More efficient injectors have been installed.

Reasons why the Priora 16 valve engine is tripping. Nothing new

Supply system;
Ignition;
Sensors

The most common cause of 16 valves on a Priora is damage to the injector winding. You can check this by removing the cover and manifold. Then measure the resistance on the injector winding; it should be within 15-15 Ohms. If it is faulty, it should be replaced. Read more about how to do this in the article “How to check an injector nozzle”;
Another reason is a clogged injector. This usually happens when using low-quality fuel. You can also “clog” these engine elements yourself by pouring various cleaners into the tank. They partially destroy sediments. Which, in the form of a suspension, enter the injector, where they get stuck in the nozzles. To fix the problem, you need to flush the injectors. You can do this yourself without removing them from the engine.

First, let's visually evaluate the candle. It should be brown-sand color. If it is darker, then it may be faulty. It is advisable to check it on a special stand. The spark should be blue and white. If it is yellow or red, then this is a bad sign. You can, of course, try to clean it with sandpaper, but this may not bring the desired effect;
Try using another spark plug and check how the engine runs. If everything returns to normal, then the cause has been found. Also check the high voltage wire;
After this, check the ignition coil. It is the weakest ignition part in the Priora. To check, we reset errors from the ECU. And with the ignition off, they swap the supposedly non-working ignition coil with the obviously working one. The engine starts for a couple of minutes. The diagnosis is repeated. If the flash miss “migrated” along with the coil, the problem is in it. Replace it with a new one.

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Siemens Deka injectors

Lada Priora Station wagon quartz from Morsha Logbook Replacing the heater fan on a Priora without air conditioning
There is no certainty with Siemens injectors, since the plant can install injectors of different markings on the same engine. However, there is a clear difference between the injectors for eight-valve and 16-valve engines.

In the first case, the nozzle

single-flare, in the second - double-flare, that is, it sprays fuel onto each of the intake valves separately.

They are marked as VAZ20734 (orange markings) and 20735 (blue markings). On eight-valve engines, a Siemens 6393 nozzle with a thick torch can be used. Its productivity is 1.662 mg/sec, and the operating pressure is 3 atm. Each of these injectors can be installed on a VAZ-2114 engine.

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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.

This is interesting: Replacing brake discs with your own hands

When to change: self-diagnosis

Lada Priora Sedan 16kl Kvartsukha Logbook REPLACING THE FUEL FILTER

The fuel system of an injection engine has a fairly extensive architecture and faults can only be identified after an accurate diagnosis of each of the system elements. For example, a drop in engine power may be the result of either a malfunction of the injectors, insufficient performance of the fuel pump or a clogged fuel filter.

In addition, jerks and dips, unstable idle and difficult starting, increased consumption, can occur when the injector is simply clogged.

You can check the injectors themselves directly on the engine without removing them. To do this, just start the engine and remove the wires from the connector one by one. If the stability of the engine changes in this case, the engine begins to trip, then the injector

in order. If, when removing the wires from the connector, the stability of the motor does not change, the injector needs to be cleaned or replaced.

How to remove injectors on a Priora with air conditioning

Removing and installing Lada Priora injectors

Signs of injector failure may include:
– difficult engine starting;
– unstable engine operation;
– the engine stalls at idle;
– reduced crankshaft speed of the VAZ 2171 at idle;
– the engine does not develop full power, insufficient engine response;
– failures in engine operation when driving;
– 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.

1. Disconnect the connecting block of the injector wiring harness and the engine harness by pressing the lock.

2. Carry out an initial check of the injector windings of the VAZ 2172. To do this, connect an ohmmeter to the contacts of the pads one by one.

The block has five contacts: four for supplying a control signal to the injectors and one common “+12 V” (a crimson wire with a black stripe is connected to it).

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 during one or more measurements the resistance value differs from the specified one, the Lada Priora injectors being tested or their wiring harness may be faulty.

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

5. Use a screwdriver to pry off the spring retainer of the injector...

Removing injectors on Priora (Lada 2170, VAZ 2112)

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Replacing injectors (full technology)

Lada Priora Station Wagon Logbook Towbar and roof rack

Before replacing injectors on a VAZ-2114 of any generation, it is necessary to relieve the pressure in the power system.

To do this, remove the rear seat cushion, open the hatch and remove the contact block from the fuel pump. Now it is de-energized and will not build up pressure.

We start the engine and wait a few minutes until all the fuel in the system is used up. As a matter of fact, I’m interested in which spark plugs are best for Lanos 1.5, I take spark plugs seriously. The car drives every day, 5 thousand a month, so I want it to always start with a half turn and. The pressure has been relieved, now you can safely remove the old injectors and replace them with new ones. We proceed according to the following algorithm:

We de-energize the car by removing the negative terminal from the battery.

Disconnect the negative terminal from the battery

Remove the hose from the pressure regulator

Disconnect the electrical connector of the throttle position sensor

Disconnect the connector from the idle air regulator

Disconnect the connector block from the injector wires

Unscrew the fuel rail mounting bolts

We dismantle the fuel rail with injectors

Squeeze the spring clip and disconnect the electrical connector of the injector.

Rock the injector and remove it from the fuel rail.

Installation of injectors is carried out in the reverse order. Before installation, it is advisable to check the integrity of the O-rings; if they have lost their elasticity, it is better to replace them with new ones. The injectors are installed and ready for further use. Good luck to everyone!

Removal and installation of injectors Lada Priora, VAZ 2170, VAZ 2171, VAZ 2172

Signs of injector failure may include:

– difficult engine starting; – unstable engine operation; – the engine stalls at idle; – reduced crankshaft speed of the VAZ 2171 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.

1. Disconnect the connecting block of the injector wiring harness and the engine harness by pressing the lock.

2. Carry out an initial check of the injector windings of the VAZ 2172. To do this, connect an ohmmeter to the contacts of the pads one by one.

The block has five contacts: four for supplying a control signal to the injectors and one common “+12 V” (a crimson wire with a black stripe is connected to it).

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

5. Use a screwdriver to pry off the spring retainer of the injector...

6. ...remove the clamp...

7. . and remove the injector from the fuel rail. Remove the remaining injectors in the same way.

8. To identify a faulty injector, connect an ohmmeter to the contacts of the Lada Priora injectors. It should show a resistance of 11-15 ohms. If the winding resistance is not normal, replace the faulty injector, as it cannot be repaired.

Note Check the injector for the shape of the sprayed fuel spray and for leaks at specialized service stations, since such a check directly on the car is very fire hazardous.

The injectors of the VAZ-21126-00 engine of the VAZ 2170 Lada Priora car have an original design and are not interchangeable with the injectors of VAZ priora injection engines of other models. Buy new injectors with exactly the same markings.

9. Whenever removing injectors, be sure to replace the O-rings on all injectors on the ramp side. Using a screwdriver, carefully pry the edge of the ring...

10. ...remove the sealing ring from the Lada Priora injector...

11. ...and similarly remove the ring from the sprayer side.

12. If you are installing the previous Priora injectors, carefully wash their nozzles with solvent or Lada Priora carburetor cleaner. Warning

Install new O-rings carefully, without using any tools, after lubricating them with engine oil.

The sealing rings on the injectors are identical to other rings installed on early VAZ models with fuel injection systems and are interchangeable with them.

13. Before installing the injectors, lubricate the O-rings with engine oil or WD-40.

14. Install the injectors in the reverse order of removal, securing them to the ramp with clamps, after tightening them a little.

15. Having installed the Priora 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 tightness of the pipeline connection and priora injector seals.

16. Install all removed parts of the VAZ 2170 in the reverse order of removal.

Auto diagnostics - Prices for work

Replacing the heater motor for VAZ 2110, 2111, 2112 1500 rubles

Replacement of engine compartment wiring harnesses for VAZ 2108, 2109 (without injection wiring) 2000 rubles

Replacement of torpedo electrical wiring together with the mounting block on a VAZ Kalina 5,000 rubles

Replacement of idle speed control VAZ, GAZ 300 rubles

Replacing the heater rheostat VAZ 2109, 21015

300 rubles

Replacing the rheostat of the VAZ 2110 heater 1000 rubles

Replacement of spark plugs (four) 200 rubles

Replacement of fuel injectors on a 4-cylinder engine 1500 rubles

Replacement of electric fuel pump on VAZ cars 1000 rubles

Replacement of electric radiator cooling fan VAZ, GAZ 800 rubles

Replacement and repair of electric windshield wipers on VAZ 2110, 2111, 2112 1500 rubles

Replacement and repair of electric windshield wipers on VAZ 2109, 2108, 2114, 2115

1000 rubles

Replacement of temperature sensor VAZ, GAZ 300 rubles

Computer diagnostics of Cevrolet, Daewoo 800 rubles

Computer diagnostics GAZ 600 rubles

Computer diagnostics of Peugeot electronic systems 900 rubles

Reprogramming (chip tuning) of the control unit “Mikas 11 ET” for GAZ cars, Euro-3 system 2500 rubles

Repair of the electrical heating system, replacement of stepper motor gearboxes on VAZ 2110, 2111, 2112 1500 rubles

Repair, setup, adjustment of mechanical injection systems (injectors K, KE-jetronik) 5000 rubles

Removing the fuel rail for repair or replacement of injectors on VAZ cars with 16-valve engines 2000 rubles

Removal and installation of fuel rail injectors, for replacement or repair of injectors on VAZ cars with 8-valve engines (except classics) 1200 rubles

Removing/installing the battery 200 rubles

Removal/installation of mounting block VAZ 2109, 21015 500 rubles

Installation of radio tape recorder 600 rubles

Installation of the activator in one door VAZ 2109, 2110 1000 rubles

Installation of two electric windows together with electrical wiring and buttons 3000 rubles

Installation of rear speakers, with wiring (including cutting out holes for speakers in the shelf) 1,500 rubles

Installation of immobilizers (immobilizer together with installation) 4000 rubles

Installation of parking sensors 4000 rubles

Installation of alarms without auto start and pager (the price includes the alarm and its installation) 5,000 rubles

Installation of alarms with auto start and pager (price includes alarm and installation)

7000 rubles

Chip tuning Renault 4000 rubles

Chip tuning of “Classic” cars (rear-wheel drive) with control units M 73 2500 rubles

Chip tuning of “Classic” cars (rear wheel drive) and Bosch 7.9.7+ unit 2500 rubles

Chip tuning of VAZ Lada “Samara” 1.6 and 1.5 cars with Bosch control unit 7.9.7+ 2500 rubles

Chip tuning of VAZ cars with control unit “January” 5.1, 5.1.1 and VS 2000 rubles

Chip tuning of GAZ cars Euro-3 system 16-valve ZMZ engine, with Mikas 11 ET control unit (electronic throttle)

2500 rubles

Chip tuning of Lada Kalina cars with Bosch 7.9.7+ control unit (16 and 8 valve engines 1.4 and 1.6) 2500 rubles

Chip tuning of Lada "Kalina" cars with control unit M 73 (16 and 8 valve engines) 2500 rubles

Chip tuning of Lada Priora cars with M73 control unit 2500 rubles

Chip tuning of Lada Priora cars with Bosch control unit 7.9.7+ 2500 rubles

Chip tuning of Lada Priora 1.8 cars 2500 rubles

Chip tuning of M 73 blocks 2500 rubles

Chip tuning of injection VAZ cars with control unit “January” 7.2 2000 rubles

Troubleshooting injector problems

First you should try to wash the Priora injectors. There are three methods for this procedure:

Flushing during operation.
Hardware flushing method, without removing it from the Priora engine.
Ultrasonic cleaning in a special machine.

The most affordable and easiest way is to clean the Priora injectors yourself. This is done by pouring a special liquid into the tank. They are available for sale in a sufficient variety. The most popular of them are the following drugs:

German "Liqui Molly".
US "High Gear"
Russian "Laurel".

To rinse, it is enough to pour liquid into the tank at the time of refueling, according to the instructions on the bottle. And drive quietly until all the fuel is used up. After this, replace the spark plugs.

Important! This operation is more likely not a repair, but a preventative measure for the Priora. It is advisable to carry it out every 30,000 kilometers.

Then it will be effective.

The other two methods require special equipment and can only be carried out in a service station. Washing the injectors, without removing them from the Priora, is carried out by connecting a special container to the engine fuel frame. The electric fuel pump turns off. The fuel line fitting is disconnected from the frame and the flushing tank is connected. It contains a mixture of gasoline and washing liquid under pressure. The Priora engine starts and runs until the mixture is completely exhausted. After which, the Priora spark plugs are also replaced.

Cleaning injectors using ultrasound

To do this, you will have to remove the injectors from the Priora engine. The operation is performed on a special stand or in an ultrasonic bath. Such equipment costs quite a lot, and not every car service center can afford it. Moreover, it is a risky operation. Sometimes, instead of putting the injectors in order, ultrasonic treatment, on the contrary, completely disables the components

Therefore, you need to treat this process with great caution

But in any case, the injectors, as when replacing, will have to be dismantled. How to do it?

Removing injectors for cleaning or replacement

This is a serious process that requires attention and patience. To bring it to life you will need:

Screwdrivers.
Pliers.
Head keys for 13 and 10.
5mm hex key.
2 wrenches for 17.
Mount.

First of all, of course, the Priora battery is turned off. After this, the connectors are removed from the ignition coils. Using a 10mm wrench, unscrew the fastening bolts and remove the coils. Using a 13mm socket, unscrew the 5 bolts and nuts that secure the intake receiver to the head. Using keys 17, disconnect the fuel line from the pipe going to the injector frame. Using a screwdriver, unscrew the fastener of this pipe to the block head. Unscrew the fasteners and remove the dipstick tube. After removing the clamp, move the rubber pipe from the crankcase to the head. Unscrew and remove the 10mm nuts holding the incoming air air receiver on top. Remove the air filter housing. Using a hexagon, unscrew the two bolts securing the fuel frame. Pull the receiver toward you (towards the radiator) by 3-5 centimeters without removing it completely. Disconnect the injector harness connector. Using a pry bar, carefully pry it up and pull it out of the nozzle holes.

Important! Ensure that the injector sealing rings are intact. Try not to drop it. After this it becomes possible to pull the fuel frame towards the battery

Transfer it to the table and start removing the nozzles. This is no longer difficult. Disconnect the wiring harness from each, remove the fixing bracket from the frame and remove the “injector” from the socket. All. You can install a new one or give the old one for washing. And put everything back together in reverse order. Start and check the effectiveness of replacement or flushing

After this, it becomes possible to pull the fuel frame towards the battery. Transfer it to the table and start removing the nozzles. This is no longer difficult. Disconnect the wiring harness from each, remove the fixing bracket from the frame and remove the “injector” from the socket. All. You can install a new one or give the old one for washing. And put everything back together in reverse order. Start and check the effectiveness of replacement or flushing.

There is a useful video for viewing on the topic, removing injectors on a Priora:

How to change the fuel filter on a Priora
How to change the cabin filter of Lada-Vesta
How to change spark plugs on a Priora
How to revive car wipers

When to change self-diagnosis

In addition, jerks and dips, unstable idle and difficult starting, increased consumption, can occur when the injector is simply clogged.

in order. If, when removing the wires from the connector, the stability of the motor does not change, the injector needs to be cleaned or replaced.

Cleaning procedure

Cleaning injectors can provide the car owner with the following benefits:

restoring the original functionality of the device;

reduction of fuel consumption;

optimization of motor operation.

That is, in case of contamination (use of low-quality fuel), it is possible to flush and clean the valves in order to restore them to functionality.

Open the hood and make sure all vehicle systems are working properly

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.

Unclip the plastic clips that secure the valve's power cable. Remove the connector.

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.

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.

Communication, commercial requests Help channel: PrivatBank 5168 7556 3188 1725, WMZ.

How to check an injector nozzle for serviceability

Problems with injectors occur both on cars powered by diesel fuel and on gasoline-injected cars. An injector is a part responsible for injecting fuel under a certain pressure. It is useful to know how to check the injector nozzle if starting difficulties occur.

Causes and symptoms

Accurate metering of fuel, tightness of hoses and seals, activation of the injector at the right moment are prerequisites for stable and trouble-free operation of the engine. If the injection part leaks, as they say, then the efficiency of fuel atomization deteriorates, i.e., the shape of the flame is upset and the power unit smokes, either black or gray, it is difficult to start, consumption increases, and power is lost.

“The injector is leaking” is an expression that means fuel is leaking at a time when it is not needed.

There are many culprits for poor performance. For example, a dirty filter, a non-working fuel pump or bad spark plugs. The same thing happens due to the fault of a failed reel or due to problems with the timing belt.

The most important symptom of a non-working injector is difficulty starting the internal combustion engine. This is especially true for a “cold” engine. In addition, as mentioned above, symptoms include increased fuel consumption and unstable engine operation in idle mode. The last symptom generally resembles almost a tripping of the engine, as if one of the cylinders is not working.

As for the driving signs of a non-working injector.

Defects in injection elements should be corrected immediately, otherwise it will negatively affect the service life of the engine and gearbox. Experts also do not recommend driving with a faulty injector, because it is simply dangerous. On steep climbs, when maneuvering and overtaking, a car with a failed injector can play a cruel joke on the driver.

How is diagnostics carried out?

You should know that car injectors are classified into several types. Today, two of them are in use: conventional and electric injection elements (magnetic).

Electric or, more correctly, electromagnetic injectors (EMF) are equipped with a special valve that supplies fuel. It, the valve, is controlled by the power unit ECU using sent pulses.

As for mechanical injectors, they open as the gasoline pressure in the injector increases, i.e., automatically.

On modern cars, the first variants of injectors are often installed - EMF.

Checking the injector itself without removing it

Injector testing can be done in several ways. However, in use

the simplest of them, and this is not surprising. It makes it possible to quickly test the injectors without even removing them from the car. The fundamental factor in such diagnostics is the analysis of the noise emitted by the motor during operation.

If a muffled high-frequency noise is heard from under the hood, this indicates the importance of cleaning the injectors or a problem with one of them.

Checking power supply

It is recommended to check how the power is going. This test option is carried out only when the injectors themselves are functioning flawlessly, but difficulties are observed with starting.

Here's how this kind of diagnosis is carried out:

According to the result, the following conclusions are drawn:

Another test option involves using an ohmmeter. This method allows you to measure the resistance on the injectors, and draw conclusions accordingly.

This is done as follows.

In this way, you can measure the compliance of the resistance indicator with the required one. If deviations from the norms are noticeable, the faulty injector is removed from the vehicle and replaced with a known good one. After this, you can check the resistance again, and be sure to evaluate the operation of the motor. If everything was done correctly, the engine characteristics should change.

Analysis of the operation of injectors on the ramp

This method already involves dismantling the fuel rail. The injectors, of course, are removed along with the ramp. Then reconnect all electrical contacts to the ramp (after all, they are thrown off during dismantling). The negative terminal of the battery, which was removed earlier, also returns to its place.

Anyone can check the injector nozzle with their own hands. It is not necessary to go straight to a car service center if you encounter another problem. An experienced motorist should be able to do some repairs himself.

If you find an error, please select a piece of text and press Ctrl+Enter.

Source

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, 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.

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

Injector malfunctions

Among the most common causes of injector failure may be the following:

The injector nozzle is coked - in this case, increased fuel consumption may be observed, vehicle dynamics will decrease, and engine starting will be difficult at subzero ambient temperatures. Otherwise there are no differences.
The injector valve does not close hermetically (“the injector is snotty” - note) - here there may be increased fuel consumption, “tripleting” and increased detonation (about checking the knock sensor here), unstable idling.
Valve sticking - engine troubles. Replacing the timing belt on a Priora 16-valve engine is a little more complicated than on 8-valve engines, however, this procedure is necessary. In order to diagnose it, with the engine running, turn off the power supply to each injector in turn. How to change bearings on a generator in a VAZ 2110, replacing its bearings will be for you. With a non-working injector, no changes in engine operation will be observed, but with a working injector, the speed will drop.

If you find a non-working injector on your car, or they need cleaning, you need to know how to properly dismantle them. Replacing valves on a VAZ-2112 with 16 valves with your own. You could already read more about this above.

A problem arose - the injector nozzle was coked - we repaired it ourselves, thank you very much to the author of the article. When replacing, we found the same ones, plus we bought several o-rings at the car market, they cost pennies. The repair was very inexpensive!

I couldn’t understand what it was? I filled the tank, but it was eating like crazy. I dug around and couldn’t figure it out until I was advised to look for information on the internet. It’s good that smart people write and show how to understand and deal with the problem. I looked, listened and I figured it out myself - the injectors were snotty, changed it and that’s it... the problem disappeared. I didn’t have to spend any money!

Before going to the service station I read your article, now I’ll try to disassemble and wash it myself. It turned out to be easier than I expected. Timing belt Correct belt replacement. VAZ 2110 and 2111. -. Replacing the cylinder head gasket on a VAZ 2110 (8 and 16 valves. Thanks to the author.

Diagnostics of spark plugs by plaque

When the engine starts cold or hot, you can check the carbon deposits on the spark plugs. If the coating is white, then this indicates a lean mixture and overheating of the engine. A black tint indicates a rich mixture. In both the first and second cases there are problems with the operation of the electronics. This is either installing new firmware, or replacing the ECU. A normal candle has a brick color. By the way, the engine may stall at idle if the part is damp. This also significantly increases the warm-up time. In addition to the spark plugs, the ignition coil may also be acting up. Priora (8 valves) is equipped with distributor ignition. Overheating of the coil is often observed. You can restore the operation of the motor by simply replacing the element.

BOSCH injectors

Their use depends on the engine size and the number of valves. There is no particular variety in VAZ-2114 engines, so there are only the following options:

Nozzle BOSCH 0280 158 022 The nozzle is marked black, has a productivity of 1.9644 mg/sec, operates under a standard pressure of 3.8 atmospheres. Installed on a 1600 cc engine with 16 valves. Works with January 7.2 controller.

BOSCH nozzle: productivity 1.9644 mg/sec

BOSCH nozzle: productivity 1.922 mg/sec

New injector

may have a thicker O-ring and, accordingly, a longer nozzle. The injectors are completely interchangeable. These injectors can only work with the January 5.1 controller.

In addition, you need to know which engine control controller is installed on the car, since January 5.1 and January 7.2 may require injectors of different capacities.

About the design of Priora injectors

It was these components that gave the common name to the type of car with an ECM. None of the drivers wants to pronounce the full name. They say simply - an injector. So what is a nozzle (injector)? This is a device that allows you to inject fuel, under pressure, directly into the working chamber of the cylinder in strictly metered portions.

The principle of operation of Priora injectors is based on the electromagnetic effect. When the circuit is closed, the coil retracts the core, which opens the channel for supplying fuel accumulated in the fuel frame under pressure. The opening signal comes from the electronic control unit (ECU). The nozzle consists of the following parts:

Frame.
Coil.
Fuel cleaning mesh.
Nozzle with holes (diffuser).

Main problems of injectors

Malfunctions of these important components of the Lada Priora car can be divided into two categories:

Electrical part.
Mechanical component.

The first option includes damage to the coil or connector. A break or interturn short circuit may occur in the coil. One or both contacts in the connector may break. Over time or from an impact they break off. In any case, such a nozzle requires replacement.

Mechanical malfunctions of Priora injectors include various changes in the diameter of the fuel supply channel. Most often with Priora, this is contamination caused by the settling of foreign particles on the walls of the channel and in the diffuser. Or corrosion (increase) in diameter under the influence of additives. Although this happens extremely rarely at Priora. With an increase, there are no options other than replacement. But if they become dirty, you can wash the nozzles. About replacement and flushing, about identifying a breakdown, further.

Important! Contamination of the contact area of the shutter needle can also cause incomplete closure and fuel leakage.

Symptoms of malfunction and diagnosis of injectors

"Priora" begins to "triple". The engine shakes at idle. When driving, loss of power and failure to gain speed. The “Check Anger” lamp gives a signal. This means that one of the cylinders is not working as expected. First of all, you need to do computer diagnostics and count the errors. The ECU detects faults in the electrical part immediately. Otherwise, it gives at least an accurate orientation to the inoperative cylinder. And then all that remains is to determine what failed:

Candle with coil.
Compression in the cylinder.
Nozzle.

Knowing which of the “boilers” is not working makes it easier to act. The first thing to do is measure the compression. On a cold engine. If it is within the normal range, move on to candles. First, swap the coils on the Priora engine. If the leaks are again in the same cylinder, swap the spark plugs. Here you go. Nothing has changed. So this is an injector.

Attention! The nature of the malfunction can be indicated by the spark plug! If it is clean, then fuel is not flowing. But blackening and deposits on the electrodes indicate that the nozzle “does not hold” fuel and “floods” the spark plug.

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:

Flushing sequence

Ordinary car nipples are inserted into the holes of a plastic bottle

Priora injectors are washed using a filter and a plastic bottle

The green button is clearly visible on the Priora fuel hose

The main fuel hose of the Priora is connected to the fuel filter for flushing

The device for washing Priora injectors is assembled and ready for use

A car water pump plays an important role in the operation of a car engine. It is possible to recognize its malfunctions using the following article: https://vazweb.ru/desyatka/pitanie/zamena-forsunok-vaz-2114.html

Supply system

If the Priora engine (16 valves) is tripping, the reasons may be trivial. When there is no flash in the cylinder, perhaps there is simply no fuel there. If it has a normal compression ratio, it is worth diagnosing the power system. You should pay maximum attention to the air filter and the pipe. It is necessary to make sure that the clamps are securely tightened, whether the purifier body itself is intact, and whether there is any air leakage from the outside

Also pay attention to the tubes. They must be tightly secured to the throttle assembly

Fuel leaks, cracks, and broken plastic may indicate that some parts are faulty.

How to recognize faulty fuel injectors? How to check injectors?

Before you learn how you can test your fuel injectors, a few words about what a fuel injector is. The fuel injector replaced the carburetor, which mixed fuel with air, forming an air-fuel mixture (FA), for subsequent supply to the combustion chambers of the car engine.

By the way, carburetors still exist, mainly on classic cars, as well as special vehicles. On all modern cars it was replaced by injectors starting in 1990. With the advent of injectors, the fuel injection system began to work under the control of the engine ECU (electronic control unit).

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 open-end wrenches;

Phillips-blade screwdriver.

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

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.

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 car and remove the seat from the back row.

There is a carpet under the seat, and under it there is a hatch to the gas tank.

Using a Phillips screwdriver, unscrew the two screws that secure the hatch cover to the panel and remove the cover.

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.

After this, you need to start the car and wait until the engine stalls due to lack of gasoline.

Next, you need to run the starter for at least three seconds so that the pressure in the system equalizes.

Disconnect the cable from the negative terminal on the battery.

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.

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.

The wire connected to the throttle valve is disconnected from the intake manifold.

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.

Using a screwdriver, loosen the clamps on the ventilation and vacuum hoses and disconnect the hoses from the cylinder block.

The intake manifold is bolted to the cylinder head with three nuts - you will need to unscrew them to remove the intake manifold.

After which it will be possible to disconnect the injector harness.

The fitting through which fuel is supplied is disconnected from the engine compartment.

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.

The injectors can be pryed off with a screwdriver - the fixing element is easily removed so that you can get to the valve itself.