Replacing injectors on a VAZ 2109 injector 8 valves with your own hands

Replacing fuel injectors on VAZ 2108, VAZ 2109, VAZ 21099

Welcome! Are you looking for instructions for replacing engine injectors on fuel-injected cars of the Samara family?
If yes! Then, in this case, today we will familiarize ourselves with detailed instructions for replacing injectors. For clarity, the progress of replacing the injectors will be supported by photographs, and at the end of the article you will find a short video clip that talks about how quickly you can remove the injectors from the car. Summary:

Where are the injectors? The injectors themselves are located on the fuel rail in number of four, that is, one injector sprays fuel strictly onto one cylinder. Below is a photo of the same fuel rail and the injectors that are located on it. The injectors are indicated by red arrows.

When do you need to change injectors? They must be replaced if:

• Your car's engine starts to run worse.
• And also if, when the engine is running, the fuel consumption of your car has increased.
• Even if the injectors malfunction, the engine usually begins to have difficulty starting.
• After starting, the engine may also remain unstable at idle speed.
• It is also possible that your car’s engine will start idling at higher speeds.
• And finally, if the injectors are faulty, the content of toxic substances in the exhaust gases increases.

Note! But it is not always necessary to replace fuel injectors with new ones; sometimes simple cleaning helps to restore their operation! (For how to clean injectors from dirt, see the article: “Cleaning injectors”)

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Comments 18

What kind of brain do you have?)

And on 8k there was a BOSCH one, it seems, with a chip that had to be soldered and programmed for firmware)

Guys, tell me who changed the force to BOSCH 0 280 158 110? Is it necessary to flash it? VAZ 2109i 2001

If you change the forces and their performance differs from the parameters specified in the firmware, then inevitably you need to adjust the firmware, which is complete crap, because A lot of sections vary depending on the “firmware performance” section and parameters. Many sellers simply understand the word “VAZ injector” and that’s it. That’s why they shove it at people who don’t understand and install it. For example, there were Siemens deck 6238 - 4 pcs. with a performance of 1.6537 and one piss began to leak, or worse, flow through the housing or the winding resistance was zero, which is not uncommon. So, a man goes to the store and buys a VAZ injector, and the seller pushes him, for example, Avtelov’s 6393! They look completely identical, only the color is different, but the performance is different! The poor fellow sticks her into the ramp and gets sausage. Then he starts to get his mind blown in the store that the force is dead, and they tell him that we don’t sell dead meat, only fresh stuff. In this performance category, Siemens deck 6238 and Bosch 0280150996 green are identical. But the Boshevsky ones are structurally different and fit a different ramp. Something like this. It’s the same with DMRV 037 and 116. The firmware for them has different calibrations, which need to be changed to the type of DMRV and registered in the firmware. Install spark plugs with resistance that is not suitable for short circuit? And what ? Can you tell me for a moment that it runs and starts? Yes, I agree that perhaps they have less resistance and therefore a stronger spark, but then the question is, how long will the coil last or what is worse than the coil? Even, I didn’t sign for jokes))))) Here is a table of interchangeability of VAZ engines, where the asterisks indicate identity in performance, but this does not mean that they are structurally identical. The plant always swims against the current ((((

Siemens 63 93 forces are the same. four-stage

Is there a sequence for installing injectors? Mine have some letters AG BD, and each has its own letters.

As far as I know they should all be the same and there is no difference.

Is the injector working? I got into mine here. Dropped and broke one. I bought one just like yours. One. There are no relatives anymore.

How to replace injectors on a VAZ 2108-VAZ 21099?

Note! All four injectors are removed and installed identically, so for clarity, we will show the removal of only one injector!

1) At the very beginning of the operation, remove the fuel rail from your vehicle. (How to remove the rail, see the article: “Replacing the fuel rail”)

2) When the ramp is removed, place it on a flat surface and then disconnect the wire block from the injector you need.

Note! In order to disconnect the wiring block, squeeze the spring clip that secures it and only then disconnect it!

3) Now, using a screwdriver, move the metal clamp that secures the fuel injector in the direction of the ramp.

Note! There is no need to completely remove the clamp from the ramp, just moving it to the side is enough!

4) Next, grab the nozzle with your hand and shake it, as a result of which you remove it from the ramp.

5) Next, check the condition of the sealing ring of the injector body and the sealing ring of the spray part of the fuel injector, for this:

• Taking a screwdriver in your hands, use it to pry off both o-rings and check their condition.

Note! If the rings are in good condition, then in this case they can not be thrown away, but left as a spare and later used on a new injector. Before installing old rings, be sure to lubricate them with engine oil!

Installation: Installation of new injectors occurs in the reverse order, that is:

1) First, check the condition of the injector O-rings.

Note! The condition of the rings is checked only if you are going to install a used injector on your car!

2) Next, the fuel injector is inserted into the hole in the ramp, and after installation it is fixed with a clamp.

3) And finally, a block of wires is connected to the fuel injector, and after connection, the fuel rail is installed in its place.

Additional video materials: Just below you will find a video in which the replacement of fuel injectors will be carried out in detail. And the most important thing is that the replacement will be carried out quickly, that is, without removing the throttle assembly, in general, watch the video:

Source

Removing the fuel rail (step by step)

Fuel rail Car injectors on the VAZ 2109 are located on the fuel rail.
There are four of them here, this is due to the fact that a separate nozzle sprays fuel onto a separate cylinder. And since the nine has four cylinders, we can conclude that the number of injectors is logical. The fuel rail is the bar where the injectors are installed. It is fixed to the inlet pipe using bolts. To the left of it is a fuel pressure control fitting. It is worth noting that removing the fuel rail is the most problematic step in cleaning or replacing injectors.

Removing the fuel rail

1. First of all, you need to remove the fuel rail.
2. Then place it on a flat surface, and then disconnect the wiring harness from the damaged injector. To dismantle it, compress the spring mounting bracket and disconnect the block.
3. Using a screwdriver, slide the metal retainer toward the fuel rail. It is designed to fix the fuel sprayer. For some reason, many car enthusiasts completely remove the lock. However, there is no need for this. Just move it a little to the side.
4. Take the nozzle in your hand and swing it to the sides. This way it will come out of the fuel rail without any problems.

Removal and replacement

Now we’ll talk specifically about how to properly remove and replace old injectors that have lost their usefulness with new units.

The process of dismantling each of the 4 injectors is identical, so there will be no difference in the process.

Perhaps the most problematic step in replacing or cleaning injectors is dismantling the fuel rail. Therefore, we will separately tell you how this knot is removed.

Fuel rail

The fuel rail is the bar on which the injectors are mounted. It is secured with a pair of bolts on the intake pipe. To the left of the ramp there is a fuel pressure control fitting. To remove it you need:

• Disconnect the negative terminal from the battery. Nobody needs short circuits;
• Relieve pressure in the fuel line;
• Remove the air filter and disconnect the intake pipe hose, then remove the vacuum hose of the pressure regulator;
• Disconnect the power supply wire from the idle speed sensor. To do this, simply press out the pad retainer, made of plastic;
• Disconnect the block with the wires coming from the injectors;
• Disconnect the drain and supply hoses from the fuel pipes;
• Unscrew the pair of mounting bolts that secure the fuel rail to the intake pipe;
• The fuel pipes are held in place by a special holder, which requires unscrewing one mounting screw to remove;
• Remove the fuel rail by sliding it along the axis of the fuel nozzles. This way they will come out of their seat on the intake pipe;
• Assembly is performed in reverse order.

Removing the ramp
Please note that under the fuel rail mounting bolts there are washers, which must be returned to their place during reassembly or replaced with similar new ones.

1. First, remove the fuel rail from your vehicle.
2. Next, the ramp is laid on a flat surface, after which the wiring block is disconnected from the damaged injector. To remove it, you need to compress the spring mounting bracket and then disconnect the block.
3. Using a screwdriver, slide the metal retainer toward the fuel rail. It serves to fix the fuel nozzle. For some reason, many people remove the lock completely. There is no need for this. Just move it a little to the side.
4. Take the nozzle in your hand and rock it slightly to the sides. So it should come out of the fuel rail without any problems.
5. At the same time, be sure to check the current condition of the sealing rings of the fuel atomizer body.
6. The sealing ring of the nozzle spray element is checked in the same way. To do this, you need to pry both rings with a screwdriver and see if they are worn out.
7. In the case of fuel injectors, there is no need to change the O-rings when replacing the injectors themselves if they are in good condition. Only if you are going to reuse them, be sure to lubricate the rings with oil before installation. Motorized, of course.
8. When the nozzle is removed and the rings are replaced (or the old ones are left), you can begin installing new devices. The procedure is performed in reverse order.
9. Insert the nozzle into the hole on the fuel rail and secure it with the clamp.
10. Return the block with the wires to its place, and install the fuel rail in its rightful place.

Disconnecting the wiring block
Replacing injectors is not always the only and rational way to restore the functionality of fuel nozzles. Try cleaning them. This is not a difficult matter, but the savings are impressive .

VAZ 21099: injector repair - how to do it?

Installing an injector in a VAZ 21099 car

Reliable operation of the fuel system of the VAZ 21099 depends on the injector. Its clogging can lead to large excess fuel consumption, unstable idling and a decrease in engine power, and the car jerking during acceleration. Many gas stations sell low quality fuel that contains dirt, benzene, water, sulfur and olefin. This leads to the accumulation of tarry deposits in the fuel system, rail, and on the surfaces of the injector. This article discusses how to flush the injector on a VAZ 21099 car yourself.

Injection system VAZ 21099

The main elements of the injection system are shown in the diagram:

Diagram of the injection system of a VAZ 21099 car

• 1 – air filter;
• 2 – air flow sensor;
• 3, 4,10, - system hoses;
• 11 – electronic control unit;
• 13 – fuel filter;
• 14 – fuel tank;
• 18 – pressure regulator;
• 20 – injector ramp;
• 21 – nozzle;
• 26 – cylinder head.

How to properly wash the injector on a VAZ 2109 car

To clean the fuel injectors from tarry deposits that appear due to poor quality fuel poured into the gas tank, it is sometimes enough to wash the injector on a VAZ 2109. This can be done in a specialized workshop or with your own hands. The work process is as follows:

• Purchased: flushing fluid, syringe, set of new candles.

Advice: It is better to do the work with an assistant who will press the accelerator pedal to maintain the required engine speed.

• Mix 1.5 - 2 liters of gasoline, which is usually poured into the tank, and flushing liquid.
• The hood opens.
• On the hose connecting the intake manifold and the vacuum brake booster, the rubber adapter tube is disconnected.
• Using a syringe, the prepared mixture of washing liquid and gasoline is poured into it.
• About 20 minutes is enough for all the growths inside the device to come off.
• The assistant gets behind the wheel and the engine starts. The accelerator pedal must be held down, otherwise the engine will not maintain speed due to the tube being disconnected.
• The mixture is injected.

Tip: High pressure in the tube can cause the syringe to be pulled inward, so you need to gently press it, and the liquid will flow into the tube itself.

• There is no need to pay attention to the black pieces of garbage flying out of it and the emanating puffs of white smoke. All this may be accompanied by various sounds, especially in VAZ 2109 cars, injector cleaning, which has not been carried out for more than three years.

Tip: You need to pour in the washing mixture in small portions, this will wash the device better.

• When all the mixture is finished, the engine is turned off and time is given to cool down.
• A new set of spark plugs is installed.
• The engine workplace is wiped with a dry cloth.
• The hood closes.

For VAZ 21099, how to flush the injector is clearly shown in the video. If the injectors are covered with a crust of dark-colored varnish, it is difficult to clean by simple washing. Therefore, for prevention, it is necessary to fill the gas tank with cleaning additives after 5,000 - 6,000 kilometers.

The price of the cleaning product is affordable; one bottle is enough for 60 - 89 liters of fuel. This method is more often used to clean injectors on new cars.

Tip: There is no need to clean a contaminated injector with solvent. Dirt deposits can travel through the fuel lines from the gas tank to the rail and injectors, which can completely clog the intake channels and settle on injector filters made of nylon. Solvent is ineffective for removing such deposits, so its use is not only dangerous, but also a wasteful exercise.

Signs of malfunction of VAZ 2109 fuel injectors

There are a number of signs that indicate the need to at least remove and inspect the fuel nozzles. After this, a decision is made to replace or clean the components. Pay attention to how the vehicle and specifically the power unit behaves. They will point you to problems with the injectors. This can manifest itself like this:

• The motor produces less power, and the previous acceleration efficiency is not felt.
• With poor engine performance and lack of power, fuel consumption continues to increase.
• Poor starting is not a rare symptom of injector failure.
• If the power unit does not hold idle speed well, this may also indicate problems with the injectors.
• Increased amount of toxic elements in exhaust gases.
• Increasing idle speed.

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 at the same time, the engine starts to oscillate, then the injector is 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.

Methods for cleaning VAZ 2109 injectors (step by step)

There are two methods for cleaning fuel nozzles, each of which has its own nuances.

First way. You will need: a spare o-ring, carburetor cleaner (spray), injector cleaner.

Injector torches

• Take any container and pour injector cleaner into it.
• Place the sprayer in the container and let them sour for a while.
• At the same time, clean the idle speed control using carburetor cleaner.
• There is carbon deposits around the injector nozzles - coke. Its consistency is similar to resin. You'll have to pick it out and tinker a little with the dirt. This is how external cleaning is done.
• As for internal cleaning, you will need a pump with a pressure gauge (foot) and a voltage source of 3-12 Volts.
• In the pump, remove the end of the hose and pour injection cleaner inside, then put the hose on the nozzle.
• We pump it up to six atmospheres and apply a voltage of three volts. Add power if the injector does not click.
• It is necessary to supply electricity periodically, for a short time, while pumping it up with a pump. In the same way we pump all the fuel nozzles.

Second way. You will need: O-ring, pressure gauge, pump, carburetor cleaner (spray).

1. We change the injector cleaner to a spray.
2. We repeat the above steps, only with carburetor cleaner.
3. Then we make sure to clean the outside of the devices to remove carbon deposits.
4. To do this, apply the spray to a clean cloth and treat the fuel units with it.
5. Thanks to the product, the coke will soften and be cleaned off without any problems. You can help yourself with toothpicks or a screwdriver.
6. Before installing the sprayer in place, be sure to lubricate the O-rings with a solution of water and soap.

Cleaning

There are two ways to clean fuel nozzles, each of which has its own nuances. Choose for yourself which one you like best or is more affordable, taking into account the available funds.

Spray to the rescue

Cleaning method

Necessary materials

Features of the event

• Injector cleaner;
• Carburetor cleaner in spray form;
• Spare O-ring

• Carburetor cleaning spray;
• Pump;
• Pressure gauge;
• Sealing ring

Pro tips: how to choose new good quality injectors

All four injectors are removed and installed identically, so we will consider replacing only one injector. The dismantling of the injectors was described in detail above, so we move on to the next stage - replacement.

1. First of all, we check the condition of the sealing rings of the fuel atomizer housing.
2. Likewise, check the O-ring of the injector spray component. To do this, pry up both rings with a screwdriver and inspect them for wear.