Lada Priora Station Wagon BLACKandWHITE Logbook Replacing injectors

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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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.

Several cleaning methods

Experienced drivers know that there are several ways to clean injectors on a Lada Priora. Moreover, each of them has both its pros and cons.

The first option is to use a detergent additive - the liquid is added to gasoline and, after entering the gas tank, it enters the injectors. Usually one bottle of the additive (0.5 l) is enough for a whole tank of fuel. In this case, absolutely all parts of the fuel system are washed. However, the disadvantage of this method is the lack of drainage of dirt - it will remain in the system.

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:

1. 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!

Also check out

1. For convenient removal of the cabin filter of the Lada Priora, a special tongue is made. It will most likely not be possible to do this carefully, but there is nothing wrong with a damaged filter, since it is no longer suitable for further use anyway.

1. As you can see in the photo, the old filter is covered in dust.
2. The new filter is installed easily using special arrows indicating the direction of installation.

1. Lower the rolled filter between the motor and the socket and install it. How to install the filter by bending it along the notches is shown in the photo.

1. After we have replaced the cabin filter of the Lada Priora, we need to close the cover by placing the lower shank in the slot. Press the top until it clicks. The foam seal should be on the outside.
2. Finally, we fasten the engine compartment trim, after which you can return the vacuum booster hose to its place.

This completes the replacement of the Lada Priora cabin filter.

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:

1. Flushing during operation.
2. Hardware flushing method, without removing it from the Priora engine.
3. 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

Checking injectors at home with an ear and a screwdriver!

If, when listening to the fuel injector, you hear a continuous series of clicks that are uniform and not very loud, then you can assume that the injector is working properly and is working as it should.

If the clicks are intermittent, irregular and with pauses, most likely the injector is stuck or jammed and requires flushing or even replacement. At a minimum, such an injector should be removed for further diagnostics.

We carry out the described procedure for each injector, after which we decide whether there is any point in visiting a service station or not. This method does not provide 100% confidence, but a preliminary conclusion can be made. Moreover, it is free and available to everyone. If there are errors indicating problems with the injectors, then this method will, at a minimum, help verify that there really is a problem.

After such a diagnosis, you can try to restore the operation of the injector using flushing fluid, or you can stop by the station and carry out a full cleaning of the injectors on an ultrasonic stand.

Source

When to change self-diagnosis

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.

Important nuances

There are a few things to keep in mind when cleaning your injectors. Here they are:

You cannot save on flushing fluid. The injector is a very important part of the engine. And it is extremely sensitive to the quality of the flushing fluid. The optimal choice for washing Priora injectors is a product from Wynns, developed specifically for injection engines. The cost of a liter bottle is 700 rubles;

The plastic bottle must be removed carefully after washing the Priora injectors.

Replacing injectors is a long procedure. Nevertheless, it is quite within the power of a novice driver if he has at least a vague understanding of the structure of an injection engine. When cleaning the injectors, the situation is much simpler: you just need to be able to use a drill and know where the main fuel hose is located.

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.

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

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.

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.

Prevention is better and cheaper than treatment!

It should be noted that, as with most technical issues. vehicle maintenance, prevention is always better and cheaper than treatment (repair). One of the simplest, cheapest and most effective ways to prevent fuel injection problems is to maintain a healthy ignition system. One of the most important conditions for the “health” of injectors is cleanliness! It is important to refuel with high-quality fuel and change filters on time. Also, to prevent contamination of injectors, as well as combat deposits, experts recommend using a special liquid to clean fuel injectors. In addition, there is a “flush” that allows you not only to prevent the accumulation of dirt and deposits, but also to completely clean the fuel injector system.

If your problem is more serious, then you will most likely need to consider having your fuel injectors professionally cleaned. Of course, this will cost much more than flushing liquid, but the result will be much better. And besides, it is much cheaper than replacing injectors or repairing the engine.

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:

1. 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:

1. Electrical part.
2. 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:

1. Candle with coil.
2. Compression in the cylinder.
3. 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.

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.

You need to watch how the torch changes: it will expand or contract - it all depends on how dirty everything is. Once the jet stops changing, cleaning should also be completed.

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.

Carburetor cars are slowly but surely becoming a thing of history. Float chambers and diffusers have been replaced by injectors and distributed fuel injection, the quality of which is controlled by the car’s on-board computer. On the one hand, injectors have made life much easier for motorists. On the other hand, even these reliable devices periodically fail. Fortunately, the driver can replace them with his own hands. The main thing is to know how it's done.

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.

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.

5.18.11 Removal and installation of the fuel rail / VAZ 2170

The fuel rail is removed to replace injectors and repair the cylinder head, as well as when replacing the rail itself. You will need: a 5mm hex wrench, a flat blade screwdriver, a 17mm wrench (two). 1. Reduce the pressure in the fuel system (see “Reducing fuel pressure in the engine power system”). 2. Remove the wire from the negative terminal of the battery. 3. Remove the decorative engine casing (see “Removing and installing the decorative engine casing”). 4. Remove the air filter (see “Removing and installing the air filter”). 5. Remove the throttle assembly from the intake manifold (see “Removing and installing the throttle assembly”).

6. Remove the intake manifold (see “Replacing the cylinder head cover gasket”).

9. Perform an initial check of the injector windings. To do this, connect an ohmmeter one by one to the contacts in the injector connectors and in each case measure the resistance of their windings. It should be 11–15 ohms. If, when measuring an injector, the resistance value differs from the specified value, then this injector is faulty and must be replaced (see “Checking and replacing injectors”).

14. ...and remove the ramp along with the injectors.
Note Please note: the connection between the tube and the ramp is sealed with a rubber ring. Be sure to replace a heavily compressed, hardened or torn ring.

15. Install and secure the fuel rail in the reverse order of removal, lubricating the injector O-rings with engine oil or WD-40.

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

removing the VAZ 16 valve ramp without removing the manifold

Removal of injectors from the ramp and assembly

removing injectors on Priora (Lada 2170, VAZ 2112)

Priora se removal of receiver and injectors with fuel rail 16 v

How to remove the fuel rail from a Priora in 5 minutes.