How to clean and flush the throttle body? What is a throttle valve, and what does it “eat” with.

The function of regulating the air supply to the intake manifold of the power unit is performed by the DZ (throttle valve). Interacts:

1. WITH mechanical drive;
2. With electric motor.

These mechanisms are responsible for the timely opening and closing of the damper. Throttle body cleaning is done infrequently. Work must be carried out only when there are clear signs failure of this node.

What can indicate increased soot

The driver must know by what signs it is possible to determine a malfunction or malfunction of the unit. These include:

• Unstable, intermittent operation of the power unit. The car twitches at a speed of less than 20 km / h;
• "Floating" idle speed, power unit stalls;
• It is possible that the engine speed is hanging;
• Dips in engine speed to a complete stop;
• The engine is difficult to start.

In this regard, the question arises of how to clean the throttle valve, what means to use. So, everything is in order. There are two ways to resolve the issue. Clean the throttle with your own hands or contact the service station specialists.

On a note. When cleaning, you should be aware that the process in question is recommended to be performed after the run vehicle more than 100 thousand km.

In exceptional cases, the cleaning of the unit is carried out when the car runs after 30 thousand km. In order not to create confusion and vacillation in this matter, you should follow the manufacturer's recommendations.

Cleaning the node: stages and sequence of work

There are two cleaning options: without removing the unit and after dismantling. In the first case, the efficiency of carbon removal will be minimal. Cleaning without removal is carried out only in extreme cases, since carbon deposits are removed only from the damper, and deposits on the walls and air channels remain.

Complete cleaning gives more tangible effect. Work begins with the removal of the node, which is located between intake manifold and engine air filter.

On cars different manufacturers work may differ, but not significantly. On most vehicles, this happens as follows:

• the corrugation connects the damper with the air purification filter: it must be removed first;
• Next, turn off the throttle position sensor and absolute pressure(if available and installed on the car);
• then you need to squeeze out the load that fixes the accelerator pedal cable;
• dismantle (disconnect) pipes from the coolant. At this stage, the work must be carried out very carefully. If the power unit has not completely cooled down, then hot drops technical fluid if it comes into contact with human skin, it can cause a burn, remember this;
• Disconnecting the ventilation hoses crankcase gases and absorber;
• After that, you need to unscrew the fasteners throttle assembly and dismantle it.

After removing the mechanism, unscrew the idle speed regulator. Its washing and cleaning is highly desirable. To flush the entire assembly, you must use special tools.

Do not forget! Before flushing the assembly with chemicals, be sure to remove all rubber elements to prevent their deformation.

Throttle valve flushing is possible using budget detergents (Carbcleaner) and more effective, but expensive ones. Read about it below.

Cleaning products

When completely dismantled, you can use a budget option, which was mentioned earlier. But most often flushing is carried out with a carburetor cleaner: carbicliner. It qualitatively removes dirt and deposits in a couple of minutes.

For work, you need a brush with soft bristles, or a brush, with which, after applying the chemical, you need to clean the knot.

Important! After carrying out cleaning measures, be sure to blow out the throttle valve. To do this, use a compressor.

But even after the “general cleaning” problems can arise. Don't be scared, it happens. It may be found that after cleaning the throttle body, the speed floats. This is a solvable issue.

It is necessary to check the correct connection of the sensors. There may have been an error during the build phase. After the cleaning procedure, you need to adjust and adjust the throttle. Not all drivers are aware of this. Or the setup process is not performed correctly.

If the setting is made with violations, then it is possible that the sinking and the power unit will work on increased speed constantly. This leads to an increase in fuel consumption.

The reasons are the same: incorrect adjustment and an error when connecting the sensors.

When the electronic throttle has been cleaned, it needs to be adapted. The fact is that after work, the position of the damper changes. A the electronic unit control (ECU) does not know about it, continues to give out fuel, according to the previous indicators.

It is necessary to set new revolutions using diagnostic equipment, after resetting the old parameters.

Use chemicals to clear the entire node. Don't forget about remote sensing channels. Apply coolant (cleaning fluid) and let it soak in. This takes 5-10 minutes. Remove stubborn soot with a soft cloth.

The task of the throttle valve (hereinafter DZ) is to adjust the amount of air supplied to the intake manifold. Its position is adjusted in accordance with the position of the accelerator pedal. The damper drive can be mechanical (using a cable) and electronic (using an electric motor). The position of the remote control is fixed by a special sensor. It transmits the relevant information to, and it, in turn, decides on the amount of fuel supplied and the change in engine operating mode. You can read more details and functions in additional material on our website.

Signs of dirty throttle

In order not to confuse the symptoms indicating excessive carbon deposits on the damper, it is better to visually inspect it first, and if there are no visible oil or coked deposits on the walls of the throttle assembly, then, most likely, you will not fix the problem by cleaning the throttle.

themselves signs look like this:

• problem starting the engine;
• uneven engine operation;
• floating idling;
• freezing of engine speed;
• RPM dips to a complete stop.

Throttle Cleaning Errors

Many inexperienced car owners can perform improper cleaning of the throttle assembly, at least risking not getting the desired effect, and at the very least, completely harming and incapacitating the DZ. Therefore, it is important to understand when to do the procedure, how to do it and what means to use.

Dirty throttle

Clean Throttle

To properly clean the throttle body DO NOT:

1. Clean the damper in any incomprehensible situation (there are even jokes about this).
2. Clean the damper without removing it (the effectiveness of such cleaning is insignificant, since it is often possible only to remove carbon deposits on the damper itself, and the inner walls and air channels of the damper are not cleaned).
3. When cleaning with a rag, use excessive force, which can lead to damage both to the damper itself and to the adjacent one.
4. Use brushes instead soft materials. Such an error also quite often leads to a loss of DZ operability, since on some throttle nodes inner wall and damper covered with molybdenum for even smoother airflow. This layer is often confused with plaque and removed. As a result, the damper begins to either “bite” or let in excess air (revs increase).
5. Forget to train the throttle body after cleaning. Dampers with an electronic gas pedal need proper learning of the remote control in order to set the speed idle move to the required value.

Cleaning the throttle body on Mitsubishi and Nissan requires a special approach. It is necessary to act carefully and carefully so as not to remove the protective coating, the so-called "patch" - a sealing coating along the contour of the remote sensing. It is also mandatory for setting new engine operation parameters).

throttle body worth cleaning every 30-50 thousand km. Adhering to all the above recommendations and taking into account the main mistakes that inexperienced car owners make, there should be no more questions about how to clean the throttle, whether mechanical or. For cleaning, a minimum of fixtures and costs is required, just something: a carb cleaner and a clean rag, as well as a screwdriver to dismantle the assembly.

Cleaning algorithm

Now let's take a step-by-step cleaning algorithm throttle valve.

1. First of all, you need to get to the damper itself. IN different engines the design is varied. But as a rule, for this you need to remove the air duct that goes from the damper to air filter.
2. Remove the damper. To do this, unscrew a few fixing bolts (2-4 pieces), and also disconnect the necessary connectors (for example, the connector from the absorber purge valve).
3. For cleaning, use a carburetor cleaner. There is a wide variety of them, and in car dealerships you can easily find a tool in accordance with your preferences and capabilities (we will talk about them later).
4. With the help of rags and the mentioned means, it is necessary to carefully wipe the damper from the outside and inside.
5. Also needs to be cleaned protective grille(if available in your vehicle).
6. The node is assembled in the reverse order.

Remember that you need to clean the damper carefully so that the metal is as light as possible. This will ensure, after its installation, an increase in the dynamic characteristics of the machine.

The easy way to clean your throttle body

The right way to clean your throttle body

Cleaning without removing

Also, many car owners are interested in the question of how to clean the throttle without removing it. Such methods do exist, but you must immediately understand that high-quality cleaning is only possible by dismantling the damper.

To do this, you will need a special tool - a cleaner. intake tract. Can be used different brands. You can also use cleaning fluid, WD-40, solvents for cleaning.

So, procedure without removing the node:

1. As in the previous algorithm, you need to remove the air duct to get to the damper.
2. With the damper closed, spray the cleaning liquid onto the surface, and remove the cleaned dirt with a rag.
3. Open the damper and remove dirt from the side surface.
4. Try to get the cleaning agent into all channels. The cleaning procedure is similar with a rag.

We repeat once again that for high-quality cleaning, the throttle valve must be removed from the car. And when installing it back, it is advisable to change the damper gasket to a new one. Fortunately, its price is low.

According to the manufacturers of such tools, they need to be used every 7-10 thousand kilometers. It is necessary to clean the damper with dismantling every 30 ... 50 thousand kilometers.

It should also be remembered that in most cases after cleaning the throttle it is necessary to carry out actions for its "training". This procedure is carried out either using a computer (with its connection to the car's ECU), or by manipulating the ignition and gas pedal. IN this case It is impossible to give universal recommendations, since they can differ significantly for each manufacturer and even model. Remember this!

Causes of pollution and how to deal with them

There are several reasons why a throttle body gets dirty over time. By avoiding their appearance, you will automatically extend the time between cleaning it. The reasons mentioned include:

• Usage low-quality gasoline . If there is sediment in it, then it will definitely get into the throttle assembly, where it will turn into soot. So try to fill quality gasoline, and refuel at proven gas stations.
• Clogged fuel filter. If you do not change the fuel filter in time, then there is a possibility that pieces of dirt from it will fall into fuel system, including the throttle body.
• Dust and dirt entering the intake system. This may be caused different reasons- clogging of the air filter, damage to the integrity of the air duct, various mechanical influences.
• Crankcase gases with oil dust. They are the main reason oil deposits on the shutter. They can enter the combustion chamber through valve cover from . The situation is aggravated by the fact that they carry oil dust. It is she who burns out and remains in the form of a precipitate on the surface of the throttle valve.

Clogged fuel filter

Change air and fuel filters, fill in high-quality gasoline, and do not allow dust to enter the car's ventilation system. All this will save you from having to clean the throttle valve ahead of schedule.

How to clean the throttle body

There are a number of special tools designed to clean the surface of the throttle body. Some craftsmen use WD-40, acetone, thinners, and other similar compounds for this. In principle, they can be used, but the risk of damaging something inside the engine increases. Currently sold in car dealerships a large number of special means for carrying out the mentioned procedure. All of them are relatively inexpensive. Therefore, taking into account the fact that it is not necessary to clean the throttle valve so often, any car owner is able to purchase such a tool for himself.

The cost is indicated as of prices for the summer of 2017 for Moscow and the region

Results

If the faults described above occur, check the condition of the throttle valve. Its cleaning is not difficult. However, if you clean it, then dynamic characteristics machines to improve significantly. Therefore, do not forget to regularly clean the damper every 30 ... 50 thousand kilometers. As for cleaning products, use any of the above for this. Fortunately, they are inexpensive, so they are available to any motorist.

The classic throttle control via rigid rods or a flexible steel cable is slowly becoming a thing of the past. No one modern engine does not do without microcontrollers and compact electric drives, therefore, it is not surprising that the accelerator is also controlled by the engine control unit. Today we will try to dispel the conventional wisdom about the complexity of the electronic choke and talk about how to clean it yourself.

Device, principle of operation and advantages of the E-choke

The electronic throttle performs the same functions as the mechanical one - it regulates the amount of air entering the engine intake manifold. Structurally, it consists of a body with a throttle chamber and a damper mounted on a movable axis. The main differences are in the drive mechanism.

Previously, when you press the accelerator pedal, the driver set in motion a cable that turned the gas sector to the desired angle. Today, the rotation of the damper is controlled by an electric drive installed on its axis, and the degree of throttle opening is controlled by the command of the power unit control unit. Having lost its mechanical function, the gas pedal acts as an analog-to-digital converter - it monitors the degree of depression and the speed of movement of the driver's foot. In this case, the electronics controls the behavior of the accelerator pedal and analyzes many parameters of the engine.

The design has become more complex, and therefore less durable, right? However, in reality, the implementation electronic drive provided a number of advantages:

• electronic control prevents the risk of accidentally opening the throttle too high angle when starting off;
• setting the optimal ratio combustible mixture in all modes of operation, the device prevents the appearance of jerks and failures in the operation of the engine and contributes to its efficiency;
• working in tandem with ABS systems, EBD, ESP, etc. The E-throttle is an extremely convenient tool for timely changes in traction.

The mechanism of the electronic accelerator, on the contrary, has become simpler. So, there was no need for a mechanical idle speed controller with its diaphragms, valves and transition channels. In an electronic throttle, they are installed by turning the damper at a small angle. This happens at the command of the control unit, it is possible to program the degree of its opening depending on the temperature of the incoming air, the degree of heating of the engine, etc. For the same reason, the need for heating has disappeared throttle device, because of which it was possible to simplify the engine cooling system.

As for the mechanics of the drive of the electronic gas pedal, it consists of a simple gearbox, a pair of plastic gears and a low-power electric motor. The electronic accelerator control board delivers problems, which interprets the commands of the microcontroller and provides it with information about the position of the damper. If we talk about the reliability of the structure as a whole, then more often the problems associated with wrong work electronic gas pedal, disappear after thorough cleaning of the assembly from dirt and soot.

Causes and signs of throttle contamination

Since the design of electronic throttle valves does not differ from traditional devices, they require periodic cleaning of the throttle valve. About the need Maintenance The electronic gas pedal is indicated by the following symptoms:

• difficult start of the power unit;
• unstable engine operation;
• dips and jerks when trying to pick up speed;
• slow reaction when trying to increase or decrease speed.

The accelerated deposition of dirt and soot on the parts of the accelerator is facilitated by the operation of the car with a clogged fuel and air filter, damage to the air duct and long ride on poor quality fuel. But do not think that the contamination of the assembly occurs only due to insufficient attention to the car from the driver. The appearance of oil dust in crankcase gases due to wear leads to increased pollution. piston-cylinder group- in this case, only engine repair will correct the situation.

How to clean the electronic throttle without removing it from the car

Experts recommend servicing throttle valves with electronic control at least once a year or every 20 thousand kilometers. It is better to perform the damper cleaning procedure before the onset of autumn rains, which has a logical explanation. The point is that due to high humidity of the incoming air, dirt deposits on the drive parts, axles and flaps are softened. Because of this, the throttle sticks, which leads to the inability to control engine speed and can cause an accident.

On most cars of foreign and domestic production the electronic gas pedal drive is installed directly in front of the intake manifold. The availability of the mechanism and the ease of its maintenance make it possible to carry out preventive maintenance in just 15-20 minutes.

For this you will need:

• carburetor cleaner (replaced by gasoline, kerosene, diesel fuel, etc.);
• silicone lubricant in the form of a spray;
• rags;
• a screwdriver with a flat or cross-shaped sting (depending on the type of screws that are used to fasten the air supply pipe);
• a brush with hard bristles or a toothbrush;
• protective gloves.

It is better to do the work sequentially - this way you will avoid mistakes and be sure that you did everything right:

1. Using a screwdriver, loosen the clamps securing the air supply pipe and disconnect the corrugated hose from the body of the electronic accelerometer.
   
2. While pressing the throttle, turn it 90 degrees and move visual inspection. Dirt and soot on the walls of the case is reason enough to start cleaning immediately. Tar and soot deposits primarily clog the gap necessary for the engine to idle. Because of this, the speed becomes unstable, or the power unit completely stalls due to the cessation of air supply. In addition, touching the damper to a thick layer of soot causes it to seize and contributes to increased wear of plastic gears and other drive parts.
   
3. Lock the throttle in the open position. To do this, place an object of wood or plastic of suitable thickness between the damper and the inner wall of the housing - for example, the handle of the same screwdriver.
   
4. Before cleaning the knot, moisten it liberally with detergent inner walls and shutter. Pay special attention to those places of the throttle chamber through which the damper axis passes - the tar deposits accumulating there are precisely the reason for the wedging of the rotation unit. As a result, the throttle turns jerky and makes driving uncomfortable.
   
5. After 10-15 minutes to soften blockages, they are removed with a brush. If necessary, the process is repeated many times, achieving complete cleaning of the throttle. Keep in mind that on some car models, the walls of the throttle chamber are covered with a special molybdenum coating. The extremely smooth layer promotes laminar air flow in the duct and prevents soot from settling. Do not confuse this coating with soot and do not try to remove it. On the contrary, use gentle cleaning methods and ditch the hard brush in favor of a soft flannel cloth.
   
6. After achieving a soft, even sheen from the walls of the inner chamber, clean the end and rear side of the throttle valve.
7. Wipe parts and surfaces dry with a rag. Additionally blow the knot compressed air.
   
8. After cleaning the throttle body to electronic pedal strip worked gently and smoothly, apply silicone grease on the axle, damper and that part of the throttle chamber to which it adjoins.
   
9. Connect the air duct and tighten the clamps of its fastening.
   

After intervention in the assembly, the parameters of the throttle position will change, therefore, in some cases, it is trained. If (“float”, as auto mechanics say), then reset the controller’s volatile memory by briefly disconnecting the “positive” terminal from battery.

And the last thing I would like to remind you: at the first start, do not press the gas pedal until the engine warms up. Ensuring the operation of the engine at rated speed in a wide temperature range, you will allow the controller to adapt to changing conditions and set the idle settings to optimal values. In the future, this will make it possible to operate the car without any surprises from the throttle assembly.

Seal

Throttle valve in modern automobile gasoline engines is a device that, along with other systems, is responsible for adjusting the composition fuel-air mixture entering the cylinders for combustion. For different modes engine operation, a strictly defined qualitative and quantitative composition of the combustible mixture is necessary, and its violation can lead to precarious work engine in the appropriate modes, loss of power of the power plant and increased consumption fuel. That is why the full functional performance of the throttle valve is important, which can be impaired by contaminants during the operation of the car.

Why does the throttle body get dirty?
In addition to the fact that pollution itself is a natural process for any operating mechanism, the pollution intensity of the throttle valve is increased by the crankcase ventilation and exhaust gas recirculation system, which, in accordance with environmental requirements direct harmful substances for afterburning in fuel mixture. As a result of their work, a persistent coating of resinous deposits appears on the throttle.
How often should the throttle body be cleaned?
The throttle body should be cleaned as it gets dirty. On average, this can happen once every 30,000-50,000 km. You can determine its pollution by the following signs of a violation of the normal operation of the engine:

• unstable operation of the engine at idle with a periodic sharp decrease in speed and their subsequent sharp increase (the so-called "failures");
  
• jerks while driving at low speeds due to unstable operation of the idling system;
  
• the tendency of the car to stall when trying to move immediately after starting a cold engine.
  

In general, any change in normal operation engine idling can be caused precisely by contamination of the throttle valve. The thing here is that at idle the engine operates with an almost completely closed throttle and any changes in the flow area between the throttle and its body, which is necessary for stable idling, immediately affect the operation of the engine just at its idle.

To make sure that the throttle valve needs to be cleaned, it is necessary to remove the pipe going to the throttle valve from the air filter side and gently push the valve to move it to the position of partial or full opening. If at the same time pollution is clearly visible, then this unit needs to be cleaned.

How to clean the throttle body
There are no special difficulties in cleaning the throttle valve. Qualitatively conduct this procedure The only way to do this is to completely remove the throttle body from the engine. Let's consider the process of cleaning the throttle valve using the Duratec 1.8-liter engine of the Ford Focus car as an example.
After the actions taken, all problems with the engine idling that were associated with throttle contamination should disappear. Power point will make you happy again stable job at idle and under load during the transition from low to high speeds.

One of the most indispensable parts of every car is the throttle valve design. Despite its tiny size and invisibility, it is forced to fulfill a very important purpose by regulating the air supply to the intake manifold.

There are options with a mechanical drive or the presence of an electric motor, which is responsible for the timely opening and closing. The damper position is controlled by a sensor capable of transmitting the collected data to the electronic control unit. The received information is processed by the appropriate microprocessor, after which the operation of the power plant is adjusted.

With prolonged use of the vehicle in our climatic conditions the risk of damage to such a tiny but very important detail becomes the maximum. In order to prevent unforeseen phenomena, it is important to regularly clean the element from carbon deposits and other defects. If you do not respond to their appearance, this can cause a loss of engine power, poor ignition, and some other problems.

Malfunctions in the operation of the throttle structure are accompanied by the appearance of some symptoms, although they are not always caused by the formation of plaque or deposits. Often the problem is due to the usual damage to the throttle sensor, malfunctions drive system and other breakdowns. Among typical signs pollution is important to highlight the following:

When carefully checking the throttle assembly for faults, pay attention to the condition of the damper, even if it remains fully operational. Timely cleaning of the assembly can protect you from additional difficulties, maximizing the life of the mechanism.

Causes of pollution

The appearance of soot in a node is an inevitable process. This problem is due to several factors, including:

If a lot of such deposits form in the mechanism, most likely the device ceases to cope with its basic duties and begins to “jump” a lot. Further pollution causes a decrease in the estimated volume that should fall on the computer. In addition, carbon deposits can cause incomplete closing of the damper and the passage of excess air.

Important Tip: when removing the assembly, do not forget to clean the junction with the intake manifold, where you will have to place new gasket. If the assembly is completely dismantled, start the cleaning procedure.

In this case, you need to use special tool throttle body cleaner. If you do not have extensive financial opportunities, try to opt for the Carbcleaner tool, which is capable of effectively cleaning carbon deposits.

Before applying chemical solutions, make sure that all rubber elements on the throttle assembly are removed.

Basic cleaning rules

After thorough cleaning and drying of the throttle assembly, you can start assembling the engine in the reverse order.

If the motor still malfunctions after reassembly, the problem may be due to improper adjustment of the assembly. It is performed taking into account the type of control.

Throttle control systems

When it comes to models with mechanical control damper, most likely the motorist needs to reconfigure the idle speed controller. It is carried out in the following way:

Understanding the setting mechanical system control over the throttle assembly, it is necessary to provide the engine with 150-200 kilometers of work, which will allow normalizing idling.

Concerning electrical models, then they are configured as follows:

When performing this action, follow the established guidelines and avoid irreparable errors.

Cleaner Liqui Moly

The product is based on a special active solvent that performs a comprehensive cleaning of typical dirt, deposits and deposits that accumulate at the intake and throttle valves in cars with petrol units. It can dissolve and remove all deposits such as oil, resin, glue and others.

In addition, it provides reliable cleaning of injectors and internal parts, ensuring maximum functionality and mobility of parts. At the same time, fuel consumption indicators are reduced. The option is only suitable for gasoline units.

The product is sold in an aerosol package based on a mixture of solvents. It is applied to the surface, resulting in the dissolution, softening and cleaning of the throttle assembly from deposits. Among the advantages of such a substance:

• quick and productive cleaning of the node;
• no mandatory need to dismantle the damper;
• simplicity and economy of operation;
• compatibility with catalysts;
• the presence of a probe with a sprayer in the kit;

With timely application Liqui Moly you will be able to effectively get rid of all kinds of defects on the dampers.

WD-40

On the shelves car shops you can find many blue jars with the inscription WD-40. Unfortunately, not all motorists know what is contained inside such containers.

But they are a highly effective tool for precise processing of the most hard-to-reach places such as a hub nut that has corroded and won't come loose. Along with the jar, a red thin tube is included, which is necessary for a more thorough cleaning of the structure.

As for the history of matter, it goes back to 1958. The first version of the tool was introduced in California. Among the main purposes were:

• protective functions to protect the structure from rust;
• moisture repellency;
• breaking rust formations to loosen rusted nuts and bolts;

The true composition of VD-40 is not a trade secret, so any information of interest can be found on the Web. It is known that it comprises:

The main scope of application is automotive service centers where it is necessary to loosen rusted connections, especially when cleaning throttle bodies. With the help of such a substance, you can quickly and efficiently unscrew almost any nut. Probably every self-respecting car owner has a jar of such a tool in his tool kit or in the trunk.