Home Steering How to remove fuel injectors with. How to remove fuel injectors yourself. Before you start. Important

Steering

How to remove fuel injectors with. How to remove fuel injectors yourself. Before you start. Important

Common Rail engine nozzles sometimes need to be cleaned, repair or replaced. To do this, you need to remove them from the engine. As I did it, I will tell you in this article.

Before you start. Important.

Some nozzles have correction codes in the amount of fuel injected. Therefore, before removal, it is desirable to find out whether their nozzles have them. If you have or not there is an opportunity to get such information, it is better to remember which nozzle where it was, it would not be worse, and if there are no such codes, the places of installations are not fundamental, as in my case.

Looking under the hood, we most likely see the plastic dust-heat shield.

It holds on four screws. We unscrew them, remove the casing. Now we see the engine itself.

First, open the relay box and fuses under the hood and pulling relays fuel pump. This is to ensure that the diesel fuel does not flood the engine and the floor, if you suddenly need to turn on the ignition.

Then turn off the nozzle electrical connectors.

Withdrawn locking brackets, which fix the reverse hose connections.

How to remove nozzles?

Answer 1.

There is nothing terrible there. There are several nuances, I will try to describe the memory (filmed last year, something could already forget). If that, LEO will correct, he has more experience. From what should be paid attention to.

Caution with latches on the supply and drain fuel line. They are plastic, it will be a pity, if you break.
It is desirable when removing - installing nozzles to change O-Ring (sealing rings on nozzles). If my memory does not change, they can be different in color (they have different temperature modes) - those that are included in the intake manifold and those in Common Rail. It would be better not to confuse them in places.
Why better to put new ones? Americans are generally advised at any work to change all the rubber bands, falling along the road over three years - they have a challenge worth it much more than these rubber bands. If then it flies again to disassemble. Those rings, which are included in the Common Rail (fuel line feed directly nozzle) should keep tightness for fuel leakage outward. Under the intake pipeline on our resin-block is the graduation. It will be very insulting, if the car lights up due to the smoking item. However, we live in Russia and everything you need in science, in our country it is not always fair, therefore I, for example, I checked visually and to touch the condition of the rings and put the old (and what to do?).
To remove the Common Rail, you have to remove gas cables, kikdaun and cruise control. Careful with their tips - some can easily break and although it is not very scary - still insulting.
Cape Kickdown then will need to be adjusted. It is desirable before disassembly to wash the engine from the nozzles, because Otherwise, dirt can fall into the inlet pipeline.
In my opinion remove better aggregate - Injectors-Rail. Go out of the sockets of nozzles with a rather large force - this is normal.
It makes sense to prepare a vacuum cleaner in advance and after removing the nozzles to collect rubbish (the washing of the motor, unfortunately, does not remove it).
When the nozzles are disconnected, do not forget that the connectors are fastened with springs with brackets.
And before disassembly it would be better to disable the battery.
I also ask you to keep in mind that, as I already wrote, I still tried THF only against external pollution. Then I will report what was reached when washing inside.
Yes, if the engine is already running uneven, it would be nice to first unscrew the candles and see their condition. Injectors from those cylinders, candles in which they differ sharply from the rest special attention.
Work is advisable to be carried out clean. Although an additional filter is inserted into the inlet nozzle, any dirt is extremely undesirable. Maybe inside it, that then it will not be rinsed at all.

There are tens of thousands of automotive in Russia filling stationsHowever, not all of them can boast the presence of high-quality gasoline that meets all modern standards and standards. Often in the fuel are not only particles of dirt, but also various impurities (phenols, sulfur compounds, acids, lead, etc.). In addition, poor-quality gasoline is often characterized by low octane number. All these factors extremely negatively affect the operation of the engine as a whole, and the stability of its individual components in particular, significantly reducing the life of all motor nodes. That is why every car enthusiast must have an idea of \u200b\u200bhow to remove and clean the nozzles on the VAZ 2110. Do not immediately begin the execution of these works.

To clean the nozzles, it is necessary to resort only as a last resort, when there is no doubt in the unstable engine operation vehicle.

Symptoms indicating the need to clean the nozzles on the VAZ 2110:

There are problems with the start of the engine.
Increases flow rate fuel mixes.
Drops the power of the engine thrust.
While driving in winter time Year of the car periodically moves jerks.
Refuses one of the engine cylinders (the effect of the trim), etc.

The cleaning of nozzles must be carried out in the case of the appearance of one or more symptoms described above.

Options solving the problem

Today, every vehicle owner can stay at one of the three possible options for cleaning nozzles:

take advantage of automotive chemistry;
resort to the service station maintenance;
self remove and clean the nozzles on the VAZ 2110.

In our article we will end in detail exactly the third version of the issue of the issue. Self cleaning is safer and effective compared to the effect that comes after applying automotive chemistry. The economic benefit from cleaning the nozzles with their own hands is also an obvious fact if it takes into account the rates operating at the maintenance stations. It is recommended to conduct this procedure only if you have at least a general idea of internal device cars. Otherwise, cleaning the nozzles is advisable to trust the specialists.

Before starting work, you need to make sure that the engine of the vehicle has cooled.
Then from the fuel pump you need to disconnect the power wires for the complete de-energization it.
The next step is to maximize the pressure in the power supply system. To do this, the engine must be started, after which it will wait until he himself stalls on idling. This action should be repeated several times until the motor stops responding to attempts to start it.

Now you can proceed to dismantling the fuel ramp. To do this, it is necessary to pre-de-energ it, disconnect the fuel supply hoses from it and disconnect all electrical devices from it (idle and pressure regulators, the position sensor adjusting the air into the engine ( throttle valve)). After that, with the help of a hex manner, you need to unscrew the two fastening bolts and gently dismantle the fuel frame with nozzles. During the removal of the frame, it is necessary to monitor the lack of overcasts that can significantly complicate the dismantling procedure.
Next, you need to start removing the nozzles. To do this, you need to disconnect the fastening staples that lock the electrical connector (connector) and the fastening bracket that holds the nozzle at the seating area. In order to avoid dirt from entering the details, the nozzles removed is best to gently put on the dry rag, and their planting To cover something.

Rubber sealing rings before the procedure is recommended to remove, and after the completion of cleaning, install new ones. The cleaning of each nozzle is best to start with the purification of its nozzles from various deposits. It should also be paid to the funk-shaped surface on which coke-shaped resinous sediments can accumulate.
After that, you can move to the cleaning of the fuel mixture channel. For opening electromagnetic valve Fuel supply requires a power source, preferably not exceeding 5-7V. To do this, you can use an adjustable stabilized voltage source or charger from mobile phone. Suit I. accumulator battery In this case, in this case, the stress on the nozzle should be supplied through the incandescent lamp that performs the function of the current damper to exclude the likelihood that the nozzle winding will be burned.
The supply of electricity is carried out through two wires, into the gap of one of which you need to install the button, closing and opening the network, including and turning off that we imitate the operation of the nozzle in the engine under the action of pulsed electricity.

You can use a can be used as a cleaning fluid to supply the cleaning fluid to the nozzle channel in which the liquid is located intended for cleaning the carburetor.
For a sealing connection of the nozzle, the nozzle with a nozzle can be used a rubber tube, which must be securely fixed using a plastic clamp or any other available mounting on the nozzle of the spray and on the nozzle.
When everything is ready, you can start feeding electricity to open the nozzle, in parallel by pressing the canter to supply the washing fluid. After a while, the torch of the jet of the cleaner exiting the fuel sprayer should become uniform and well distinguishable, which indicates a successful removal of Nagara. The cleaning procedure is considered to be made.

Expected effect

If the nozzle cleaning procedure was carried out correctly, the fuel consumption will decrease, the engine power will increase, a smooth idle turn will appear, and the start of the cold motor will occur without any difficulty.

Helpful information

Practice shows that if they were replaced on the nozzles of other manufacturers (even well-proven brands, the volume of the fuel mixture consumed can significantly increase.

Video

The procedure for cleaning the injectors is presented in the video material:

Injector nozzles are composite element gasoline or diesel engine. This device is responsible for the high-precision dosage injection fuel under a certain pressure in the intake manifold or directly into the combustion chamber, which depends on constructive features and implementing the power unit of the power unit.

During the operation of any injector nozzle, they have a clogging property. On cars S. big mileage this device It may fail, since these elements operate under high temperatures, often fuel itself contains many impurities. As a result, inside the nozzle is covered with varnish sediments.

At the above reasons, the bandwidth is broken, problems can be observed both with opening and closure of nozzles, etc. In such conditions, the engine loses power, the fuel consumption increases, the cold start is complicated, smoking is noted. Taking into account the above, periodic necessity arises, as well as for replacement. Next, we will look at how to remove the nozzles yourself, and still talk about how to check removed nozzle.

Read in this article

When you need to check the injectors and the quality of the fuel injection

Fuel nozzles were originally designed for a sufficiently large service life (100-150 thousand km). In this case, low quality fuel and unreasonable replacement Fuel filters can lead to the need for cleaning after 30-40 thousand km. We add that for checking and cleaning the nozzles, there are methods that allow you to implement this procedure without removing them.

Accessive need to shoot elements for injection often occurs closer to 100 thousand kilometers traveled, since devices usually need not only in cleaning, but also in detail testing, the injectors calibration or even replacement. The main occasions to such a procedure can be considered enhanced, noticeable increased flow fuel unstable work Motor in different modes (both under load and in transition).

In some cases, it is enough to determine only one faulty element, which allows you to get rid of the malfunction without the need to remove all the nozzles from the engine at once. This is especially true for diesel engine, where disassembly is somewhat complicated relatively with analogs on gasoline. If briefly, each nozzle is simply turned off alternately. The moment when one of the injectors is disconnected and at the same time stopped the smoking of the motor, will indicate the need to remove and verify specific device Without the need to extract the rest.

Removing nozzles with a motor for diagnostics

On modern injector systems, the element is an electromagnetic device that opens by the command to skip part of the fuel. Most cars are installed on the fuel ramp (rail). The removal process may be somewhat different on the type and design of the internal combustion engine, you may also need different tools. Often, to remove fuel injectors, you must prepare:

screwdriver Set;
multiple keys;
pliers or Passatii;
carburetor cleaning agent;
rags or suitable rag;

Now let's consider in more detail the process and answer the question of how to remove the nozzles on the VAZ or on any other injection car. First you need to reduce the pressure in the fuel system. Many car models have a pressure regulator on the fuel rail. This regulator is the valve to be clicked. As a result, the fuel from the ramp exists outside, the pressure will fall.

Remember, nozzles are fuel under high pressure. For this reason, caution should be taken when working with the elements that are connected to the engine power system or are covered under fuel under pressure. The fact is that the jet of fuel can cause serious injuries.

Next, you need to remove the fuel ramp on which the nozzles are fixed. To dismantle, turn off connectors with wires that are fixed using a special retainer. The specified retainer is a spring bracket for which you want to click. Then it will be necessary to move the screwdriver along the ramp. Now the nozzles can be extracted.

Extraction is carried out by means of a slight turn or swaying device, after which a flat screwdriver requires to remove sealing rings. Rings are usually placed on the housing and on the sprayer. Note that after removing rubber sealing rings, nozzles are subject to replacement.

Disassembling nozzles on diesel and engines with direct injection

As for the need to remove diesel nozzles or similar devices on motors with direct injection, in this case the procedure is somewhat different. The main complexity is that elements for supplying fuel are "screwed" into the engine like spark plugs. Work in strong heating conditions often leads to the harness of nozzles to.

The device takes on the fact that the moisture falls into the well of the nozzle, the well is turned on after a breakthrough of the exhaust gases, the nagar is accumulated on the sealing ring, etc. The process of removing the nozzle on the diesel engine with the Common Rail system, as well as aggregates with direct injection Fuel involves the additional availability of special pullers (reverse hammer) and other tools.

The presence of tools and certain skills avoids frequent problems When you try to remove injectors into DVS with direct injection: damage to the threads of the nozzle, the destruction of the device's body, finding a part of the sprayer body into the CBC after the device is broken, etc.

In other words, the carving zaksats and the body can simply burst during dismantling. As a result, you have to drill the remaining parts, restore the thread and make a number of other manipulations. In some cases, after unprofessional removal, partial repair of the cylinder head can be needed. It should also be remembered that the nozzles themselves are expensive devices. Replacing the broken element will result in additional financial expenses.

How to check fuel injectors

There are many ways to check fuel injection devices, ranging from handicrafts and ending with special checks. diagnostic stands. For independent check Often, it is often possible to evaluate the ability of the device to open and close, make sure that nozzles do not "pour" or overflow the fuel, as well as visually evaluate the quality of the spraying of fuel (torch). To do this, the removed nozzle is powered by power, as well as a fuel or cleaner pumps through it.

We add that the diagnosis on professional equipment allows you to determine the accuracy of the triggering and the efficiency of each element by comparing with the rest. This approach provides a much more objective assessment of health and performance, since the operation of injection devices when checking on the stand simulates the operation of the specified elements on the motor in various modes.

Problems when removing the fuel injector from the diesel engine?

Diesel engine nozzles as the elements of the fuel system must function correctly. Faults of these parts violate general schemeon which diesel works. Many modern diesel engines equipped with fuel system cOMMON RAIL. Have a number of serious problems with that we have considered below.

This is mainly due to the problems caused by the accumulation of exhaust gases or the consequence of moisture entry leading to the block. Also, on these engines, as a result of the extension of copper washers, there are practically welding of sprayers to the head of the cylinder head under the influence of combustion products. With the further operation of the car, the situation is exacerbated by the fact that the body of the nozzle begins to accumulate to the GBC.

Removing diesel nozzles by independently without damaging the fastening thread and the nozzle itself, in which case it is impossible. We do not recommend to produce independent extraction of the nozzle, as this can lead not only to the removal of the GBC, but also to buying a new block head. Why can self-removing diesel injectors you can look at the photo.

Attempt to independently remove diesel nozzle

	Independent removal of diesel nozzle. Broken thread fastening the nozzle. Further extraction of diesel nozzle only using special tools.
	Unsuccessful attempt to pull out a dyeshel nozzle from the block head.
	Depression thread fastening diesel nozzles.
	When she was trying to drill, but the attempt was not crowned with success. The nozzle remained standing in its place.

Problems when trying to independently get a scurrical nozzle of diesel:

Damaged or torn thread on the nozzles;

Burst the housing of the nozzle;

Zaking the nozzles in the well due to atmospheric moisture in the well;

Cocking the nozzles due to the breakthrough of gases and the formation of nagar in the well;

The housing remained the housing in the head of the cylinder block, etc.

How to remove diesel nozzard?

We carry out fast and high-quality, Mercedes, Opel, Renault, Nissan and many other cars. For many services, a serious problem is the removal of 4 and 5 nozzles Ssang Yong Cayron, Rexton, Action, however, we make their dismantling even without the need to remove the head of the cylinder block and the hood.

Removing diesel nozzles is made with the use of a special tool that allows you to reach the nozzle under any operating conditions.

Discontinued injectors

Having a lot of experience in we will make their removal of high quality and with smaller losses. In our work, we use a special hydraulic and thread-cutting tools European manufacturers.

A complete list of cars and engines on which we make removal of diesel nozzles.