on a balancing stand, a discrepancy that causes discomfort when driving a car may not be noticed. In the second case, balancing only temporarily delays the reappearance of vibrations. Only replacing tires will help to cope with the problem.

The next reason for the appearance of unwanted vibrations is typical for owners whose car is shod with low-profile rubber. The side cord of such tires does not have the rigidity and elasticity that is inherent in civilian versions of tires. Therefore, prolonged downtime, especially in the warm season, can cause temporary deformation of the tire at the point of contact with the roadway. Therefore, for a short time after the start of movement, vibration may be observed during acceleration. The first kilometers should be covered with extreme caution.

Uneven wear

Asymmetric wear of the tread on the tire, the appearance of "bumps" will lead to the fact that the suspension elements will experience additional vibration load. Of course, the whole car will vibrate at speed.

Wheel bearing

If at speed there is not only vibration, but also a rumble, then it is safe to say that the wheel bearing has failed. The situation is quite normal, so at the beginning of the inception of the problem, the operation of the car will not cause any consequences. But it is not worth delaying the repair. Through the measure, a worn bearing can fly apart, which will certainly lead to disastrous consequences.

A wheel play indicates a malfunction of this unit. For diagnostics, hang out the wheels and shake each of them in the longitudinal and transverse directions. Backlash will be a signal for an early replacement.

Suspension and steering

Worn suspension elements cannot cause constant or periodic vibration when driving. Their purpose is to damp shocks that come from the roadway. Therefore, a car with a faulty suspension can prowl along the road, emit creaks or knocks when turning the steering wheel, dull or resonant "echoes" of overcoming obstacles.

But keep in mind that in the case of worn-out rubber products, hinge, elastic elements (ball bearings, thrust bearings, shock absorber struts, steering tips and others) runout, for example, from unbalanced rims will feel much stronger.

To safely drive a car, solving the problem is complex.

In the case of steering, variations in the design of the various systems do not lead to definitive conclusions. Of personal experience The author of the article recalls a case when the beating at speed (to a greater extent during braking) was caused by the steering rack guide sleeve, the so-called "binoculars".

Exploring the engine compartment and engine sounds

If you have determined that vibration is coming from under the hood, most likely the reason will be wrong job engine or mounting points for vibration-loaded elements.

ICE-related problems:

• Engine troika. Many car owners are faced with a situation when, when accelerating or driving in tightness, the engine begins to shake, while the thrust is much weaker than before. In this case, a comprehensive engine diagnostics is required. The problem may lie in the ignition system: worn-out spark plugs, GDP, module and other elements, the failure of which leads to misfiring in one or several cylinders at once. The valves may burn out, insufficient pressure fuel, etc.
  There are so many reasons that the topic deserves
• Engine support cushions. Vibration during acceleration will appear because an increase in the engine speed increases the centrifugal forces acting on the car body. When hard pressing the accelerator pedal "to the floor" can be noticeable impact. Made of tough rubber, even new cushions will cause vibrations.

Gearbox and clutch drive

It is also worth paying attention to the gearbox attachment points. Perhaps the reason may be hidden inside the gearbox housing. In the case of a manual transmission, for a more accurate diagnosis, you should pay attention to the factors of vibration or beating. If symptoms appear only in a certain speed mode, try to drive it alternately in different gears. For example, if vibration is noticeable at 70 km, first turn on 2nd gear, then 3rd (of course, if allowed gear ratios Checkpoint). This way you can more accurately identify the vibration-causing components in the transmission.

If there is a deformation of the input shaft in the gearbox, vibrations will be felt during acceleration in any gear.

An unbalanced flywheel can also cause the discussed symptoms. At the same time, it is worth paying attention to the clutch and release bearing.

If the car has automatic transmission, check the oil level and condition. Too low a value can be the fault of shocks and vibrations.

Exhaust system

An improperly secured engine exhaust system can cause perceptible vibrations in certain ranges of engine operation.

Painfully corny

If the body vibrates when picking up speed, you should not be upset and immediately count off a large amount for repairs. Below are common and not very common cases that can cause discomfort when driving: