The nozzle is the electromagnetic device of the engine power system, which is responsible for dosing the fuel supply in the intake manifold. Considering the impact of high temperature and low fuel quality, during operation within the nozzle may occur, having a similar lacquer structure. As a result, it poorly opens, which negatively affects the start of the engine and its power. To ensure the capacity of the nozzle, which means the optimal operation of the entire system of start-up and control the engine, you need to get rid of pollution. Definitely before taking on this important task, the nozzle must be removed.
If you feel the strength and enthusiasm with your own hands to do disassembly fuel injectorsIt makes sense to listen to the advice. Lovers to produce all manipulations with own car It is claimed that you need to cook: sets of screwdrivers, keys, power passages with a lever and a retainer, carbocliner and cloth. If you want to make the removal operation of this device perfectly and correctly, you should adhere to a certain order of its execution. So, proceed. First of all, the fuel ramp is removed along with all the nozzles, then when the spring bracket is simultaneously climbing, the wire block is disconnected. A screwdriver is taken, with which the retainer shifts along the ramp. Then the nozzles are removed from the ramp, which at the same time scrolls slightly. Next, using a flat screwdriver, you need to get rid of the sealing rings located on the electromagnetic device and sprayer housing. It is advisable to replace them with new ones. Special difficulties with the extraction of nozzles can have car owners equipped with diesel engines. This is caused by the specifics of the body structure and directly the engine: when moisture, the nozzles are accumulated to the head of the cylindrical block. Best disassembly of such nozzles to produce with special equipment in order not to lose a large amount of time on milling, welding and replacement supplies. It is safe to spend on all this, and the desired effect does not achieve. It happens that it is necessary to sacrifice all the nozzles, remove the head of the cylinder block and drill the faulty parts. Please note that the operation of fuel injectors occurs with high pressure. An unexpected fuel jet from nozzle nozzle can cause unsafe consequences and cause serious skin damage. Therefore, producing some actions with a device being under pressure, be alert, taking care that the fuel jet does not splash into your direction. If there is an opportunity, instruct professionals to check the pressure in the fuel system. If you take on this case yourself - observe precautions. Note that fuel injectors have a sufficiently long service life. Perhaps there is no need for their dismantling at all. How to decide on this case? To establish the feasibility of replacing the nozzles, first pay attention to the mileage. If it reached a mark above 100 thousand kilometers, the meaning in checking is probably there. Contact good specialists so that they qualitatively performed testing, disassembling and calibrating the nozzles in your car. We assume that exactly faulty fuel nozzles cause smoking and knocking sounds? The reason can be installed without disassembly. To do this, it will be necessary to lower the clamps and remove the air duct for a long time, located in the zone of the air cleaner and the intake manifold. When the plastic cover is removed from the top of the engine, secure the air duct on the previous position and clamp the clamps. Now the time to begin to remove the engine at high idling speed. And then carefully loosen the tightening of the fittings in turn, make it carefully, preferably adjacent zone to put up rags. As a rule, when the fitting of the faulty nozzle turns out, the knock and smoke disappear.Now we know everything about technology for removing and cleaning nozzles. These simple rules will help independently perform repairs that will be quite expensive on any hundred. The technology does not depend on the type and volume of the engines and is suitable for any models of cars.
Welcome!
Looking for instructions for replacing nozzles in the engine on the Injector cars "Samara" family? If yes! Then in this case, we will review today with detailed instructions By replacing the nozzles. For clarity, the stroke of the nozzles will be supported by photographs, and at the end of the article you will find a small video clip in which it is said about how quickly you can remove the nozzles from the car.
Summary:
Where are the nozzles?
The nozzles themselves are located on the fuel ramp in the amount of four pieces, that is, one nozzle spars the fuel strictly to one cylinder. Below is a photo of that fuel ramp and nozzles that are located on it. Nozzles are shown in red arrows.
When do you need to change the nozzles?
They are subject to replacement if:
- The engine of your car began to go worse.
- As well as if when the engine is running, the fuel consumption has risen.
- In case of malfunction nozzles, the engine is usually starting to start badly.
- After starting, the engine can also be unstable to keep turns on idling.
- An engine is still possible at your car, at idle will start working on larger speed.
- And in conclusion, with defective nozzles in the exhaust gases, the content of toxic substances increases.
How to replace nozzles on VAZ 2108-VAZ 21099?
Removal:
Note!
All four nozzles are removed and installed identically, so for clarity we will show the removal of only one nozzle!
1) At the very beginning of the operation, remove the fuel ramp from your car. (How to remove the ramp, see Article: "")
2) When the ramp is removed, put it on a flat surface and then from the nozzles you need disconnect the wire block.
Note!
In order to disconnect the wire block, squeeze the spring bracket which is secure and only after that disconnect it!
3) Now with a screwdriver, move the metal retainer in the direction of the ramp that secures the fuel injector.
Note!
Fully removing the fixator with the ramp is not necessary, it is enough just to shift it into the sidel!
5) Check in what state is the sealing ring of the nozzle body, and the sealing ring of the spray part of the fuel injector, for this:
Taking a screwdriver into the hands, make it up with it both sealing rings and check their condition.
Note!
If rings are in good conditionIn this case, they can not be thrown out, but to leave on the reserve and further use on a new nozzle. Before installing old rings, be sure to lubricate them motor Oil!
Installation:
Installing new nozzles occurs in the reverse order, that is:
1) First, the state of the nozzle sealing rings is checked.
Note!
The status of the rings is verified only if you are going to install a used nozzle on your car!
3) And in completing the fuel nozzle, the wire block is connected, and after the connection, the fuel ramp is installed in its place.
Additional video materials:
Just below, you will find a video in which the fuel injectors will be replaced in detail. And the most important thing is that the replacement will be carried out in fast mode, that is, without removing the throttle unit, in general, smorify the video:
(nozzles, fueling, pressure regulator, inlet valves, fuel ramp). First of all, it depends on the quality of the fuel, which has recently become higher, but it is still far from foreign analogues. By the way, in high-quality fuel there are additives that purify the motor combustion chamber and do not accumulate pollution throughout the fuel system.
Functions, types and principles of fuel injectors
Main function Injectors in any car is to ensure the dosage and timely administration of gasoline or diesel mixture in the motor combustion chamber. Depending on the fuel injection method used, the existing nozzles are divided into three types:
Electromagnetic nozzles. Applied by gasoline engines internal combustion, also S. direct injection. This type of nozzles is considered the easiest.
Electro-hydraulic nozzles. They have a more complex executive device. Used on diesel engines.
Piezoelectric nozzles. They are more improved. These nozzles are installed in newest engines with injection system COMMON RAIL. ("Total Rampa").
Fuel injectors have significant advantages compared to other cooking systems. fuel mixesThanks to this, they got a lot of distribution in modern engines. These advantages make it possible to increase power and environmental friendliness, making it easier to launch in different weather, and simplify maintenance.
Due to the use of low-quality fuel in the injection system, large troubles may occur. Repair of injectors or their replacement will require very high costs. Hence the relevance of the task in question: how to remove the nozzles and replace them with new ones.
The operation of fuel injectors can be divided into four stages:
1. The nozzle is closed, but pressure is valid for it;
2. When opening the nozzle, fuel injection begins;
3. The nozzle is fully open;
4. The nozzle is closed, and the fuel injection ends with it.
Causes of no-availability
Currently, nozzles are produced with high quality processing, for example, with a hole tolerance of 1 μm, which allows them to do about a billion cycles. The main factor in violations of their performance is pollution during operation, even despite the fact that the road is blocking filters with a size of more than 10-20 microns with all pollution.
Filters are installed in a place where the fuel line is located and the nozzle. The main cause of pollution consists in an inevitable presence of heavy particles in fuel. Most of all the dirt accumulates during the stitching of the motor. At this time, due to the fact that the engine heats the nozzle, its temperature is growing, and the cooling effect of fuel is missing.
Light fuel particles that are in the nozzle are evaporated, and heavy are deposited, like lacquer deposits, making less section in the calibrated channel. For instance, the deposits of 5 microns with a thickness of 5 microns reduce channel bandwidth by about 25%. The clogging of the holes in the nozzles interferes with the creation of the fuel mixture, the impermeability of the pressure regulator's lock valve is lost, and the high-pressure fuel pump in diesel engines reduces the performance of its work.
Symptoms of fuel injectors
- hindered motor launch;
Interruptions in the operation of the motor at idle and transition;
Failures during a very sharp pressing;
The power of the motor is reduced and the deterioration of overclocking dynamics is noticeably;
Increase fuel consumption;
Toxicity exhaust gases increases;
Detonation, created during the overclocking of the motor due to temperature growth in the combustion chamber;
Skip inflammation;
The formation of cotton in the graduation system;
Fault of the sensor controlling the level of oxygen, and breakage of the catalytic neutralizer.
When winter comes, and with it there is a low air temperature, the failure of the nozzles becomes especially noticeable - the cold motor is rarely immediately started. There are two methods for cleaning fuel injectors:
1. Cleaning nozzles without removing them from the motor;
2. Cleansing nozzles on an ultrasonic rack with their preceding.
The second method is considered more effective than cleaning without removing the nozzles. However, at the first method, not only nozzles are cleared, but also other parts of the system: ramp, intake and shut-off valves, high pressure pump and so on. If you contact the station to the specialists for cleaning, it will come out in a small amount. But for some domestic cars and foreign cars, the installation of new nozzles will be more profitable than the cleaning of old ones.
Procedure when replacing fuel injectors:
1. Drop the pressure in the fuel supply system. To do this, you need to remove safety valve. In case of relay fuel pump Or its connector, you need to run the motor and wait until it stalls.
2. It is necessary to de-energize the electrical devices of the machine, for which disconnect the battery terminals.
3. Disconnect the supply fuel line from the ramp with fuel injectors.
4. We dismantle the connectors from fuel injectors. We turn over the bolts that fix the ramp.
5. Remove the ramp and fuel injectors.
6. And disconnect the fuel injectors from the ramp.
7. Then set new nozzles. And in the case of cleaning, we remove the sealing rings from all the injectors and throw them away.
Before starting everything back, you need to wear new sealing rings on the nozzles. Also need rings and planting Nozzles Lubricate with new engine oil. Installation is carried out in reverse order. At the end of the installation, we carefully view the fuel system and make sure it is fully tight.
Obtaining knowledge and skills
Approaching the replacement of injectors, you need to have a certain luggage of knowledge that will help to spend all necessary work Unmistakably and without the appearance of new faults. On the Internet you will find a variety of videos with repair technology and replace nozzles for different models machines. In case you find required Material It did not work, you need to focus on the type of injection system used. With a similar arrangement of them on the motor, the fastening and joints will also be similar.
Video on request "How to remove nozzles" on a similar device will surely be able to help you solve your problem. When repairing the repair on its own, very good to have a detailed description, where there is all the necessary information about the sequence of actions, the characteristics of their implementation and required tool and devices. These guides can still be found on the Internet, but not always Russian-speaking.
What nozzles to apply to replace
The most famous manufacturers of fuel injectors for various injection systems of gasoline and diesel engines are considered firms Bosch. and Delphi.. In the absence of the possibility of buying and installing on the car original detailsThe acquisition of products of these companies will be the best option.
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.
Check and replace nozzles
Signs of nozzle faults:
Hindered engine launch;
Unstable engine operation;
The engine stalls at idle;
Increased speed crankshaft idling;
The engine does not develop full power;
Jerks and dips in the engine at the movement of the car;
Increased fuel consumption;
Increased CO and CH content in exhaust gases;
Calil ignition due to leakage nozzles.
You will need: Hexagon "on 5", screwdriver, key "on 17".
1. Remove the wire from the MINUS terminals rechargeable battery.
2. Remove the receiver from the inlet tube (see "Replacing the gaskets of the inlet pipe and the exhaust manifold" ).
3. Drain the coolant from the engine cooling system (see. "Replacing the coolant" ).
4. Reduce the pressure in the fuel system (see "Reduced Pressure Pressure").
5. Disconnect the connective block of the nozzle wiring harness.
6. Disconnect the vacuum hose from the fuel pressure regulator.
7. Remove the two screws fastening the fuel pressure regulator to the fuel ramp ...
8. ... and take him aside.
NOTE
If the fuel pressure regulator sealing ring remains in the ramp, remove it. Replaced elasticity or needed sealing ring.
9. Unscrew the fuel supply tube nut ...
10. ... and disconnect the tube from the fuel ramp. Replace the elasticity or needed sealing ring of the tube tip.
11. Remove the two fastening bolts of the fuel ramp ...
12. ... Remove the bolts along with the washers ...
13. ... and remove the fuel ramp along with the harness of the nozzles and nozzles.
A WARNING
If, when removing the fuel ramp, some nozzle remained in the inlet tube of the engine, replace its sealing rings and the retainer.
14. To check the nozzles, connect the fuel tube to the ramp and install the fuel pressure regulator. Connect the shirling wiring harness.
15. Lower the nozzles into transparent containers. The latter is more convenient to hang on the fuel ramp. Check the spraying of fuel injectors. To do this, turn on the starter. Nozzles should spray fuel with the correct cone. Each nozzle must have four jets ...
16. ... The amount of fuel supplied through the nozzles, in all four tanks should be the same (check with a measuring container). If any nozzle does not comply with these conditions, replace it.
17. Immediately after turning off the ignition, carefully inspect the nozzles. If any nozzle is noticeable from the sprayer, the leakage of the fuel is noticeable, which means that the nozzle is notching and it must be replaced.
18. If the nozzle does not spray fuel, check whether the power is supplied to it. To do this, disconnect a block from it with wires, connect the battery to the nozzle contacts directly and turn on the ignition. If in this case the nozzle spars the fuel, then a malfunction in the nozzle electrical circuit arose.
19. It is recommended to check the resistance of the windings of the nozzles. To do this, disconnect a block with wires from the nozzle (pre-disconnecting the wire from the terminal "minus" battery) and connect an ohmmeter into contacts.
He must show the resistance of 11-15 ohm. Otherwise, replace the nozzle.
20. Before replacing the nozzles reduce the pressure in the power system (see "Reduced pressure in the power system" in the "power system" subsection ).
21. Click on the spring lock and disconnect the wiring harness from the replaceable nozzle.
22. Slide the nozzle lock aside ...
23. ... and remove the nozzle from the fuel ramp. Similarly, replace the remaining defective nozzles.
NOTE
Check on all nozzles sealing rings from the side of the ramp ...
... and inlet tube. Replace cracked or losing the elasticity of the rings.
HELPFUL ADVICE
We recommend replacing the nozzles sealing rings every time the fuel ramp is removed, since in many cases a violation normal work The engine is caused by the lesions of the nozzles seals.
24. Install the nozzles, the fuel ramp in the reverse order. Before installation, smear the nozzle sealing rings in gasoline.
25. To replace the locks, poorly retaining the nozzles, move them to the recess under the bolt of the ramp fastening or on the edge of the ramp.
