VAZ 21124 injector cleaning

When is injector cleaning necessary?

In order to understand the condition of the injectors, you need to clearly listen to the “whispering” of your engine:

increased fuel consumption (consumption rates),
"triple" of the engine,
unstable operation at idle,
breakdowns during engine operation.

These symptoms should alert you and make you think about the stable operation of the system as a whole.

Frequency of cleaning injectors

There is no specific point in time that would indicate the frequency of their cleaning. Remember that if nothing bothers you about the operation of the engine, then there is definitely nothing that needs to be repaired. However, if symptoms appear, it is best to first carry out an analysis and determine the exact cause of the problem.

What will cleaning do?

When the injectors are cleaned, you will immediately feel changes in the operation of the engine. However, note that this depends on the amount of carbon deposits and instability before the cleaning process. Therefore, the more contaminants there are, the better the cleaning is done, the greater the chance of getting serviceable injectors.

Self-cleaning of VAZ 2110 injectors. How to wash the injectors with your own hands

Author: ides · Published 07/12/2016 · Updated 07/12/2016

Cleaning injectors

refers to those types of work that need to be done only in case of emergency, that is, according to the principle “don’t touch it while it’s quiet.” This is not surprising, given the fact that the ramp in which the injectors are located and, in principle, the injectors themselves can be called the heart of a car engine. Therefore, it is recommended to clean injectors only as a last resort, for example, when problems occur with starting the engine, increased fuel consumption, tripping or a sharp drop in power.

Cleaning engine injectors

This method is not the actual cleaning of the injectors, but it fully allows you to get rid of deposits on them without resorting to dismantling them.

First of all, this is much faster, but on the other hand, the result is not always effective. However, as VAZ-2112 car owners say, in some cases, this really helps.

Work process

A compressor is connected to the system, similar to that described earlier, which is capable of increasing the pressure in the ramp to 3.2 atmospheres. In parallel, we connect a purifier in a container of at least 1 liter. (Most often, special injector cleaners are used in metal containers - approx.).
Next, we start the engine and let it run for 10 minutes, after which we stop and let it rest for the same amount of time.
Then we start it again and, by re-gassing, pass the entire liter of liquid through the injectors.
When the engine stalls, change the spark plugs, which will become covered with soot.

The entire process of work in this way should not exceed one hour.

By the way, such work can render spark plugs unusable, so clean the injectors on the engine using old or spare spark plugs. Or guess the moment when you will change the spark plugs. We have already talked about the choice of spark plugs for 16-valve engines.

How to Clean Injectors on a VAZ 2110

How to properly service injectors on a VAZ 2110

The reliability of operation of the VAZ 2110 carburetor engine is largely due to the coordinated operation of fuel equipment, one of the main components of which is nozzles (injectors, nozzles). The technology for installing them on gasoline power units involves installing one unit per cylinder, which improves the quality of mixture formation and also improves engine efficiency.

Cleaning injectors with ultrasound

And another method that can be easily used to clean them is ultrasound.

Pros and cons of using ultrasound

There is still debate about how useful this method is, and there is no consensus on this. Some say that this method harms the injectors due to the destruction of the mesh, and that such work should only be combined with washing and dismantling. Others say that such work has a very good effect on the condition of the injectors and does not harm them in any way; moreover, the condition of ultrasonic cleaned injectors is comparable to new parts.

In any case, it is up to you to decide whether to use this method. The cost of such work at a car service is 2,000 rubles and takes about 4 hours.

Dismantling

Before replacing or cleaning the injectors, they will need to be removed from the fuel rail. To achieve this, the following activities are carried out:

Make sure the engine has cooled down properly. It is not safe to work on a hot engine;
Disconnect the power wires from the fuel pump to de-energize the device;
Try to reduce the pressure in the engine power system as much as possible. To do this, the engine starts, and then you need to wait until it stalls at idle speed;
Repeat this procedure several times until the car simply stops responding to turns of the ignition key;
That's it, now our goal is the fuel rail. To remove it, you must first remove the terminals from the battery, turn off the power to the ramp itself, disconnect the fuel supply hoses, and also disconnect all electrical appliances going to it. These are pressure, idle, throttle position sensors;
If you have an 8-valve engine, then you do not need to remove the receiver. This step is relevant for engines with 16 valves;
Experts do not recommend removing the intake manifold without dismantling the throttle valve and the hose going to it. It is better to unscrew and disconnect everything at once, which will allow you to continue working more conveniently;
Cover the exhaust manifold openings with something to protect them from foreign objects;
Using a hex wrench, you can unscrew a couple of bolts and remove the fuel rail along with the injectors;
Make sure that there are no distortions when removing the ramp, otherwise problems may arise with the dismantling processes;
We remove the injectors. To do this, remove the mounting brackets that hold the electrical connector. You also need to remove the bracket that holds the injector in its seat.

After dismantling the elements, be sure to close the seats to prevent debris and other objects from getting in, and place the nozzles themselves on a table or floor, after laying down a dry rag.

Here you can decide whether to change or clean the elements of the fuel system. If replacement is required, install new injectors in place of the old ones and follow the assembly procedure.

Cleaning

Here proceed as follows.

Remove the rubber rings from the injectors, and when cleaning is finished, replace them with new seals.
The cleaning process should begin with the nozzles, on which various deposits form as the car is used.
Be sure to thoroughly clean the funnel-shaped surfaces where tar deposits accumulate.
The next step is the fuel mixture supply channels.
To open the solenoid valve to supply fuel, you will have to trick the device with a 5-7 V power supply.
Some use stabilized voltage sources, phone chargers, or even a car battery. If using a battery, the voltage should be supplied through the light bulb. It will play the role of a current damper. Otherwise you risk burning the winding.
Electricity is supplied through two wires, in the gap of one of which a button is installed. It will close and open the network. This creates an imitation of the operation of an injector in an engine due to the influence of a pulsed electric charge.
You can supply the cleaning liquid to clean the injectors through a can of carburetor cleaner. Inexpensive and effective, even better than specialized chemicals.
Be sure to tightly connect the cylinder and nozzle with a rubber tube, clamps and any other means.
All is ready? You can then apply electricity to open the injector. At the same time, press the button on the cleaning agent canister.
Soon the torch of the liquid jet, which will exit through the fuel atomizer of the injector, will change its “clumsy” direction and will begin to uniformly exit the nozzle. This indicates that you have removed all carbon deposits.

Prices for cleaning injectors

In order to clean the injectors that have been removed and fixed on the ramp, you will need a total cost of about 500 rubles .
And to clean them in the service, you will pay about 2000 rubles , and this is the same as when cleaning with ultrasound.

Since such work does not pose any difficulty, it is much easier to do everything yourself.

Injector prices

If, after the cleaning and diagnostic procedure, you come to the conclusion that it is completely faulty and needs to be replaced, then it is worth noting that you should buy a strictly analog nozzle, with the part number indicated on its body. The average price for them is in the range of 1000-1500 rubles.

Cleaning on removed injectors

In order to clean the injectors, the first step is to remove them. How to quickly replace them is written in this article.

When the injectors are removed, you can proceed to cleaning them.

Connection diagram!

Since the nozzle opens at a power of 12V and 10W, it is necessary to make wire connections, the circuit of which will include a light bulb. It will thus act as a damper. You can make such a circuit using this diagram:
Detailed connection diagram.

Next, when everything is connected according to the diagram, we connect power to the injector, but leave the other end unpowered.
Since cleaning will be done under pressure, take care to ensure that all connections are properly secured. It is best to use hot melt glue.
The pipe to the sprayer is fixed with hot-melt adhesive.

Injector cleaning technology

First of all, remove the O-ring from the injector.
We put a pre-prepared rubber tube on its shank.
The entire structure is assembled.
Since the injectors do not have polarity, we connect the end switches of the wires to the battery.
Next, press the button in the cylinder and hold it until the pressure stabilizes and the hissing stops.
When it has stabilized, point the nozzle to the side and press the power button.
The nozzle is cleaned and the lamp lights up.
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We carry out steps 4 and 5 for each nozzle 2-3 times in a row.
If the nozzles were heavily contaminated, then after the first blowing the type and quality of the jet escaping from the nozzle will change.
After 2-3 cleaning attempts, inspect the spray state and if you are unable to achieve the desired result, continue spraying.
After cleaning is complete, install new O-rings and lubricate them with a small amount of gasoline. This will protect them from cracking and wear.

We recommend: Car service in Lyubertsy

In total, you will need about 3 hours to complete such work.

The difference before and after cleaning.