Distributor VAZ 2107 contactless device

A distributor is a device responsible for producing a spark at the right moment. The part is installed on internal combustion engines. When the piston is at the top point, ignition occurs.

A distributor is a breaker-distributor. Without it, not a single gasoline internal combustion engine can operate. You can find this device on cars such as:

Without a distributor, the timely formation of a spark in the engine cylinders would be impossible.

PURPOSE OF THE DEVICE

One of the most important subsystems of a gasoline engine is the ignition system. The fact is that normal operation of the engine is possible only if the combustion of the fuel-air mixture occurs in a timely manner. Otherwise, the entire work algorithm is disrupted.

During operation of the device, voltage is generated. It is served on candles. It is on them that the spark necessary to ignite the mixture is formed. As a result, the engine starts working and the car moves in the right direction.

For all the processes described above to become a reality, a distributor is needed. In this system it performs the following functions:

Acts as an initiator of spark formation. This occurs due to the opening of contacts.
The device directs the generated voltage to the desired spark plug.
The distributor can, if necessary, change the moment of sparking. This parameter is determined by the driving mode selected by the driver. Also, a lot depends on the quality and type of fuel.
The device is capable of storing energy in a bobbin.

As you can see, the part performs many functions. It is not surprising that without its normal operation, the operation of the engine is impossible.

Why do you need a distributor?

The ignition system is a critical part of a gasoline engine. The operation of the latter is based on the timely combustion of the fuel-air mixture (FA), for which purpose a high-voltage voltage is specially generated, which is then supplied to the spark plugs. A spark is formed on them, causing combustion of the fuel assemblies, as a result of which the engine performs useful work. This is roughly how you can briefly describe the operating principle of a gasoline internal combustion engine.

All these processes require a distributor. If we evaluate its role during the operation of the ignition, it should be noted that it:

initiates the onset of sparking due to the opening of the breaker contacts (in more modern car models, for example, VAZ 2109, 2106, 2107, 2108 of the last years of production, a Hall sensor is used for these purposes);
directs the high voltage generated in the ignition coil to the desired spark plug;
changes the beginning of the moment of spark formation depending on the driving modes and the fuel used, for which vacuum centrifugal regulators are used;
provides accumulation and discharge of energy in the reel.

A functional ignition diagram will allow you to better understand what the distributor is used for and how it works:

Distributor design

The distributor circuit assumes the presence of such elements as:

low voltage current breaker;
high voltage current distributor;
centrifugal ignition timing regulator;
vacuum ignition timing regulator.

The distributor circuit is designed so that at a certain moment the breaker opens the primary ignition circuit, as a result of which a high voltage current is created in the secondary winding of the ignition coil. Through the distributor, this current is transmitted to the spark plugs in certain cylinders. The regulators automatically adjust the ignition timing, which depends on the current operating mode of the engine.

The distributor breaker is an electromechanical part and consists of the following parts:

shaft;
movable contact plate;
movable contact plate;
capacitor;
frame.

The breaker shaft consists of two main parts. On one of them, depending on the type of breaker, cams are installed, the number equal to the number of cylinders in the engine. This distributor device is not very reliable, since a large number of contacts, as well as the presence of moving parts, lead to regular problems with this unit.

The distributor device, as well as its use in general, are outdated from the point of view of modern electrical equipment, but in our country there are still a lot of carburetor engines, so the problem of the performance of this unit is currently relevant.

As for where the distributor is located in the car, most often it can be found under the hood next to the engine, near the cylinder head or on it. Although the exact location of the node depends solely on the model of the machine.

Operating principle of the distributor

In many ways, the operating principle of the distributor remained unchanged for many years. In VAZ cars, such as VAZ 2109, 2106, 2107, 2108, an ignition system of this type was used almost until the end of the last century.

The basis of the work is the connection of the distributor with the engine crankshaft. When the piston in the first cylinder takes the position corresponding to TDC, the breaker contacts open, a high voltage appears in the ignition coil, directed through a slider located in the distributor cover to the spark plug of the first cylinder.

There the combustion of the fuel assembly occurs, and the crankshaft continues to rotate. In addition to moving the pistons, it causes the breaker cam to rotate. When in another cylinder another piston occupies a position corresponding to TDC, at this moment the breaker contacts in the distributor open again, and a high-voltage voltage is generated in the ignition coil and supplied to the desired spark plug.

This joint rotation of the crankshaft, the breaker cam and the distributor slider ensures that a spark appears where and when needed. However, this does not cover all aspects of how the distributor works. To understand its operation, it is necessary to touch upon such concepts as the angle of the closed state of contacts (UZSK) and the ignition timing angle (IAF)

UZSK

A concept such as UZSK characterizes the time when the breaker contacts are closed. In essence, this is an indirect characteristic of the accumulation of energy in the coil after the completion of spark formation. UZSK directly affects the amount of energy spent on sparking and, accordingly, on engine operation.

In cases where the distance between the contacts is small, the coil will not accumulate the necessary energy and the spark energy will be low, which will lead to interruptions in the operation of the motor. A large gap also leads to interruptions, since the contact breaking time is reduced and the coil does not have time to fully discharge.

Each ignition system has its own optimal UZSK, to ensure which, if necessary, the distributor must be checked and adjusted.

UOZ

This concept concerns the moment of ignition of a fuel assembly. The fact is that its combustion does not occur instantly, and often, to ensure optimal conditions for such a process, it must begin earlier than the piston reaches the TDC position. The OZ characterizes the time by which the appearance of a spark precedes the appearance of the piston in the TDC position.

Design and principle of operation of the BZ

Contactless or electronic ignition on the VAZ 2107 is installed on models with injection engines. Carburetor sevens were supplied from the factory with contact ignition systems, which have many disadvantages. If you plan to install a contactless ignition module, then before starting it won’t hurt to understand the issue of its design.

The ignition system is the mechanism by which a pulsed voltage is created to supply the spark plugs in order to promptly ignite the fuel-air mixture in the cylinders. The main disadvantage of contact SZ is that the contact groups require regular cleaning, replacement and adjustment. As soon as difficulties arose with igniting the combustible mixture, the car owner immediately knew where to look for the reasons.

With the advent of the BSZ, these difficulties automatically disappeared. To understand why, let’s look at the components of the mechanism:

Electronic type switch with transistors.
Double winding coil.
A distributor or distributor equipped with a Hall sensor, a slider and a contact cover.
Spark plugs with armored wires.

The BSZ diagram for the VAZ 2107 is shown in the photo below.

Ignition circuit for VAZ 2107

Based on this diagram, let's consider the principle of its operation:

When you turn the ignition key, current is supplied to the primary winding of the coil, thereby creating a magnetic field.
When the engine starts, power is supplied to the starter coil and the rotor begins to turn the crankshaft.
In this case, the crankshaft rotates the distributor shaft, which is connected to the runner.
As soon as the shaft with the slider rotates, this phenomenon is detected by the Hall sensor (along the protrusion on the shaft) and transmits the corresponding signal to the switch.
When a signal arrives at the switch, the primary winding of the coil is de-energized (on the low-voltage side).
A powerful discharge of about 25-30 kV is induced in the secondary (high-voltage) winding, transmitted to a moving contact located at the end of the distributor shaft.
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When the slider moves in a circle, it practically touches the contacts in the cover, a spark occurs between them, and a high voltage discharge is transmitted to each of the contacts in turn.
This discharge flows through armored cables to the spark plug electrodes.

The mechanism in question received the name “contactless” due to the connection and disconnection of the circuit of the primary winding of the coil with a commutator due to the output transistor (without using contacts).

Operating principle of BSZ

Electronically controlled spark generation operates according to a fairly simple algorithm, which determines the reliability of such a circuit. When the driver turns the key in the ignition switch, a constant voltage from the on-board network is applied to the primary winding of the coil, causing a magnetic field to form around it. Then the system works like this:

The starter turns the crankshaft and drives the distributor shaft along with the slider.
The Hall sensor, which reacts to the passage of a metal mass nearby, registers the rotation of the shaft along the protrusion on it and sends a signal to the switch.
The electronic unit, based on a signal from the sensor, turns off the voltage supply to the primary winding of the coil.
At the moment the circuit breaks, a high voltage pulse (up to 24 kV) is formed in the secondary winding of the coil. It is directed along a thick wire to the moving contact of the distributor.
The slider redirects the impulse to one of the fixed contacts built into the cover. From there, the voltage goes to the spark plug of the cylinder where the piston is at top dead center.
At this moment, the fuel is already in a compressed state in the combustion chamber. When a spark jumps across the electrodes of the spark plug, it ignites.
The runner rotates and transmits a spark to all cylinders according to the 1-3-4-2 scheme, after which the car engine starts and starts working.

Note. In old VAZ 2107 cars there was no switch, and the electrical circuit was broken mechanically - the shaft cam opened the contact group.

Outdated circuit with contact breaker

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Pros and cons of the system

If you decide to install a carburetor-type BSZ on a VAZ 2107, then it is recommended that you first understand all the advantages and disadvantages of the device. The advantages of the mechanism under consideration include:

The absence of contacts automatically eliminates the need for their maintenance. As a result, we have a more reliable system that does not require frequent maintenance.
Stability of spark propagation through the cylinders, which is due to the absence of the breaking effect of the contacts using the cam method.
A large discharge in the spark plug, the value of which reaches 25-30 kV, while in contact modules it does not exceed 12 kV. High voltage promotes a stronger spark and improved ignition of the fuel assembly, as well as its complete combustion.
Simplified engine starting at low temperatures.

This system has much fewer disadvantages, and they consist in the impossibility of repairing the Hall sensor, which has a relatively short service life of up to 50 thousand km. In addition, such a system is more expensive, due to its design features.

What is included in the electronic (contactless) ignition kit for VAZ 2107

The contactless ignition system for VAZ includes:

distributor;
ignition coil;
switch;
set of wires

DETAILS ABOUT THE MOST IMPORTANT ELEMENTS OF THE TRAMBER DEVICE

VACUUM REGULATOR

It is this device that can change the OZ if necessary. As soon as the motor load changes, appropriate adjustments are made to the operation of the distributor device parts.

The vacuum regulator of the distributor is a closed cavity. To ensure better performance, the design is divided by a diaphragm. One cavity goes directly to the carburetor.

When a vacuum occurs, the diaphragm begins to move. As a result, pressure is exerted on the movable disk and the breaker cam. The response time of the latter is adjusted depending on the current situation.

OCTANE-CORRECTOR

This is a very important element in the distributor design. Without it, the entire system could not function normally. The unit changes the SOP depending on the fuel that is currently being used.

By its design, this distributor element resembles two plates with an arrow. The same arrow is installed on the engine. There are special lines on it, through which the ignition angle is adjusted. It is almost impossible to do without this part when refueling different types of gasoline.

Distributor malfunctions

The following signs indicate that the distributor is malfunctioning:

When there is a spark on the central wire, but not on the spark plug wires, this indicates a breakdown of the slider.

the car jerks periodically when driving;
Unstable engine operation at idle;
the engine does not start at all;
the knocking of the piston fingers is heard while accelerating;
the speed increase dynamics decreased;
fuel consumption has increased.

In most cases, the causes of distributor failure are:

Breakdown of the roof and ignition coil occurs due to large gaps in the contacts of the distributor cover and slider, spark plugs and bad candlesticks.

burnout of the runner;
oxidation or shorting of contacts under the cover;
breakdown of the distributor cover;
failure of one of the sensors;
problems with the shaft bearing and other problems.

In each of these cases, replacement is required. But at the same time, for almost any car, it is possible to change not the entire distributor, but only its failed part, which is an advantage, since it significantly reduces the cost of repairs.

The most basic check of the distributor is a visual assessment of the condition of the slider, contacts and cover.

In a contactless distributor, the main malfunction is the failure of the hall sensor or inductive sensor.

To check the ignition system and distributor, among other things, observe the spark on the unscrewed spark plug after starting the engine. In garage conditions, you can also check using measuring instruments or indicators.

The distributor capacitor is also one of the parts that often fail. It helps to increase the voltage supplied to the spark plugs when the engine starts. And in order to check it, you need to disconnect it and touch the “ground”, and if a characteristic crackling sound is heard and a voltage drop is observed, the capacitor is working, if this does not happen to the replacement part.

A distributor is always a dismountable unit that can be disconnected, removed from the car, disassembled into components, a problem can be detected and eliminated by replacing the damaged part.

The design and principle of operation of a distributor breaker or distributor - video

Some owners of classic cars of the VAZ 2101-07 family are constantly trying to improve, modify, add electronics and convenience. One of these improvements is the installation of contactless electronic ignition.

Device malfunctions

Replacement and repair of the distributor on the domestic “six” is carried out in the event of incorrect operation of the mechanism.

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Below are the main symptoms of breakdowns that indicate possible malfunctions:

The vehicle jerks while driving. Moreover, these jerks are completely uncharacteristic of a car.
The engine generally does not start.
When trying to accelerate the car, the car may also jerk, and the acceleration process itself takes a lot of time, and the engine may detonate - the piston rings knock.
Increased fuel consumption.

As you can see, in general the symptoms are similar to those that appear when the ignition is set incorrectly. Of course, if such symptoms appear, it cannot be said for sure that the fault lies in the distributor, but attention should also be paid to diagnosing this unit.

As for the breakdowns that may force the car owner to repair or replace the mechanism, they are as follows:

The unit slider is worn out and burnt out.
The problem lies in the cover itself - the contacts on it could have burned out.
Hall sensor failure. The problem may be associated not only with a breakdown of the controller, but also with poor contact on the regulator plug.
Another reason that domestic drivers encounter quite often is the distributor bearing. After a long period of use, it could become loose, but it could also simply jam.
Presence of mechanical damage, including cracks on the cover.
Engine fluid gets into the distribution unit; usually the problem is related to the seal of the cap.

Which ignition is better: contactless or contact?

Contact ignitions are obsolete, but are still used in older cars. On rear-wheel drive VAZ models, contactless was first installed on 2107.

Let's look at the differences between contact and non-contact ignition:

Advantages of contactless ignition:

since there is no contact group in the distributor, sparking occurs clearly;
long coil life;
at medium engine speeds, BSZ creates a spark 4 times more powerful than contact ignition. This is especially useful if the spark plugs are dirty, as a spark will still be produced;
performs its functions perfectly even in cold weather;
if the voltage in the electrical network is low, then sparking will still occur;
thanks to the powerful, stable spark of the candles, the fuel-air mixture ignites faster;
if BSZ is installed, then fuel consumption decreases and engine power increases;
improved vehicle acceleration dynamics;
BSZ is easier to maintain because the device has no moving parts.

Non-contact ignition system device

The BSZ device for carburetor engines consists of:

Distributor. This is a device that is responsible for creating a spark at the right moment. It is also called the ignition system distributor.
High voltage coil. This element in the ignition system receives low voltage from the battery, converts it and supplies high voltage. Therefore, high-voltage wires come from it. The coil consists of two windings. The primary one is made of a large cross-section wire (connected to the electrical part of the car via the ignition switch relay), the secondary one is made of many turns of thin wire (connected with a high-voltage wire to the distributor).
Switch. This element of the contactless ignition system is responsible for the formation of a spark. In simple words, a switch is a signal amplifier. The switch is only available in the ignition system of internal combustion engines with a carburetor. By the way, SOLEKS is considered the best carburetor. On injection VAZ 2107, as well as on others, a switch is not needed, since its functions are performed by the on-board computer controller.
High voltage and normal wiring. High voltage wiring must meet heavy insulation requirements.
Terminals. Serve for connections and must be strong.

Electronic and contactless ignition systems are the same device. It got its name due to the absence of a contact group in the system design. The ignition switch also has a contact group, which is a common cause of engine failure.

Electronic ignition connection diagrams: VAZ 2101-VAZ 2107

Scheme of a contactless ignition system for VAZ cars:

1 - switch; 2 — ignition coil (bobbin); 3 — distributor; 4 — ignition key; 5 - Hall sensor.

How contactless ignition works

The sequence and principle of operation of the BSZ is as follows:

The driver turns the ignition key.
The circuit is closed and constant voltage from the battery is supplied to the primary winding of the ignition coil. The energized primary winding forms a magnetic field around itself.
When the starter starts, it begins to rotate the crankshaft of the internal combustion engine and rotates the shaft, which is located inside the distributor along with the slider.
The hall sensor detects how the distributor shaft rotates (along the protrusion on the shaft) and transmits a signal to the switch.
The electronic unit turns off the voltage supply to the primary winding based on the signal from the Hall sensor.
When the voltage supply circuit is interrupted, at that moment a high voltage pulse of up to 24 kilovolts appears in the secondary winding of the coil, which is transmitted through a thick wire to the slider (the moving part of the distributor).
Fixed contacts are built into the roof. The runner throws an impulse onto one of these stationary contacts. From the contact that received the high voltage pulse, it is transmitted through high-voltage wires to the spark plugs of those cylinders in which the pistons are at top dead centers.
When voltage is applied to the spark plug, the working combustion chamber of the cylinder already contains fuel and air in a compressed state for ignition.
The distributor slider rotates to spark all spark plugs according to a certain sequence pattern: 1-3-4-2. Depending on how to install the slider, the entire operation of the system depends, early ignition or later, we learned to determine in another material.
The car engine starts.

ECMs are sometimes interchangeable, but sometimes they are not repairable.

Diagram of an outdated VAZ ignition system (without switch)

This scheme is in systems where there is no switch. The circuit is broken mechanically using a breaker.

Disadvantages of contact ignition:

The contacts burn and oxidize, which reduces the power to create a spark.
There are wear parts that are recommended to be changed every 20 thousand km. mileage
Converted power in contact systems is up to 18 kilovolts. For electronic or contactless ones - up to 24 kilovolts.

Disadvantages of contactless ignition:

The Hall sensor cannot be repaired. Working service life up to 50 thousand km. mileage

CONTACTLESS IGNITION SYSTEM

The ignition system (IS) serves to create a pulse voltage and timely ignite the combustible mixture in the combustion chambers of the power unit. It is the main part of the vehicle's energy supply system.

The evolution of the “seven” ignition began with a contact-type mechanism. Its feature was the process of generating an electrical impulse using a group of contacts located in the distributor. The constant mechanical and electrical loads to which the contacts in such a system were subjected led to the fact that car owners very often had to clean them, change them and adjust the gap between them. In principle, this was the only significant drawback of contact-type ignition, and drivers, when problems arose with ignition of the mixture, knew exactly what needed to be checked and repaired.

The contact type ignition system was not reliable and required constant maintenance

In the early 90s of the last century, the “seven” received contactless ignition. It made the life of the owners of these cars much easier, because in its design there were no longer any burning contacts that required constant adjustment. They were replaced by an electronic switch that does not require any maintenance.

DESIGN OF THE CONTACTLESS IGNITION SYSTEM AND ITS OPERATION PRINCIPLE

The contactless ignition system (BSI) of the VAZ 2107 includes:

electronic (transistor) switch;
transformer coil (two-winding);
distributor (distributor) with Hall sensor, contact cover and slider;
set of high-voltage wires;
candles.

Each of these elements is a separate part and performs its functions independently of other components. Sparking in a VAZ 2107 engine with a non-contact ignition system occurs according to the following algorithm:

When voltage is applied to the starter, its rotor begins to rotate the crankshaft, which, in turn, rotates the distributor shaft with the slider.
The Hall sensor reacts to this rotation, registers the rotation of the distributor shaft and transmits a signal to the switch. The latter, having received a signal from the sensor, turns off the current supplied to the primary (low-voltage) winding of the coil.
At the moment the current is turned off, a powerful voltage pulse occurs in the secondary winding of the transformer, which is transmitted through the central wire to the slider (moving contact) located at the end of the distributor shaft.
The slider, moving in a circle, alternately comes into contact with four fixed contacts located in the distributor cover. At certain moments, it transfers tension to each of them.
From the stationary contact, current flows through a high-voltage wire to the spark plug, causing sparking at its electrodes.

In a contactless ignition system, the role of a breaker is performed by a Hall sensor and a switch

Selection of BSZ

When purchasing a new BSZ, you should pay attention to the presence of the components of the entire kit. The factory kit should contain:

Distributor (main distributor). The code for engines 1.5 and 1.6 is 38.37061. For 1.3 engines, the number will be 38.3706–01, because the height of the 1.3 engine block is lower and the distributor shaft is shorter.
Switch number 36.3734 or 3620.3734.
High voltage coil (reel). Marking 27.3705
Thin wires with connectors.

In appearance, the BSZ kit for the VAZ 2121 NIVA is very similar. But it’s better not to install this kit on a VAZ 2107 or a VAZ 2106, because the characteristics of the “six” and “seven” are very different from the “Niva”. Distributor brands for Niva: 3810.3706 or 38.3706–10.

The best manufacturer of electronic ignition systems for old VAZ cars is. The production capacity base is located in the city of Stary Oskol. According to reviews from car owners of classic BSZ SOATE models, this is an excellent option.

Installation of contactless ignition for VAZ 2107, 2106

To install the BSZ with your own hands, you will need the following tools:

Screwdrivers (flat and Phillips);
Open-end wrenches 8, 10, 13 mm;
Pliers (pliers);
Candle key;
Drill or screwdriver with a drill diameter of 3-3.5 mm. You will have to drill two holes in the body to secure the switch.
A special wrench for rotating the crankshaft of an internal combustion engine or a regular open-end wrench of 30 mm.

An inspection hole for installing the ignition is not required. Here, in fact, is the procedure for removing the old contact ignition:

Open the hood, disconnect the battery and disconnect the high-voltage wires from the spark plugs.
Unscrew the spark plugs.
Rotate the engine crankshaft until the piston in the first cylinder reaches top dead center (TDC). You can use a long screwdriver or wire to check where the piston is located. Make sure that the mark on the engine crankshaft pulley coincides with the very first long mark on the cylinder block.
Disconnect the latches of the distributor cover and remove it with the wires. Draw a mark on the valve cover opposite the slider.
Disconnect the hose coming from the carburetor and all distributor wires.
Unscrew the fastening nut and remove the distributor along with the gasket.
Unscrew the coil mounts (remember which wires are attached where) and remove it.

The procedure for installing contactless electronic ignition on a VAZ 2106-2107.

Drill and attach the commutator next to the coil. But, do not place it under tanks with liquid.
Remove the cover of the new distributor and put on the gasket.
Install into the seat for the distributor so that the moving contact is opposite the drawn mark on the valve cover. Do not immediately tighten the nut all the way.
Install the new coil where the old one was. The wires from the ignition switch relay, tachometer, and switch must be connected to the reel terminals. The wire from the electronic unit number 1 is connected to the coil terminal marked “K”, the wire from the 4th contact is connected to the coil terminal marked “B”.
Check the gaps of the spark plugs (should be 0.8-0.9 mm) and screw them in place.
Snap the distributor cover and connect the high-voltage wires (the central one from the coil and 4 wires to the spark plugs). We connect the wires to the spark plugs strictly in accordance with the designations.
Connect the vacuum hose.

After installation in the correct sequence, we start the engine and begin setting up the ignition. If after installing a new electronic contactless ignition the engine does not start, you should check the correct connection of the coil wires and the high-voltage wires to the spark plugs. If the wires are normal, then the marks are not aligned.

Adjusting the ignition of the VAZ 2107

Acceleration dynamics, fuel consumption, trouble-free engine starting and exhaust toxicity of carburetor VAZ 2107 directly depend on correctly installed ignition. If the ignition system (IZ) of newer injection models does not require special adjustments, then cars with an older contact system require periodic adjustment.

In what cases is ignition adjustment required?

Over time, the factory ignition settings get lost or no longer correspond to the operating conditions of the vehicle. Thus, the need to adjust the SZ arises when using low-quality fuel or fuel with a different octane number. To assess the feasibility of this procedure, the ignition timing is determined. This is done as follows.

We accelerate the car to 40 km/h.
We sharply press the accelerator pedal and listen to the sound of the engine.
If noise appears and disappears when the speed increases to 60 km/h, then there is no need to adjust the SZ.
If the noise and detonation do not disappear as the speed increases, then the ignition is early and requires adjustment.

If the ignition timing is set incorrectly, fuel consumption will increase and engine power will decrease. In addition, a number of other problems will arise - an incorrectly installed ignition will reduce the service life of the power unit.

If a spark forms on the spark plug earlier than expected, the expanding gases will begin to counteract the piston rising to the top position. In this case, they talk about early ignition. Due to too early ignition, the rising piston will expend more effort to compress the resulting gases. This will lead to an increase in load not only on the crank mechanism, but also on the cylinder-piston group. If a spark appears after the piston passes the top dead center, then the energy generated from the combustion of the mixture enters the exhaust without performing any useful work. In this situation they say that the ignition is late.

The ignition system consists of the following elements: 1 - spark plugs; 2 — ignition distributor; 3 - capacitor; 4 — breaker cam; 5 - ignition coil; 6 — mounting block; 7 - ignition relay; 8 — ignition switch; A - to terminal “30” of the generator

Required Tools

To adjust the ignition of the VAZ 2107 you will need:

key to 13;
screwdriver;
spark plug key;
special key for crankshaft;
vol (12V lamp).

Installation of electronic ignition on video for classic VAZ 2101-2107 cars.

This video covers all the nuances.

How to adjust contactless ignition

Before setting the ignition on VAZ 2101-2107 cars, you need to warm up the engine a little, without letting it stall.

You can adjust either by ear or using a special device called a strobe to set the ignition.

A strobe light is a device with which even a beginner can set the ignition correctly. For more information on setting up the ignition with a strobe, watch the video.

What is electronic or contactless ignition?

The electronic or contactless ignition system is a more advanced version of the SZ for cars. The block of such a device is assembled from electronic elements. Contactless ignition on a VAZ is called that way, because in this case the circuit is closed and opened thanks to an electronic switch. The latter, in turn, operates from a transistor, and not from a distributor contact, as was before.

The electronic ignition circuit on a VAZ has minor differences depending on the type of engine - injector or carburetor. In any case, this option is in practice more modern, as a result of which its popularity among our compatriots is growing. Due to differences in the connection diagram and some differences for the injector and carburetor, some car owners believe that the BSZ and the electronic system are different components, but this is not so.

BSZ scheme for the domestic “seven”

How to install electronic (contactless) ignition

The sequence of installation of electronic ignition components is not particularly important. We can advise you to start by replacing the distributor:

disconnect high-voltage wires;
remove the distributor cover;
rotating the crankshaft, set the slider perpendicular to the engine axis so that it is easy to repeat when installing a new distributor and mark the position of the middle mark of the distributor scale (these actions will facilitate subsequent adjustment of the electronic ignition);
unscrew the nut securing the distributor and dismantle it;
install a non-contact sensor-distributor instead of the old distributor, placing the slider and housing in positions corresponding to the previously applied marks;
put on the distributor cover;
install high-voltage wires.

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Then the coil should be replaced. The operation is simple, but you need to take into account the position of contacts “B” and “K”. If it is different on the new coil, you need to rotate it relative to the fasteners so that the contacts are positioned similarly to the old one.

The last thing to install is the switch. It is better to place it between the headlight and the washer reservoir. You can secure the switch using self-tapping screws, under one of which you can bring out the “zero” wire. The radiator of the device must be leaning against the body.

After installing the kit, you must carefully check the quality of the electrical connections and compliance of the connections with the circuit diagram.

After completing the installation of the ignition units, you can connect the ground wire to the battery and start the engine.

Why is it worth installing on “Seven”?

There are several reasons why you should install electronic ignition on a VAZ 2107.

Of course, it is important whether the engine is equipped with a carburetor or an injector, because the injection system does not have a distributor:

If you install such an SZ, the car owner will no longer need to periodically service the contact group. That is, you can forget about oxidation and cleaning of contacts, as well as adjusting the gap.
This VAZ 2107 ignition system is more reliable, since the contact group, which is most susceptible to breakdowns and wear, is simply absent.
In this case, the spark will be distributed more evenly and stably throughout the engine cylinders, and this will not be affected by the performance of the power unit.
The service life of the distributor as a whole increases as a result of the disappearance of vibration and shock of the axle in the case of the action of the so-called cams on the contacts.
If the VAZ ignition timing is set and the system is configured correctly, and the engine operates in normal mode, there is a chance of saving gasoline. During normal operation of the internal combustion engine, its power can also be increased, especially since as a result of complete combustion of the mixture in the engine cylinders, there will be fewer harmful emissions.
It will be easier to start the engine in cold weather, since the voltage level at the spark plugs will always be stable:

Installation Guide

How to install BSZ with your own hands on the “seven”? How to properly set and adjust the device? First you need to prepare everything you might need.

Tools and materials

To complete this task you will need:

a set of keys;
self-tapping screws;
screwdriver set;
construction drill.

Stages

Installation of electronic ignition must be carried out on a de-energized on-board network, otherwise a short circuit may occur in the system.

So disconnect the battery and then follow these steps:

Disconnect all high-voltage wires from the spark plugs.
Dismantle the distributor cover.
After this, by rotating the crankshaft, it is necessary to set the slider to a position perpendicular to the axis of the power unit. Also mark the location on the middle mark of the distribution element scale, this will allow you to make adjustments without any problems in the future.
The distributor fixing nut must be unscrewed, after which the device is dismantled.
A non-contact regulator is installed instead of the dismantled distributor, while the slider and housing must be placed in the desired position in accordance with the previously established marks.
The device cover is installed.
Then you need to connect the high-voltage cables with the spark plugs.
After completing these steps, you can replace the coil. In general, this task is quite simple, but when performing it, you should take into account the position of contacts B and K. If they are different on the new short circuit, then the element should be rotated relative to the fastener so that the contacts are located similar to the one that was installed previously.
At the final stage of installation, the switch is installed; the best option would be to place it between the washer expansion tank and the headlight. The mechanism is fixed using self-tapping screws, and the so-called zero wiring should be brought out under one of them. As for the radiator, it should be leaned against the body.

Instructions for installing a contactless system on the seven

Manipulations for converting the ignition system on a VAZ 2107 from contact to contactless are carried out according to the following principle:

First, you should turn off the power to the car by disconnecting the minus terminal from the battery.
Disconnect the armor wires from the spark plugs.
The spark plugs are unscrewed, after which the crankshaft should be turned with a key set to “36”. This is done in order to set the piston of the 1st cylinder to TDC. To determine that the piston has reached top dead center, use a screwdriver. The notch on the crankshaft pulley must be on the cylinder block.
The steel latches of the switchgear cover must be snapped off and then removed along with the wires.
A mark must be placed on the engine valve cover next to the moving contact of the slider.
All wires are disconnected from the distributor along with a thin tube connecting the device to the carburetor fitting.
Using a wrench, you need to loosen and unscrew the nut, which is used to press the distributor skirt to the BC.
The old distributor must be removed, and at the same time pay attention to the gasket so as not to lose it.
The wires from the coil are disconnected, remembering their locations. The coil mount is unscrewed and the device is dismantled.
The next step is to install the mounting block.
Make holes to secure the switch.
The cover is removed from the new distributor and the gasket is installed. The distributor must be placed in the mounting hole of the cylinder block, and this should be done so that the moving contact is located at the level with the top dead center, which is drawn on the valve cover (the slider should point in the same direction as on the old distributor).
The distributor skirt is fixed.
The coil is placed in place of the old device, and terminals with wires from the ignition switch, as well as the tachometer and switch are connected to it.
The wire from the EB of the first contact must be connected to the coil terminal marked “K”.
The wire from the fourth contact is connected to terminal “B”.
The spark plugs are screwed into place, after which the armored wires and the wire suitable for the coil can be connected.
At the final stage, all that remains is to attach the vacuum tube and proceed to the stage of adjusting the ignition.

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At this point, the installation of electronic ignition on the VAZ 2107 is completed, and before testing the device, you will need to make preliminary adjustments.

Distributor

The sequence of work that must be performed in order to install a set of new parts on a VAZ 2107 does not make much difference. Therefore, we can start by replacing the distributor. Remove the distributor cover to access the slider. To simplify the task of further adjusting the BSZ, you should immediately perform some preparatory measures: installing the distributor slider in a position that will be easy to repeat when installing a new distributor; mark on the block opposite the middle mark on the distributor scale, which is used to adjust the ignition.

Using a 13mm wrench, completely unscrew the nut securing the distributor and then remove it. Disconnect the high voltage wire connecting the ignition coil and the distributor. We install a new non-contact sensor distributor, and you need to set the slider so that it matches the position of the old one. The body of the new distributor needs to be aligned according to the marks, the middle one opposite the one previously left on the engine body. We put on the distributor cover and a set of high voltage wires.

Coil

Next, you need to replace the ignition coil. Using a size 8 wrench, unscrew the nuts securing the wires to the coil contacts. Using a 10mm wrench, unscrew the mount of the coil to the body. Installing a new coil requires special attention - you should take into account the possible discrepancy between the locations of contacts “B” and “K”. For convenience, you can rotate the new electronic coil relative to the fastener, thereby placing the contacts in the same way as on the old one.

Having secured the coil, we connect old wires to its contacts (usually one blue, the other brown), and new ones, with connectors for connecting to the distributor and switch. They usually have the same colors as the standard ones. Typically, in a VAZ 2107, brown wires are connected to contact “K”, and blue wires are connected to “B”. It remains to connect the high-voltage wire that connects the coil and the distributor.

Switch

The last element in the circuit, the presence of which is required by a contactless electronic ignition system, is a switch. The ideal place in which it can be installed in a VAZ 2107 is between the washer reservoir and the left headlight. There is a flat area on which we will install the switch, with the radiator facing the body. Having leaned the switch, we mark the places for drilling holes in the body, through which we fasten it with self-tapping screws; in this case, you need to screw the black (neutral) wire from the connection block under one of the screws.

After completing all the work described above, you should once again carefully check the connection of the wires according to the circuit diagram. If everything is done correctly, you can try to start the engine. Usually there are no problems with this; all that remains is to adjust the ignition to ensure the most efficient operation of the engine.

Checking correct ignition

After completing the steps, it is necessary to check the operation of the ignition system.

To do this you need:

start the car and drive off;
Accelerate the car to 50 kilometers per hour, engage fourth gear and sharply press the accelerator pedal. Then, engine detonation will appear, which will decrease (and then disappear altogether) as the speed of the car increases.

There can be two types of problems:

Engine detonation occurred, but did not disappear as the vehicle speed increased (it is assumed that the ignition was turned on earlier ). In this situation, the switchgear must be turned half or one division to the right.
Detonation did not occur at all - ignition was delayed . To eliminate this problem, you need to turn the switchgear half or one division to the left .

As you can see, setting the ignition on the VAZ 2101 is quite simple. However, if difficulties or additional questions arise, it is better to contact certified car services for advice.

Adjustment features

As for how to set the installed ignition unit on the “seven”, then, of course, this procedure is best carried out using special equipment. But since such installations can only be found in car repair shops, the adjustment procedure can be done by ear. Before you begin the process, you need to make sure that both the carburetor and the pump are operating normally. The process itself is performed as follows:

First the engine warms up.
Then the distributor fixing nut is unscrewed.
The distributor itself should be slowly turned in different directions, while the motor should be running. The mechanism is turned until the operation of the internal combustion engine is smooth and the speed increases.
After this, the fixing nut needs to be tightened.
As for checking, to do this, you need to accelerate the car at third speed to about 50 km/h, then engage fourth gear and press the gas pedal. In this case, the sound of “fingers” or detonation should be heard from under the hood, which will last until the car’s speed increases by 5 km/h. If the sound continues longer, the distributor should be released and turned clockwise by about one degree. If you are unable to adjust the ignition yourself in this way, it is better to seek help from specialists - this procedure is inexpensive, but you will be sure that the engine will work normally.

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How to make adjustments

This process involves setting the ignition angle to the initial state. At VAZ this should be done as follows:

The crankshaft pulley is installed.
The distributor is installed.
We start and warm up at a temperature that must be considered working.
We try to start with a hot engine. If you perform this procedure at an early stage, the starter will not turn as it should.

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After the VAZ 2107 contactless ignition has been installed, you should perform a test drive. In this case, it is recommended to pick up a speed of 30-40 kilometers per hour, and then engage the “fourth” gear. As soon as the gear has been engaged, it is necessary to give as much gas as possible. If the contactless ignition kit has been installed correctly, the driver will hear a small ringing sound after a few seconds. After this, the engine will begin to work as necessary, gradually gaining momentum. In the same case, if the ringing continues for more than three seconds, then you need to advance the ignition by turning the distributor. If there is no sound, this can be done a little earlier by turning the distributor.