We clean the injector on the 16 valve VAZ-2112 with our own hands. Do-it-yourself cleaning of Priora injectors 16 valves

Replacing injectors on a Lada Priora car

Before we move on to describing the process of removing the injectors, you need to select everything you need for the job. Here is a list of tools and consumables:

• Phillips screwdriver;
• set of hex keys;
• set of open-end wrenches;
• pliers;
• wrench and set of socket heads;
• flat screwdriver.

Sequence of work

1. The block to which the wires of the Priora injectors are connected is manually disconnected and removed.

The block with wires on the Priora fuel rail is removed manually

The mounting fuel rail on the Priora can only be unscrewed with a Phillips screwdriver

The Priora fuel fitting should be unscrewed with only two keys

The O-rings from the Priora ramp should be removed so as not to lose them

The Priora ventilation hose can only be removed after loosening the clamp

It is convenient to loosen the Priora brake hose clamp with pliers

The Priora intake pipeline is held on top by only two nuts

After unscrewing the fasteners, you can simply pull the Priora pipeline towards you

Two 5-point screws on the Priora ramp can only be unscrewed with a hexagon

The Priora fuel rail is removed along with injectors and wires

The injector on the Priora can be unscrewed from the ramp manually

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.

Replacing injectors on a Lada Priora car

Before we move on to describing the process of removing the injectors, you need to select everything you need for the job. Here is a list of tools and consumables:

• Phillips screwdriver;
• set of hex keys;
• set of open-end wrenches;
• pliers;
• wrench and set of socket heads;
• flat screwdriver.

Sequence of work

1. The block to which the wires of the Priora injectors are connected is manually disconnected and removed.
   The block with wires on the Priora fuel rail is removed manually
2. Now use a Phillips screwdriver to unscrew the screw holding the pressure plate of the fuel pipe.
   The mounting fuel rail on the Priora can only be unscrewed with a Phillips screwdriver
3. Use a 17 wrench to unscrew the fuel pipe fitting.
   In this case, the tip of the tube must be held with a key at “22”, preventing it from turning. Without this, the fuel rail may break. The Priora fuel fitting should be unscrewed with only two keys
4. The fuel pipe is carefully removed from the ramp, and the sealing rings are removed from it.
   The O-rings from the Priora ramp should be removed so as not to lose them
5. Use a Phillips screwdriver to loosen the clamp on the crankcase ventilation hose.
   The hose is then manually disconnected from the cylinder block. The Priora ventilation hose can only be removed after loosening the clamp
6. The tube with lubricant level indicators is removed.
7. There is a hose on the intake manifold that goes to the vacuum brake booster.
   The clamp on this hose is loosened with pliers. It is convenient to loosen the Priora brake hose clamp with pliers
8. Use a socket head to “10” to unscrew a pair of nuts on the fastenings of the intake pipelines.
   The Priora intake pipeline is held on top by only two nuts
9. Then, using a “13” head, unscrew all the bolts on the lower fastening of the pipelines.
10. The pipeline, freed from the fasteners, is slightly lifted up and pulled towards itself. Access to the fuel rail is provided. After unscrewing the fasteners, you can simply pull the Priora pipeline towards you
11. The ramp is held on the cylinder block by two screws at “5”.
    They can only be unscrewed using a hex wrench. Two 5-point screws on the Priora ramp can only be unscrewed with a hexagon
12. After this, the ramp is removed from the cylinder block along with the injectors and wires.
    The Priora fuel rail is removed along with injectors and wires
13. Old injectors are unscrewed from the ramp and replaced with new ones.
    The injector on the Priora can be unscrewed from the ramp manually
14. After this, the fuel system is reassembled.

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.

1. Next, when everything is connected according to the diagram, we connect power to the injector, but leave the other end unpowered.
2. 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.

It will be useful: Why does the engine stall when cold?

The pipe to the sprayer is fixed with hot-melt adhesive.

Injector cleaning technology

1. First of all, remove the O-ring from the injector.
2. We put a pre-prepared rubber tube on its shank.

The entire structure is assembled.

The nozzle is cleaned and the lamp lights up.

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

The difference before and after cleaning.

How to check for faults

The car owner can independently check the performance of the injectors on his car. The procedure is quite simple and does not require special training or expensive equipment. In garage conditions, diagnostics can be performed with a set of open-end wrenches, screwdrivers and a tester with a resistance measurement mode.

Reasons indicating problems

Diagnostics must be performed not after any period of operation or mileage has expired, but in the presence of external manifestations of injector failures. In cases where other vehicle systems are operating normally, the following indicators indicate problems with the injection solenoid valves:

• at idle there is instability in engine speed;
• starting the engine is difficult - the engine may stall;
• when overclocking it is impossible to achieve the same dynamics;
• The amount of fuel consumed has noticeably increased.

Diagnostic procedure

1. Open the hood.
2. Unclip the plastic clips that secure the valve's power cable. Remove the connector.
3. Switch the tester to resistance measurement mode and take measurements of the windings of each of the injectors in turn. That is, you need to apply one contact of the tester to each of the five terminals, and the second one to the fifth wire for power.
4. Optimal resistance values ​​in all cases should be in the range of 11–15 ohms. If at least one pin shows deviations, it will be necessary to change the nozzle.

We clean the injectors on a 16-valve VAZ-2112 with our own hands: washing and chemicals

In modern conditions, when the quality of gasoline leaves much to be desired, cleaning the injectors on a car can become a mandatory procedure. So, closer to the mileage of 50 thousand kilometers, washing or replacing may become a mandatory operation.

The video shows the process of cleaning injectors on cars of the VAZ 2110-2112 family:

Replacing injectors on a 16-valve Lada Priora engine

As mentioned above, symptoms of injector malfunction include unstable engine operation, starting problems and increased gas mileage. To change the nozzle to a new element, you will have to spend a lot of time, since the replacement procedure is quite complicated.

As a working tool, it is recommended to immediately prepare:

• set of heads;
• set of open-end wrenches;
• Phillips-blade screwdriver.

After the car has stood for some time and cooled down, you can start working:

1. The plastic retainer of the harness must be pressed to the side with your finger to pull the bundle of wires out of the injector.
2. After which you will need to relieve the pressure in the car’s fuel system. The average pressure is approximately 380 kPa, that is, if work is carried out without bleeding, you can get injured due to sudden fuel emissions. To do this, you will need to open the rear door of the car and remove the seat from the back row.
3. There is a carpet under the seat, and under it there is a hatch to the gas tank.
4. Using a Phillips screwdriver, unscrew the two screws that secure the hatch cover to the panel and remove the cover.
5. From the fuel pump, which is located in the gas tank, you need to disconnect the power wire - the connector can be pulled out without difficulty.
6. After this, you need to start the car and wait until the engine stalls due to lack of gasoline.
7. Next, you need to run the starter for at least three seconds so that the pressure in the system equalizes.
8. Disconnect the cable from the negative terminal on the battery.
9. After which the procedure for removing the injectors is possible without risk. To begin, use a screwdriver to unscrew the decorative box on the engine.
10. Next, remove the screws securing the air filter box from the car body - it will prevent free access to the engine, so it is better to remove it immediately.
11. The wire connected to the throttle valve is disconnected from the intake manifold.
12. Next, you will need to disconnect all the lines that connect directly to the frame connectors. It will be necessary to prepare to remove the fuel frame - to do this, use a 10mm wrench to unscrew the bolts that secure the frame to the body.
13. Using a screwdriver, loosen the clamps on the ventilation and vacuum hoses and disconnect the hoses from the cylinder block.
14. The intake manifold is bolted to the cylinder head with three nuts - you will need to unscrew them to remove the intake manifold.
15. After which it will be possible to disconnect the injector harness.
16. The fitting through which fuel is supplied is disconnected from the engine compartment.
17. After this, you can remove the fuel pipe from the frame, and then dismantle the fuel frame along with the injectors that are located on it.
18. The injectors can be pryed off with a screwdriver - the fixing element is easily removed so that you can get to the valve itself.

Video: removal procedure

Thus, dismantling the injectors takes quite a lot of time, since you have to disassemble almost the entire engine compartment of the car. Installation of new injectors is carried out in the reverse order with the obligatory replacement of all rubber seals.

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.

Injectors installed on Priora

The Lada Priora car is equipped with imported injectors manufactured by the German company BOSCH. These devices are highly reliable. Their service life can reach 160 thousand kilometers. However, car service specialists strongly recommend changing injectors every 120 thousand km.

Almost all Prioras are equipped with German injectors from BOSCH

Injectors for 8 and 16 valve engines

You should know that the injectors of the 8-valve Priora engine are no different in appearance from the injectors of the 16-valve engine. These are all the same devices from BOSCH, consisting of a housing, a coil, a diffuser and a fuel grid. When choosing injectors for a Priora, you need to think not about the number of valves in the engine, but about its volume. Because the markings of injectors for 1.5 liter engines are different from the markings of injectors for 1.6 liter engines. In the first case, the BOSCH injector should be marked 0-280-158-110, in the second - 0-280-158-502. You can clarify the markings in the car’s operating instructions, at the end of which there is a summary table with digital designations of all BOSCH injectors depending on engine size.

Table of applicability of injectors for VAZ cars

Why do injectors clog?

Clogging is caused by the way the injectors operate. Of course, using low-quality fuel accelerates the process of deposit formation. But even the highest quality gasoline does not guarantee that over time the injectors will not begin to clog. The most unfavorable period is a few minutes after the engine has been turned off.

The injector body begins to get very hot from the engine. The process is further intensified due to the fact that the elements are not cooled by the passing air-fuel mixture, which is supplied to the cylinders during movement. Very high temperatures cause the evaporation of light fractions of fuel remaining in the system. And heavy fractions settle on surfaces and form a coating that is not dissolved by gasoline and is not washed off during further work.

Over time, the thickness of the deposits becomes such that it disrupts the normal operation of the system. The injectors do not spray, but pour fuel, the valve does not operate correctly. Manufacturers recommend changing parts every 120-140 thousand kilometers.

INJECTOR SET BOSCH 017 FOR LADA KALINA, PRIORA, CHEVROLET NIVA

Statistical flow at 3 bar, average n-Heptane - 105.7 g/min

Resistance - 12 Ohm

Fuel preparation - gasoline injection

The price is per set!

Catalog number: 0 280 158 017

Manufacturer: BOSCH

Specifications:

Statistical flow at 3 bar, average n-Heptane - 105.7 g/min

Resistance - 12 Ohm

Fuel preparation - gasoline injection

The price is per set!

Catalog number: 0 280 158 017

Manufacturer: BOSCH

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Purification process

Cleaning the nozzles itself should be done on a clean surface - for this you can cover the working surface with a piece of cloth.

Prepare a hose and a can for cleaning the carburetor. To flush, secure a plastic hose clamp at the inlet of the nozzle (make sure the length is at least 20 cm). The nozzle will need to be turned on, and the end of the hose itself will need to be lowered into the liquid that is used to flush the carburetor. Cleaning can be carried out by any of the proposed ones - RunWay, Liqui Moly or Hi-Gear.

But there is no need to add cleaning additives advertised on the market to the fuel: it very often happens that they harm the engine. The acidified dirt itself after such cleaning can create a blockage that will prevent normal access to the fuel-air mixture. Otherwise, fuel access may be blocked.

Cleaning is complete. Now do the installation in reverse order.

I decided to start cleaning the injectors on my car. The car ran no less, but so to speak, I decided to do preventive maintenance on cleaning the injectors on my car. The whole purchase began with Wynn's injector flushing fluid 1

Wynn's flushing liquids are used for washing injector nozzles without dismantling, cleaning the cylinder-piston group (partial removal of carbon deposits from the cylinder walls and sealing rings) as well as the exhaust system without harming the catalytic converter.

And since I did not want to remove the injectors from the engine, this was the flushing fluid that suited me as a flush. I once found information on the Internet about cleaning injectors in this way and decided to do the same operation without removing the injectors on my car. In general, for this I needed to buy some things that were necessary for this DIY flushing device. For this I needed:

For this I needed. 1. Flushing liquid 1l. 2. Fuel filter. 3. Clamps 2 pcs. 4. Two nipples. 5. Hose 12mm -1 meter. 6. Two liter bottle. 7. Drill 13 8. Compression pump

Flushing liquid 1l

Crankshaft position sensor (CPS)

Often the engine stalls due to problems with the DPKV. To check, you will have to remove this sensor from the engine. Be sure to mark its position on the engine.

After removal, you need to measure the resistance of the sensor inductive coil. The multimeter should show a resistance between 550 and 750 ohms. Anything more or less indicates a sensor malfunction. It needs to be replaced. There are other testing methods, but they are “difficult to apply” in a regular garage.

Now a short video with another reason.

What injectors are installed on Priora cars?

Injectors are an indispensable element in the operation of any power unit with continuous injection. Structurally, they are electromagnetic valves, which, when opening, ensure the supply (injection) of fuel in the required volume into the engine cylinders. At the same time, the main purpose of the part is to save fuel, so the valve opens at regular intervals, depending on the driving mode.

Have a red body

On "Priors" equipped with an injection type engine, imported injectors are installed. Products manufactured by Bosch and Siemens are characterized by a high degree of reliability and wear resistance. Their service life is determined by a mileage of 100–150 thousand kilometers, after which it is recommended to change them.

Usually available in black

Differences between injectors for 8 and 16 valve engines

Various modifications of Priora are equipped with parts of the same model. There are no differences for 8 and 16 valve power units. The only thing is that you should be careful when selecting injectors for engines of different sizes: for example, for a 1.5 engine, spare parts will differ in markings, color and thickness from those for a 1.6.

It is recommended to choose materials from the same manufacturer that were equipped with the car at the factory.

5.18.11. Checking and replacing injectors

Signs of injector malfunction may include: – difficult engine starting; – unstable engine operation; – the engine stalls at idle; – reduced crankshaft rotation speed at idle; – the engine does not develop full power, insufficient engine response; – failures in engine operation when the vehicle is moving; – increased fuel consumption; – increased content of CH in the exhaust gases. You will need: a 5-point hex key, a flat-blade screwdriver, a 17-point key (two), an autotester.

3. In turn, connect the four control contacts to the common contact and measure the resistance in each case. It should be 11–15 ohms. If in one or more measurements the resistance value differs from the specified value, the tested injectors or their wiring harness may be faulty.

4. For a more accurate check and replacement of injectors, remove the fuel rail from the car (see “Removing and installing the fuel rail”).

11. ...and similarly remove the ring from the sprayer side. 12. If you are installing old injectors, carefully wash their nozzles with solvent or carburetor cleaner.

15. Having installed the fuel rail, connected the fuel line and connected the wiring harness block, secure the minus terminal on the battery, turn the ignition key 3-4 times to position “I” (ignition) at intervals of 2-3 s between turns on and check for leaks pipe connections and injector seals. 16. Install all removed parts in the reverse order of removal.

Causes of injector contamination

When a mixture of air and fuel burns, a tar deposit is formed. It is deposited not only in the combustion chamber of the engine, but also on the surface of the nozzles. This leads to their gradual contamination. The shape and diameter of the hole in the nozzle body gradually decreases. The result is insufficient supply, a change in the spraying process. The mixture turns out to be heterogeneous. Instead of the injector delivering a mist of fuel into the engine, it sprays small streams of fuel.

The structure of the mixture changes, and an excessive amount of air or fuel appears in it. Engine performance decreases, the on-board computer tries to adapt the car to new conditions, supplying even more gasoline, which cannot burn completely.

Gasoline injectors work even worse in winter, when fuel evaporates more slowly. This leads to more intense pollution.

Symptoms of clogged injectors

Loss of dynamics is one of the main signs of clogged injectors. If they are contaminated, the car simply will not accelerate properly.

• Unstable idling, the engine at idle will operate unstably and intermittently.

• Starting difficulties can occur when there is contamination or when the injectors stop holding pressure. Fuel begins to drip into the cylinder, which can cause popping sounds in the exhaust pipe.

• Ringing fingers are inevitable when the spray nozzle is clogged; this is due to the fact that the fuel entering the cylinder is mixed with air and the concentration of fuel in this mixture is quite small, so the engine experiences detonation.

Driving with dirty injectors will not provide any driving pleasure. And driving with such a problem is highly not recommended.

Cleaning Priora injectors

There are two options for washing injectors: with and without removing them from the car. The removed injectors are washed on special stands using ultrasound, under the influence of which even the oldest contaminants disappear. Ordinary drivers do not have such stands, so below we will consider a more popular option for washing injectors without removing them from the Priora. Here's what you'll need for this:

• liter of special flushing fluid;
• two automobile nipples;
• automobile fuel filter;
• a pair of metal clamps;
• a meter piece of rubber hose with a diameter of 12 mm;
• drill with 13 mm drill bit;
• electric pump;
• two liter plastic bottle.

Flushing sequence

1. The bottom and cap are drilled into the plastic bottle. This is done with a “13” drill. Automotive nipples are inserted into the holes.
2. The spool is unscrewed from the nipple inserted into the plug. This must be done so that the flushing liquid passes freely into the nozzles.
3. Now a rubber hose is put on the nipple inserted into the plug and secured with a metal clamp. The second end of the hose is put on the fuel filter and secured with a second clamp. A piece of rope is screwed to the bottle with tape (so that the bottle can be hung on the hood).
4. The car starts. You must wait until the engine warms up to 90 degrees. After warming up the car turns off. The fuel hoses are removed from the fuel pump, the car starts again and runs until it stalls. All this is done in order to completely relieve pressure in the fuel line.
5. Now you need to find the fuel hose with a green button on the clamp, connected to the fuel line. To remove it, just press the green button and pull it towards you.
6. The hose is put on the fuel filter (the clamp with the green button should make a characteristic click).
7. The washing liquid is poured into a plastic bottle.
8. An electric pump hose is connected to a nipple inserted into the bottom of the bottle, after which the bottle is suspended on the open hood of the car.
9. Using a pump, a pressure of 3 atmospheres is created in the bottle (as the liquid flows out of the bottle, the pump will have to be turned on several more times to maintain this pressure).
10. After the required pressure has been created in the bottle, the car starts at idle and runs for 15 minutes.
11. After this time, the engine is turned off and cools down for 10 minutes.
12. If there is still liquid left in the bottle, the engine starts again and runs until it stalls.
13. After this, the flushing system is removed from the car, and the fuel hose is installed in its original place. Injector flushing is complete.

Injector works perfectly

Perfect combustion of fuel can only be achieved if the injector is fully operational. Translated from English, it is called a motor pump.

To understand how to properly clean, you need to know the operating principles of the mechanism itself. This part is based on one or two channels. The first will receive the sprayed liquid, the second will receive the same steam or gas, which will spray the first liquid. The torch will burn continuously and evenly if the nozzle is of high quality and clean. In gasoline engines like the Lada Priora, an electromagnetic injector is usually used. It is a simple device that operates using an electronic control unit - at the right time it is required to supply voltage to the valve excitation winding. Thus, an electromagnetic field will be created: it will retract the valve with the needle and release the nozzle. The fuel will inject, the voltage will disappear and the needle will return to the seat.

The best injectors for VAZ 2110-12

Injector malfunctions or how to check the injectors: 1. Coking of the outlet holes.

Symptom: increased gas consumption, poor engine starting, deterioration in vehicle dynamics. Otherwise, the engine behaves normally, idle speed is stable and starts normally at positive temperatures; at negative temperatures, starting is difficult.

2. Leaky closing of the nozzle valve.

• Symptom: increased fuel consumption, poor engine starting, tripping or detonation at idle.
• Diagnostics: measure CO (on a normally running engine without a catalyst, CO should not exceed 1% in idle mode. One leaking injector increases CO by approximately 1.0-1.5%).

3. Valve stuck.

• The sign is engine tripping.
• Diagnostics: disconnecting and then connecting the injector electrical connector with the engine running. If the injector is faulty, then there will be no engine response; if the injector is working, then there will be a temporary drop in speed.

4. Unstable valve hanging.

• Symptom: floating idle (a sharp drop in idle speed followed by an increase to 1000 - 1400 revolutions or a complete stop of the engine).
• Diagnostics: as in point No. 3. If one injector hangs unstable, it is guaranteed to be diagnosed as a shutdown. If two or more, then only by replacement.

Example, injectors with a mileage of 198 thousand km. At 40 thousand km, ultrasonic washing was done, and at 170 thousand km. Lavr decarbonizer was poured.

About VAZ injectors of the tenth family: “Dozens” were equipped with Bosch and Siemens injectors. Standard injectors from the factory are mainly Bosch injectors 0 280 158 996 (or 996e).

Interchangeability of VAZ injectors: Injectors come in not only different sizes, but also different in performance. To understand which injectors are suitable for your car, just use the table:

Addition to the table: BOSCH 0 280 150 996 nozzles are no longer produced; their analogue is BOSCH 0 280 158 110 (capacity 170 cc/min). There are some differences, for example, the rubber sealing ring on the 110th is a couple of millimeters higher than on the 996th, and the “tail” (from which it splashes) is longer. But there should not be any difficulties when installing the injectors.