How to check the nozzles on the engine and clean them yourself?

Owners of cars with injection enginesYou must know how to check the nozzles, because their high-quality work involves the proper operation of the internal combustion engine. Everyone can check and troubleshoot injectors themselves, while saving money on the service station.

Why do we need nozzles?

The main function of this element is the supply of fuel tocombustion chambers. And you need to give a certain amount of gasoline mixed with air. Only in this way can a flammable mixture form which will ignite in the combustion chamber. Given this, it is logical to assume that the injectors may be in trouble due to poor fuel. And this is true in 90% of cases. Car owners who pour bad gas into their car are often forced to clean or change this engine element. But for this you need to know how to check the nozzles correctly.

Injector fault indication

If the engine is unstable, it is impossible to say for sure what exactly is the cause of the malfunction. A comprehensive survey is needed: coils, spark plugs, engine compression, etc.

Before checking the injectors, observe if the following malfunctions exist:

1. Unstable work at idle.
2. Problems with the start.
3. Higher fuel consumption.
4. Loss of dynamics, lack of power during acceleration, jerks while driving.

If these problems are observed with your engine,the very time to check the health of the injectors. There are different ways to check the nozzle on the engine. Manufacturers are doing everything to facilitate access to the most "weak" places of the car. So there should be no problems.

How to check nozzles with a multimeter?

There is a special device for diagnostics -multimeter It is inexpensive and is available at any station. With its help, the battery, fuses and other elements of the engine system are usually checked. Instructions on how to check the injectors of VAZ and other car brands:

1. Open the manual and see which nozzles are used in your car - low or high impedance. It is necessary for accurate diagnosis.
2. Remove the wires from the injectors.
3. Take a multimeter and set it to the resistance measurement mode. Diagnostic wires now lead to the injectors.
4. Measure resistance.
5. Normal impedance at low impedance nozzles should be 2-5 ohms. The norm on high impedance nozzles is 12-17 ohms.

If you find values ​​on a multimeter,which do not fit into the specified range, this means that there is something wrong with the injectors. Usually an element that does not meet the normal resistance is removed and replaced with a new one.

Note that a multimeter is an extremely useful device,which is at any master who is engaged in electronics. It is used to measure the voltage in electronic circuits, the resistance of elements. If necessary, buy yourself such a device, because in any case you will need it when checking many engine elements.

Hearing test

Experienced drivers know how to check the injectors ondiesel or gasoline engine by ear. They don't even need a multimeter. For an inexperienced driver to make it difficult, but you can try. Listen carefully for the sounds coming from the cylinder block. The ringing sound indicates that the injectors are not working properly, which means they need to be checked and cleaned. Of course, the accuracy of this method of diagnosis is not worth explaining. In rare cases, it is possible to accurately diagnose a malfunction by ear.

Mechanical testing

Для проведения проверки этих элементов нужно special equipment, so it's difficult to carry it out yourself. Most of the auto repair shops have stands for checking the stability of the operation of the injectors, and with their help you can find out which thread is created during operation. That is, you can visually observe the "torch" spraying of gasoline (diesel fuel). If the fuel is sprayed unevenly, then problems in the operation of the engine are quite possible.

It is worth noting that this method is the most accurate, and it is guaranteed to detect the problem.

Nozzle cleaning

If in the process of diagnostics it was revealed that these elements work incorrectly, then they should be cleaned. You can do it yourself, without removing them from the engine.

Cleaning options:

1. Use additives for the engine. They are poured into the fuel tank, mixed with gasoline, and when it passes through the injectors, the additives clean them.
2. Some experienced motorists recommendperform monthly cleaning with pressure. To do this, you need to accelerate the car to a speed of 120 kilometers per hour on a flat road. In this mode, you need to drive about 10 kilometers and slow down.
3. Если вы не можете по любой причине ездить на this speed, then the same procedure can be done at idle. Turnovers must be kept at the level of 4-5 thousand. Note that this method is less effective compared to the above.

Even if in the process of engine operation is notthere are no problems, nozzles need to be cleaned every 35-40 thousand kilometers for preventive purposes. Given the quality of gasoline, which is bottled at many gas stations, injectors are an element that is one of the first to be repaired or replaced.

Fortunately, now you know how to check worknozzles, and fix them whenever possible. But in most cases, the detail is simply changed. These are inexpensive elements of the internal combustion engine, which are inexpensive and easy to change. So if you find problems with the operation of the injectors, you should not be particularly upset. Expensive such repairs will not cost.