Injector on VAZ 2106: installation without the help of specialists

The VAZ 2106 was produced for about 30 years and was the most popular sedan from the classic family of cars produced by the AvtoVAZ concern. The injector on the VAZ 2106 was installed only in the last 4 years of production - from 2002 to 2006, when the model in question was produced on the IzhAvto assembly line.

On the secondary market, this modification is quite rare and is unfamiliar to most fans of “sixes”. Many owners of classic cars with a carburetor power system want to install injectors on their cars. There are many reasons for this, including:

• eliminating the need to clean and adjust the carburetor every six months;
• no engine shaking at idle;
• easier and faster engine starting in cold weather and after long periods of inactivity;
• and what is also important is a reduction in fuel consumption after installing the injector by 10-15% with better dynamics.

Installing an injector on a classic Lada is a costly affair, but the costs incurred will pay off after 50,000 km or 1.5-2 years of intensive use of the car. Moreover, the cost of such modernization can be reduced if the work is performed without the help of specialists.

Features of the injector, list of equipment for replacement

Before installing the injector yourself, you should first of all turn to theory. The vast majority of VAZ 2106 cars (modifications 21060, 21061, 21064, 21065) were equipped with carburetor naturally-aspirated engines of 1.45 and 1.6 liters with the same cylinder head (cylinder head) - 2101.

This cylinder head is not suitable for installing an injector on it, since it has inlet holes of inappropriate shape and does not have studs for attaching the intake manifold to the receiver. Of course, you can remake it for cost-saving reasons, but if you do not have special knowledge, then it is better to purchase a ready-made cylinder head assembly from the modernized Niva - 21214.

The Niva's engine is not much different from the 2106 engine, so its cylinder head is ideally suited to the design characteristics.

In case of financial problems, you can purchase an empty cylinder head and replace the valves and other things from the old head into it. But again, this requires knowledge and experience. In addition to the cylinder head, you will need to purchase the following equipment from the VAZ 21214.

1. The ramp is assembled with nozzles and pressure regulator.
2. The receiver is complete with a throttle assembly and idle air control.
3. Intake manifold.
4. Gasket for intake and exhaust manifolds.
5. Receiver gasket.
6. Front engine cover with a hole for the crankshaft position sensor (CPS).
7. Crankshaft pulley with space for DPKV.
8. DPKV.
9. Throttle position sensor (TPS).
10. Instant air flow sensor (MAF).
11. Antifreeze temperature sensor.
12. Speed ​​sensor.
13. Knock sensor (DS).
14. Accelerator pedal with drive cable.

Model characteristics - convenience and practicality

The injection model has a 1.6 liter engine. The design of the car has been improved with hydraulic compensators, which make the engine much quieter. The car's rear-wheel drive makes it stable on the roads, especially in the winter when there is ice outside. Overall, this car is very convenient for our roads and practical. The carburetor model had very high fuel consumption, but this problem was eliminated in the injection car.

The VAZ 2107 was created on the basis of the VAZ 2105 prototype, because it had proven itself very well in the domestic market at one time.

The design of the VAZ 2107 chassis also makes the car practical and durable in off-road conditions. The car has, and the rear part contains a strong beam. This car model can be repaired at any service station. The price of the VAZ 2107 is especially pleasing; it is significantly lower than the cost of other VAZ models. The availability of spare parts for cars of this brand also pleases owners, because they can be purchased without much difficulty at any auto store.

Preparing for installation

After purchasing all the necessary spare parts, you can begin upgrading. First you need to dismantle unnecessary equipment, in particular:

• loosen and remove the generator belt;
• remove the crankshaft pulley and camshaft drive cover;
• dismantle the distributor, fuel pump and switch;
• remove the carburetor and air filter;
• dismantle the old cylinder head along with the manifolds;
• unscrew the exhaust manifold and coolant distributor tee from the cylinder head (located in front of the manifolds in the direction of travel of the car);
• dismantle the accelerator drive rods, the gas pedal and unnecessary wires (to the coolant sensor, ECXX, distributor);
• remove the gas tank (if it will be replaced).

Next, preparatory activities should be carried out.

1. Drill a hole on the ebb of the coolant distributor tee, screw a new antifreeze temperature sensor into it and install the tee on the new cylinder head.
2. Secure the TPS in its proper place in the throttle valve assembly.
3. Close the holes in the block left after removing the mechanical fuel pump and distributor with plugs.
4. Extend the return line to the fuel tank, if there is none.
5. Attach the electric fuel pump mounting bracket in the trunk or under the bottom and embed the fuel pump into the fuel supply hose.

Installation of the injection system

After completing the preparation, you can begin installing the injector.

1. First you need to install the cylinder head from the VAZ 21214 on the cylinder block.
2. Then you need to install a new front block cover, a new crankshaft pulley and secure the DPKV.
3. Place the gasket on the cylinder head intake and exhaust ports and screw the new intake and old exhaust manifolds into place.
4. Place the spacer over the triangular mounting area where the 2 studs are located and a simple spacer over the manifold inlet ports.
5. Insert the fuel rail with injectors into the exhaust pipes and secure it with 2 screws.
6. Screw the receiver assembly with throttles and idle air control into its proper place.
7. Secure the DD to the screw securing the distributor plug.
8. Hook the speed sensor onto the speedometer drive gearbox.
9. Attach the ignition module to the engine shield next to the brake reservoir.
10. Secure the gas pedal to the right studs of the VUT.
11. Attach the gas cable with one end to the pedal, the other end to the throttle assembly and secure it to the receiver bracket so that it sags slightly.
12. Finally, you need to attach the fuel supply hose and the return hose to the injector.

After this, all that remains is to install the control unit, connect sensors and the rest of the machine’s wiring to it according to the presented diagram. The average cost of installing an injection is about 20,000 rubles, but it is reduced several times when using used spare parts.

The operation of a carburetor engine is accompanied by several problems (failures). After all, the carburetor needs to be adjusted periodically, the idle speed often fluctuates, and in severe frost there can be problems starting the engine. In addition, in order to prepare the fuel-air mixture (FA) with the correct ratio, you need to carefully adjust the position of the mixture quality and quantity screw. In addition, the level in the float chamber affects fuel consumption. In addition to these nuances, problems arise with ignition and the accuracy of its installation. Therefore, car owners remake carburetor engines and install an injector with their own hands.

Advantages of VAZ 2107 injection models

• Due to the optimal formation of the fuel mixture, the efficiency of an injection engine is higher than that of a carburetor. Accordingly, the VAZ 2107 injector engine consumes less fuel and is at the same time more powerful than a carburetor engine with the same volume.

Electronics regulate engine speed, thanks to which it idles more steadily, stalls less often when starting from a standstill, and starts better in cold weather.

• Unlike a carburetor engine, an injection engine does not require frequent adjustment of the fuel supply and ignition systems.
• The optimal composition and quantity of the fuel-air mixture entering the cylinders, as well as the presence of a catalyst, ensure a minimum content of harmful substances in the exhaust. This is an important point from an environmental and health perspective.
• Hydraulic chain tensioner and hydraulic valve clearance compensators eliminate the need for manual adjustment of the mechanism and ensure quieter engine operation.
• The torque curve is smoother - high torque is achieved over a wider rpm range.

Concept

Operating principle of the injector

The word injector comes from Lat. injicio, which means to throw away. In practice, an injector is a pump that releases liquid or gas under pressure.

The VAZ injector is an injector controlled by an electronic unit (ECU).

In order to supply the required amount of fuel assembly to the combustion chamber of each cylinder, it is necessary to know the mass of air and fuel. For this purpose, appropriate sensors are installed on the car, the signal from which comes to the ECU.

The device of a simple injector

The simplest car injector includes:

• Sensors;
• Electric fuel pump;
• Controller (ECU);
• Pressure regulator;
• The actual injector (nozzle).

Sensors are needed to measure parameters such as:

• Air mass;
• Throttle position;
• Air temperature;
• Fuel consumption;
• Crankshaft position.

The ECU is the brain of the fuel injection system. It controls the injectors according to a certain algorithm, processes signals from sensors, and makes the necessary calculations.

The electric fuel pump forces gasoline to the pressure regulator, which maintains constant pressure in the system.

The injector is a solenoid valve that is activated when control voltage is supplied from the ECU. The opening moment of the injector determines the amount of fuel and air supplied to the combustion chamber. The fuel assembly supply channel of the injector is designed in such a way as to ensure effective atomization and distribution of the mixture in the cylinder.

Malfunctions of the VAZ 2107 injection engine

Problems with the 7 injection engine usually manifest themselves as follows:

• The engine is running erratically.
• Fuel consumption of the VAZ 2107 has been increased.
• There is an increased CO content in the exhaust gases.
• Dips when pressing the accelerator pedal.
• The engine “does not pull” (reduced power).
• To diagnose injection system faults, special equipment is required. In particular, in order to read error codes and check sensor readings and the operation of the engine ECU, a special computer (tester) is required. Therefore, repairs and diagnostics of the VAZ 2107 injector are carried out at specialized service stations. The most common cause of injector failure is clogged injectors.

How to install an injector on a VAZ 2106

Installing an injector on a VAZ is accompanied, first of all, by purchasing the necessary parts. There are special kits for sale for the VAZ 2106. You just buy and install. A description of the installation process is usually included in the kit. This installation is the simplest option for the VAZ 2106. However, buying the entire kit will be quite expensive. In this case, of course, you won’t have to rack your brains over what, how and where to put it.

Another option is to purchase all the parts separately.

Preparation

Installation of the injector is carried out after preparing the VAZ 2106:

• Removing the carburetor;
• Remove the carburetor wires;
• Ignition coil;
• Switch (if any);
• Drain the coolant;
• Disconnect the intake and exhaust manifold;
• We change the forced cooling of the radiator to electric;
• We change the gas tank to another with an electric fuel pump;
• Remove the distributor and fuel pump;
• We install the plugs in their place.

Before you buy all the equipment, you need to decide which controller will be installed on the car. Depending on this, we purchase everything else.

Equipment installation

Installing a crankshaft position sensor (CPS) requires replacing the VAZ 2106 engine cover with a new one with a shimmer. To do this, you will first need to remove the crankshaft pulley. When a new cover is installed, all the sealing parts are changed. The engine head will need to be bored out or replaced with a new one from the injection Niva, since the carburetor has smaller inlet ports than the injection one. In addition, it will be necessary to provide for mounting the receiver.

Next, we fix the receiver, the ramp with injectors, and the exhaust manifold. Don't forget about gaskets between connections. We screw the throttle assembly to the receiver. You also need to install an ignition module and a knock sensor (DS). On some engine models, installing the latter can be difficult because it needs to be positioned as close to the cylinders as possible.

A fuel filter must be inserted into the rupture of the supply tube. We select it from those available for sale. It all depends on your preference.

The speed sensor is located between the gearbox and the speedometer cable input. It will be most convenient to extend the pipe for reverse drainage of fuel along the bottom of the VAZ 2106 car.

Difficulties in reworking

Since the work is quite labor-intensive and takes a lot of time, we recommend performing the steps in stages. The quality of components and their assembly play an important role during work. Beginners may have difficulty securing some elements, so it is better to call for help from a familiar car service specialist or a person who has replaced a carburetor with an injector before.

Replacing a carburetor with an injector will require you to be careful and careful. You will need to replace a lot of parts, and this is quite difficult for a beginner to do. But if you wish and strictly follow the instructions, you can perform a really serious modernization of your car and save a lot on car service costs.

Sources

• https://auto-gl.ru/peredelka-karbyuratora-na-inzhektor-na-vaz-2109/
• https://autodont.ru/dvigatel/injector/ustanovka-2
• https://expertVAZ.ru/2106/inzhektor-ustanovka.html
• https://vsepoedem.com/story/zamena-karbyuratora-na-inzhektor-i-naoborot
• https://KrutiMotor.ru/kak-peredelat-inzhektornyj-dvigatel-v-karbyuratornyj-i-naoborot/
• https://scart-avto.ru/remont/kak-peredelat-karbyurator-na-inzhektor-plyusy-i-minusy-vse/
• https://auto-garazh.mirtesen.ru/blog/43854473792/Zamena-karbyuratora-na-inzhektor-na-avtomobilnom-motore.-Stoit-l

Carburetor vs injector

An injector malfunction is much more difficult to resolve than a carburetor malfunction. You need to connect to the controller, and for this you have a special program. Otherwise, you will have to contact a car service, and you have to pay for it. The injector has more parts distributed under the hood. Moreover, the quality of the fuel also plays a big role. A large number of sensors requires a lot of wiring. The injectors sometimes become clogged, or the electromagnet winding burns out. Interference and interference affecting the wiring distorts the signals, so the location of its installation plays an important role.

Undoubtedly, the injector accurately doses the mixture into the combustion chambers and prepares it with the required composition. Fuel economy in this case is natural. In addition, in winter the car starts better; idle speed does not need to be adjusted frequently. The car becomes more responsive and powerful.

The carburetor can be repaired almost on the knee. It is easy to remove, disassemble and assemble. If there is no source of compressed air nearby, you can blow it out with your mouth using a tube. Adjusting it will not be difficult if you have the appropriate knowledge.

It's up to you to install an injector or leave a carburetor!

Disadvantages of the injection model of the VAZ engine

In addition to its advantages, the injection VAZ 2107 has some disadvantages:

• The location of the engine and other units in the engine compartment remains the same as in the old-style “classic”. This makes it difficult to access some parts. However, the injection system is quite reliable, so it does not require frequent maintenance during operation.
• The injection “seven” is equipped with a catalyst, which is easily damaged when driving through obstacles. Therefore, you need to be careful when driving on uneven roads.
• An engine with an injector is more demanding on fuel quality than a carburetor variation. When using low-quality gasoline, the system may become contaminated, requiring unscheduled maintenance of the unit.
• If the injection system breaks down, it will not be possible to repair it and adjust it “on the knee” in a garage. You'll have to go to a service station.