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 requires a strictly defined qualitative and quantitative composition combustible mixture 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 full functionality is important. throttle valve, which can be disturbed by contaminants during the operation of the vehicle.
Why does the throttle body get dirty?
In addition to the fact that pollution in itself is a natural process for any working mechanism, the intensity of pollution of the throttle valve is increased by the ventilation system. crankcase gases and exhaust gas recirculation, which, in accordance with environmental requirements direct harmful substances for afterburning into the 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 system idle move;
- the tendency of the car to stall when trying to move immediately after starting a cold engine.
To make sure that the throttle valve needs to be cleaned, it is necessary to remove the pipe going to the throttle valve on the side air filter and gently press the damper 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.
throttle valve- This is a damper that is directly connected to the gas pedal of the car. Throttles and gas pedals modern cars electronic.
The main elements of the throttle
How is the engine speed controlled by the driver? By pressing on the gas, he opens the throttle, increasing the diameter of the space through which the engine is supplied with air. The more air enters the engine, the more the engine ECU (computer) supplies fuel, while maintaining the required air / gasoline ratio. Big mass air- fuel mixture leads to an instant increase in speed (and power, respectively).
Why do you need to clean the throttle body?
Checking operation after cleaning
So, the throttle valve is a kind of "breathing organ" of the engine. Together with the air environment it gets dust that managed to bypass the air filter.
Also in the engine there is such a system as a crankcase gas recirculation system. Gases accumulate in the crankcase, consisting of oil dust, exhaust gases, and fuel that has not had time to burn in the cylinders.
In accordance with modern environmental requirements, the designers decided to send these gases back to the cylinders in order to burn them out. The gases pass through the oil separator, but a small percentage of the oil still remains in them. Their path to the cylinders just lies through the throttle valve.
Settling dust
Settling dust
That's where it happens mixing oil dust with ordinary dust. This black, sticky mass settles in the working space of the throttle, through which air enters the engine.
The resulting layer affects the diameter, and hence the throughput throttle. This affects the operation of the engine, its reaction to a sharp pressing of the gas pedal. In addition, the oily mixture can get into the KXX, which adversely affects the idle speed. Therefore, it is necessary to clean the throttle from unwanted formations inside it.
Symptoms that may occur with a clogged throttle
- With a clogged throttle valve, there is some sluggish response to the gas pedal . An engine with a clean throttle responds to pressing the accelerator much more lively.
- Dirt buildup in the throttle restricts airflow and can cause unsmooth operation of the engine at idle, the revolutions “float”.
- May be observed car jerking at low rpm and speed
- At very high degree contamination, unauthorized shutdowns of the engine are possible, i.e. car stalls .
- Fuel consumption. The ECU (computer) of the engine, recognizing too little air flow, increases idling, thereby increasing fuel consumption .
What to do so that the damper does not become dirty too quickly
Its condition will depend on the frequency of replacing the air filter, the use of high-quality ICE oils, and serviceability of the oil separator of the crankcase gas recirculation system. In general, the cleaning procedure is not time-consuming and not expensive. Therefore, if the above symptoms occur, and simply, when passing through maintenance, it is recommended to check the condition of the throttle. The resource at the node itself is very high, but it is worth keeping an eye on it, as it performs quite important and delicate work.
Quick Throttle Way
Conclusion
Throttle valve contamination is a natural phenomenon for it. The throttle is cleaned, depending on the operating conditions, quite rarely, about once every 100 thousand kilometers. The degree of contamination is easy to determine by eye, and if the metal inside is covered with a black greasy layer of dirt, then it's time to clean it.
Most domestic drivers are already accustomed to doing minor car repairs at home. Bleeding the brakes, changing the oil - no self-respecting motorist will deny himself the pleasure of “digging around” under the hood of his car. The same applies to such a simple operation as cleaning the throttle. How to do all the work correctly and what tools should be used, we will consider later in the article.
1 When you need to flush the throttle body
Initially, we should understand the design of the throttle valve and its principles of operation. This item is in front of intake manifold car and is responsible for the passage of air inside it. Accordingly, the wider the damper is open, the large quantity air passes into the engine of the machine. Next, the air mass is mixed with fuel and sent to the combustion chamber of the car. Thus - the more air is mixed with fuel, the higher the power rating. vehicle. By pressing the accelerator pedal, the driver directs. The gas pedal of the car is connected to the throttle valve with a special cable and works according to mechanical principle. However, today on the market you can find cars equipped with air damper with manual drive.
The throttle valve is one of the few parts that may be needed very rarely. The period of operation of the element is equal to the period of use of the vehicle itself. It is necessary to change the part only when it has received mechanical damage. Throttle valve flushing is required much more often. It is worth performing this operation approximately once every 6-12 months. Such a need is directly related to the ingress of all kinds of gases and dust from the crankcase protection onto the body and inside the part, as well as a large number oils from other machine parts.
The first signs that your car needs a throttle body cleaning are:
- unstable start of the engine of the machine;
- intermittent idling of the engine;
- the car often twitches when driving in initial gears;
- the machine “falls through” when operating with fast gear shifting.
Having discovered such behavior in your car, you should not immediately run to the nearest MOT to replace parts. All we need is to clean the existing throttle body. This operation is quite within the power of each owner of the car.
2 Throttle valve cleaning technique
3 How to flush the throttle
Cleaning the throttle body does not require special equipment. Aerosol is best for this. Liqui Moly . This tool perfectly removes dirt on the surface and inside the device. To wash the part, it is enough to treat it with an aerosol and leave for 15 minutes. After that, wash off detergent damp cloth and wipe dry.
Another good decision will be the use of funds Carb Medic. It has a strong smell, so before cleaning the throttle body with this spray, it is worth putting on a protective mask. Next, carefully spray the part with the composition and leave for 30 minutes. After that, rinse with a damp cloth.
As we have seen, there is nothing complicated in flushing the throttle valve. The main desire. And your car will thank you a good indicator power and enjoyable driving experience.
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Many car owners, out of habit, carry out minor repairs to their cars at home, on their own. , antifreeze, - well, what self-respecting "carrier" will deny himself the pleasure of digging in the car. The same applies to such minor repairs like cleaning the throttle body in a car carburetor. We will tell you how to clean the throttle valve at home in our article.
What is a throttle valve for?
Initially, you should understand the principle of its operation, as well as having examined the mechanism, then, if checking the throttle valve found contamination, we proceed to the procedure for cleaning it. The throttle valve is located in front of the intake manifold. It is designed to allow air to enter the manifold, respectively, the more the damper is open, the better patency air flow. Air, mixing with fuel, enters the combustion chamber, thus, the larger the volume of the air-fuel mixture, the higher the generated power. By pressing the accelerator pedal, the driver controls the process of opening and closing the throttle, that is, by adjusting the position of the throttle. The gas pedal connects the gas cable to the damper by means of a mechanical drive. Although at present, manual air dampers are found in car designs.
When to repair?
The throttle valve is one of those parts of a car that requires repair less often than others, its service life is equal to the life of the car itself. Thus, the replacement of the throttle valve is extremely rare, and only in cases where it has mechanical damage. But as for pollution, they are expressed in the presence of oil stains, deposits, both on the damper itself and on its body. The causes of such pollution are the so-called oil dust, crankcase gases.
The first signs of contamination on the throttle body are:
- floating idle speed;
- twitching of the car at low speeds;
- failures at idle.
If your car has such symptoms, you should remember that the throttle valve is not required to be replaced, but cleaning from contaminants is necessary.
Washing technique
And so, consider the question of how to flush the throttle and what is the algorithm of work. First you need to dismantle the mechanism, it consists in the fact that the throttle body must be freed from the air corrugation. Remember that with a mechanical drive, the gas pedal is a throttle control. That is, in order to disconnect the gas cable from the mechanical throttle drive, it is enough to push out the “weight” by pressing the gas pedal. Next, we disconnect the coolant hoses, while observing safety precautions, that is, we perform all the work that is called “cold” in order to avoid burns and injuries. After disconnecting the hoses, check that all fluid has flowed out. After the housing is released, the throttle valve gasket and the valve itself are dismantled. It is usually fastened with two bolts or nuts, by unscrewing which the throttle valve is released. After removing the gasket, it is necessary to check the presence of its residues on the intake manifold. In the presence of contamination, we clean the base of the intake manifold. In addition, it is not recommended to use an old gasket after flushing; it is best to purchase a new one. A slightly different approach requires replacing the throttle sensor.
How to clean
Throttle valve flushing is not required specialized funds and fixtures, enough aerosols and rags. Spray on the surface to be cleaned. Leave for 15 minutes, then clean with a rag hard-to-reach places. Do not fill the entire damper body with liquid, as it is very aggressive to plastic and rubber elements, and can also damage the TPC sensor. Also, do not use all kinds of brushes during cleaning, as they can damage the special protective layer, which is applied to the inner walls of the throttle body. In addition, the brush may damage the sealing coating located along the throttle contour.
Video - "How to clean the throttle"
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 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 unit management. 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:
Upon careful examination throttle assembly for faults, pay attention to the condition of the damper, even if it remains fully functional. 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 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 of 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 machining of the most inaccessible places, such as a hub nut that has succumbed to rust and now cannot be unscrewed. 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.
