Setting the ignition timing (ignition timing) on ​​engines of VAZ 2101, 2102, 2103, 2104, 2105, 2106, 2107, 2121 cars and their modifications

How to set the ignition on a VAZ 2107? Carburetor.

If you have recently purchased a VAZ 2107, which has a carburetor power system, then we advise you to immediately start monitoring its condition.
This is necessary so that if any changes occur in its operation, you can make the required repairs in a timely manner. If you notice that your car's fuel consumption has increased, and the engine is constantly malfunctioning, then it's time to start tuning the ignition. In this article we will tell you how to set the ignition on a VAZ 2107 carburetor.

About installing the ignition switch

The ignition switch is also part of the engine ignition system design. Sometimes the contact group or mechanical part wears out. It would not be amiss to consider how to install the ignition switch on a VAZ-2106.

Before installing the element, it must be removed. To do this, disconnect the negative terminal from the battery, then remove the decorative trims on the steering column. Next, it is important to sketch or write down where the wires are connected. After this, use a Phillips screwdriver to unscrew the lower fasteners of the ignition switch. Next, insert the key into the lock and turn it to the zero position to disable the steering wheel locking mechanism. With a thin awl, press the latch, due to which the lock can be held in place. If you pull the key, the lock can be removed.

After the lock mechanism is removed, a new lock is installed in the same manner in the reverse order.

Setting the ignition timing with advance

This setup is completely easy to do. Even a beginner can cope with this task. To do this, prepare a 13 mm wrench and a special 38 mm crankshaft wrench in advance. If your car is running, be sure to turn off the engine, since you can only turn on the ignition when the engine is turned off. First, the piston of the first cylinder is installed at the top dead center of the compression stroke, that is, in the ignition position. Before doing this, remove the candles and plug their holes with cotton wool or some other material. You need to align the mark on the crankshaft and the front engine cover. To do this, use a wrench to start turning the crankshaft clockwise. During this action, the air compressed there should push out the cotton wool, thereby indicating the compression stroke. Continue turning the shaft slowly until the marks on the timing belt pulley and cover line up.

Please note that there are 3 marks on the cover:

• The first indicates ignition advance by 10º;
• the second – by 5 º;
• the third is equal to zero.

Since a VAZ 2107 engine with a carburetor runs on 92 or 95 gasoline, we need to set the ignition for these types of fuel. That is why you should select the second mark, which will indicate an ignition advance of 5º. Once the required parameters match, put the spark plugs in place and remove the wires. The system is ready for use.

Detailed guide to setting up the ignition

Motorists have long been convinced of the advantages, which are devoid of the disadvantages of a contact one, for example, there is no need to adjust the gap in the contact group. In this article we will look at how to adjust 2106 for the 1st cylinder.

There are marks and castings on the cylinder head cover and crankshaft pulley.

Using the marks you can adjust the ignition timing:

• the first mark, located clockwise, means that the ignition timing is 10°;
• the middle mark is designed to set the lead angle to 5°;
• the shortest, last mark sets the advance angle to 0°: in this case, the mixture will ignite when the piston reaches top dead center.

The marks are aligned by rotating the crankshaft, either by a ratchet, or by using a special wrench on the nut.

Tools and materials

In order to adjust the ignition on a VAZ 2106, you need to prepare the following tools:

• key for unscrewing spark plugs;
• special key for rotating the crankshaft;
• key to "13";
• control device: 12 V indicator light or voltmeter.

You can also expose using a stroboscope.

Stages

The ignition is set step by step:

We have set the ignition, now we need to check whether the setting is correct by following these steps:

1. The check can be performed while the machine is moving. First you should warm up the engine and then accelerate it to a speed of 40-50 km/h. Upon reaching this speed, switch to fourth speed and drive for some distance without accelerating.
2. Then you need to sharply press the gas pedal. 2-3 seconds after this, detonation and sounds resembling finger snapping should appear. The sounds should stop as the vehicle accelerates after approximately 5 km.
3. If detonation does not occur, it is necessary to adjust the position of the distributor. The reason may be “early” ignition. If detonation does not occur, then the reason may be “late” ignition. If “early”, you need to turn the distributor to the right one degree. When “late” - one degree to the left. The procedure should be performed until detonation lasts 1-1.5 seconds.
4. Having completed the adjustment, you need to put a dash on the distributor with paint showing the position of the mark with an average length in relation to the cylinder block.
5. Next, you need to install the distributor correctly. First, you should again use the unscrewed spark plug and close the hole with your finger to set the first cylinder to TDC.
6. Next, you need to align the mark on the crankshaft with the mark on the timing cover. To do this, turn the crankshaft clockwise.
7. After removing the cover from the distributor, you need to install the slider. Its position should coincide with the imaginary straight line from the contact on the cover of the first cylinder.
8. After all the steps, we put the distributor housing in place. This completes the ignition setup on the VAZ 2106.

There are main symptoms by which one can judge that it is necessary to set the ignition on the VAZ 2106:

1. Fuel consumption is too high. With late ignition, the dynamics of the car decreases. In order for the car to accelerate as before, it needs more fuel-air mixture.
2. Dynamics is lost: with late ignition, the mixture ignites after the piston has already moved down due to the inertia of the flywheel.
3. Popping sounds in the muffler. In this case, the explosion follows, and it takes some time for the gases to expand. When the piston reaches bottom dead center, the next stroke will be the exhaust stroke. In this case, part of the fuel explosion will escape into the exhaust pipe, which is the cause of the popping noise.
4. Increased engine noise. If the engine noticeably rattles or detonates, you need to turn on the ignition. In this case, the piston only goes up, and the ignition goes towards it. This makes the engine run rough with unpleasant sounds when running.

23

While operating a VAZ 2106 car, the car owner may encounter difficulty starting the engine and interruptions in the operation of the power unit. The cause of such malfunctions is incorrectly set ignition timing, which requires timely adjustment. This kind of work is not particularly difficult, so even those car owners who have little idea about repairing their car can handle it. In this article we will tell you how to set the ignition on a VAZ 2106.

Adjusting the ignition timing

For subsequent actions, use a 13 key to loosen the fastening nut of the distributor (ignition distributor). Connect one wire from the light bulb (it will act as a voltmeter, that is, indicate the presence of voltage) to the low-voltage terminal that the coil has, the second to ground. Now turn on the ignition. Slowly and carefully rotate the distributor body clockwise, stopping immediately when the light goes out. The sparks that appear will indicate the moment of ignition. Move the distributor counterclockwise until the contacts are disconnected and the lamp lights up again. Everything is in order, you can safely tighten the distributor, the setup is complete.

Installation of electronic ignition

Electronic ignition makes engine operation smoother and softer, makes it easier to start in the winter, and reduces fuel consumption. If you, having a carburetor engine, decide to switch to contactless (electronic) ignition, we will tell you how to install it correctly on a VAZ 2107 car. An electronic system for a car with a carburetor should not be too expensive or cheap. It is best to opt for a product in the mid-price category, so that later you don’t have to change anything after a while. Before work, prepare a drill and a set of keys. For an overview, first read the included instructions carefully and open the carburetor type engine kit. It includes:

• ignition coil;
• distributor;
• switch;
• 4 candles;
• connecting and high-voltage wires.

The system is easy to install. First of all, remove the negative terminal from the battery and turn the crankshaft until marks numbered 3 and 4 align, that is, the highest dead center.

Now you can begin the main steps. The coil should be disconnected from all wires, remove it and install a new one. The coil can now be connected to the central high voltage wire. Connect 2 brown wires to contact “K”, and 2 blue wires to contact “B”. Now remove the distributor cover. Please note that the slider must be set exactly as shown in the picture. Mark this place with a marker on the block to correctly install the new distributor. Now you can unscrew this part and put it to the side. After opening the cover of the new distributor, place the slider perpendicular to the engine and insert it into the hole in the cylinder block. Align it with the mark on the block. Next, put on the cover and connect the wires. Decide where the switch will be located, since there is no space for it in the VAZ 2107 car. We recommend installing it next to the washer reservoir. Secure it with self-tapping screws and install the connector. Don't forget the candles. To replace them on a VAZ 2107 car, you will need a spark plug wrench, which you should use to unscrew the old spark plugs from the cylinders and put new ones in place. Their color can say a lot about the engine's performance, so if the spark plugs have black carbon deposits, the air filter should be replaced. Normally, candles should have a light brown color.

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Adjusting the electronic ignition of the VAZ 2106

Also, the repair kit for the nine starting system contains replaceable clutch gears. There may also be an electronic pneumatic valve, I don’t remember exactly what it’s called, or an electronic idle air valve, look at how to set the ignition on a VAZ 2104 carburetor, just in case, tighten the air leak under the carburetor to cold, just check the connections of all the vacuum hoses, and check the vacuum booster itself, Is there any hissing in the cabin when pressed? This is, of course, not fatal. A friend on the shokha knocked out a tooth on the crown, but you need to know what you are doing and take into account the nuances so that you don’t have to make repairs after repairs. Ignition adjustment on VAZ 2105, 2106, 2107

The opening of the casing also allows you to lay the wires of other electricity consumers in it, the kind of all-hands masters that every yard or every garage cooperative was once famous for. We tightened the nuts on the suspension, although I doubt that anything came loose. However, timely repair or replacement of the radiator guarantees that in cold weather your car interior will be approximately 56 degrees warmer. Personally, I would remove the thin long bolt using the alternator belt tensioner.

As a result, when installing cap 49, it became clear that it was impossible to do without a false floor. Go to Ladaimage and download the parts catalog. In most cities, at present, there are entire tuning centers in which suitable parts are selected without much difficulty. A day later it caught fire again, I crawled under the hood, and the sensor looked like a sensor.

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We set and adjust the ignition timing of the VAZ 2105

The VAZ 2105 engine was installed on the model of the same name, and in addition, on bodies 2107, 2104 and on some export versions of Zhiguli in older bodies. It differed from the old 1.1 or 1.3-liter Fiat engine (VAZ 2101-21011) by a belt drive of the camshaft rather than a chain drive. Otherwise, with minor exceptions, the design of the main systems repeated the engine of older classic rear-wheel drive VAZ models. Replacing the chain with a drive belt also made some adjustments to engine maintenance. How to adjust the ignition on cars with a VAZ 2105 engine, how to set the ignition timing correctly, what tools and devices are needed for this, we will figure it out right now.

Ignition VAZ 2105: signs of malfunction, device

Initially, VAZ 2105 cars from 1980 had a classic contact ignition system installed until 1989. Later it was replaced with a contactless one, but the principle of operation of the system remained the same. The stability of the system affects not only the starting, efficiency and power of the engine, but also the nature of its operation. Incorrectly set or disabled ignition, more precisely, the moment of spark formation in the combustion chamber, can lead to engine detonation, and this is a direct threat of destruction of both the cylinder-piston group and other elements of the power unit.

Schematic diagram of the VAZ 2105 contact type ignition system

The ignition of the VAZ 2105 consists of basic elements, each of which is subject to its own problems:

1. Distributor, breaker-distributor (2) . In any ignition system, it performs the function of not only distributing voltage between the cylinder spark plugs in a certain sequence (1-3-4-2), but is also responsible for the timely supply of an impulse to the ignition coil using contact group 4 , which in turn generates a high current voltage to form a spark at the spark plug electrodes.
2. Ignition coil (5 ). VAZ 2105 cars use an oil-filled open-type coil B-117 . Its task is to convert 12 V current into high voltage current (about 12-24 kV) according to a signal from the switch 6 .
3. Switch 6 is a semiconductor circuit board for controlling the ignition system. After supplying a control pulse from the ignition relay 7 , the switch closes the circuit of the secondary winding of coil 5, activating the step-up transformer.
4. The system is activated using the ignition switch contact group 8 .

Terminology

Ignition distributor

- an electromechanical device that ensures timely supply of high voltage pulses to the spark plugs.
It is often called a distributor
.

Ignition advance

- ignition of the working mixture in the cylinder before the compression stroke ends.

Ignition timing (IDA)

— the angle of rotation of the engine crankshaft from the position corresponding to the appearance of a spark on the spark plug until the piston reaches top dead center.

Contact ignition system

- a system in which switching of the ignition coil is provided by a mechanical interrupter.

Contactless ignition system

- a system in which switching of the ignition coil is provided by an electronic module controlled by an electronic crankshaft position sensor - for example, a Hall sensor (VAZ-2108) or magnetoelectric (GAZ-2410).

Breaker

ignition system - a mechanical switch in the distributor, directly connected to the primary circuit of the ignition coil.

Runner

- a distributor element that alternately transmits high voltage from the ignition coil to high-voltage wires connected to the engine spark plugs.

Angle of closed state of contacts (UZSK)

- a value indicating how long the contacts of a mechanical breaker should remain closed. For classic Zhiguli cars, the UZSK is approximately 55 degrees. A correctly selected UZSK gives the ignition coil the opportunity to gain the necessary energy and completely transfer it to the spark plugs.

Adjustment data and ignition ratings for VAZ 2105

To adjust the ignition system, it is imperative to know several parameters that relate to the settings and nominal factory values ​​for system elements and their interaction:

1. For the contactless ignition system, spark plugs A17DV-10 or their analogues are used. The gap between the spark plug electrodes should be within 0.8 mm , and for A17DV spark plugs (for contact ignition) the gap is 0.6 mm .

   
   Standard spark plug VAZ 2105

2. Brands of switches for ignition VAZ 2105 - 3620.3734, HIM-52, VAT10.2 or PZE4020. The commutator must supply a pulse to the coil within 9 Amp.

   
   

3. Distributor for contact ignition system brand 30.3706, gap between contacts with completely open plates is from 0.35 to 0.45 mm , adjustable using a feeler gauge. For contactless ignition of the VAZ 2105, a 37/38.3706 distributor is used, which does not require gap adjustment.

4. The ignition timing on VAZ 2105 engines is 3-5 degrees .

Knowing these ratings and adjustment data, we can easily set up the ignition system of the VAZ 2105 and set the ignition timing accurately and quickly. To make adjustments, we will need either a strobe light or a 12 V test lamp, or we can do without them and set the ignition according to the marks on the front crankshaft cover and the crankshaft pulley.

Step-by-step instruction

To install electronic ignition, proceed as follows.

1. Turn the crankshaft with a crank or wrench until the mark on the shaft pulley aligns with the long mark on the cylinder block. When these marks are aligned in the first or fourth cylinder, the piston is in the TDC position. This can be easily checked by unscrewing the spark plugs and removing the distributor cover. The slider will point to either the 1st or 4th cylinder (you need to navigate by the cover on which the cylinder numbers are marked).
2. Remove the vacuum tube from the fitting, pull out the high-voltage wires from the distributor cover, unscrew the nut securing the distributor and remove it, having previously noted the position of the slider. During this operation, make sure that the gasket located between the ignition distributor and the cylinder block is not lost. By the way, it is also recommended to replace high-voltage wires with new ones when installing electronic ignition.
3. Take a new distributor, put a gasket on it and turn the shaft so that the slider is in the same position as on the old distributor. Install it onto the cylinder block and lightly tighten the fastening nut. Put on the cover, insert high voltage wires, connect them to the spark plugs. Connection diagram according to cylinder numbers - 1-3-4-2. Connect the vacuum tube.
4. Remove the old high voltage coil, install a new one in its place and connect the wires. By default, install parts purchased in one set. It comes with instructions and the wires are labeled. Otherwise, when dismantling, you should remember which of the wires was attached to the positive contact of the old coil.

1. Install the switch. VAZ models produced in recent years have a special place for it on the left side of the body (look as the car moves), next to the distributor. In older machines, you will have to carefully drill 2 holes and secure the switch with self-tapping screws. Connect the connector.
2. After installation, adjustment of the ignition timing is required. Ideally, this is done using a strobe light, but at first the adjustment can be done “by ear”. To do this, start the engine, let it run for half a minute, and then, by carefully rotating the distributor by the body in different directions at an angle of no more than 15°, achieve stable engine operation at idle. Tighten the distributor fastening nut.

After installing a new ignition on the VAZ 2106, it is necessary to clean the spark plugs and adjust the gap between the electrodes. The gap size can be in the range of 0.8-0.9 mm.

The condition for quick engine starting and uninterrupted operation is that the ignition is set correctly. Due to its incorrect installation, it can happen, and its result will be serious consequences and. Experienced drivers set the ignition by eye, others use a strobe light, and beginners usually turn to a car service center. However, if the result is good, the move itself does not matter.

How to set the ignition of a VAZ 2105 correctly

The first signs of problems with ignition on a VAZ 2105 are clear - these are, first of all, poor engine starting, high fuel consumption, loss of power, pops in the carburetor or muffler, as well as failures when changing speed, accelerating or starting off. In the worst case, detonation or complete failure to start the engine, both cold and hot, may occur.

As we have already found out, the ignition timing should be within 3-5 degrees on the compression stroke. It remains to figure out how to determine the compression stroke in the first or any other cylinder. Since the marks on the pulley and on the front crankshaft cover correspond to TDC (top dead center) in the first cylinder, we will not argue with him and will find out how to determine the compression stroke in the first cylinder.

Ignition installation marks

To do this, look at the photo above and see three marks on the cover opposite mark 4 on the crankshaft pulley. Mark 3, the largest, corresponds to top dead center in the first cylinder . Marks 1 and 2 correspond to ignition timing angles of 10 and 5 degrees , respectively. At the same time, remember that the crankshaft rotates clockwise. Consequently, we have already found TDC and the angle itself; all that remains is to position the piston in the first cylinder precisely on the compression stroke.

To do this, unscrew the spark plug from the first cylinder, and instead put a paper plug in the hole or simply cover it with your thumb. Using a 38mm socket or a special wrench for the crankshaft nut, we rotate it clockwise until the plug pops out or our finger is pushed out by air pressure. Ready. All that remains is to accurately align the marks on the pulley with mark 2 on the cover.

Checking the position of the slider under the distributor cover

Now open the distributor cover and check the position of the slider. It should be directed towards the contact connector on the distributor cover for the first cylinder. If this is not the case, rearrange the slider. After this, we set the exact ignition timing.

Using a 13mm wrench, unscrew the distributor mount and turn it a few degrees until the contacts in the contact group close. At this moment, a spark should jump on the first cylinder. To determine this moment more accurately, we connect the test lamp with a minus to ground, and a plus to the low-voltage terminal from the distributor. By rotating the distributor, we calculate the moment when the lamp lights up, naturally, with the ignition on. Close the distributor cover and start the engine.

If necessary, adjust the gap between the contacts with an adjusting screw and control it with a feeler gauge 0.35-0.45 mm

If we have a strobe light at hand, we don’t need to disassemble anything. To check the ignition timing on a VAZ 2105, it is enough to connect the strobe with one high-voltage wire to the terminal on the first cylinder from the distributor cover, and then connect the standard high-voltage wire to the tee of the device. We connect the low-voltage wire to the output from the distributor or to the coil, and the strobe power wires to the battery. Depending on the design of the strobe, the connection diagram to the battery may differ.

When and why do you need to adjust the ignition?

First, a little theory. If the working mixture in the cylinders burned instantly, then there would be no problems with advance in principle. Set it on fire at top dead center and everything is fine. But the mixture does not burn instantly: it takes milliseconds. In this case, the actual rotation speed of the crankshaft is, of course, not constant. Therefore, you cannot stupidly ignite the mixture at the same time under different engine operating modes: it will burn either too early or too late. The result will always be disappointing - the engine pulls poorly, overheats, runs unstably, detonates, etc.

In particular, if you start “sparking” too early ( large

), then the gas pressure will increase sharply until the piston reaches top dead center, preventing its movement.
Because of this, power will decrease and efficiency will deteriorate, it will lose throttle response and will twitch at low speeds. With late sparking ( low CV
), the mixture will burn for a long time with an expanding volume, and therefore the gas pressure will be significantly lower than the calculated one. Power and efficiency will decrease, and the engine will greatly decrease, since the mixture will burn out throughout the entire expansion stroke.

There is only one treatment method - ignite the working mixture according to the speed and load on the engine. In addition, adjustments to the SOP may be required when switching to. By the way, on very ancient cars (at the beginning of the last century), the ignition timing was regulated by the driver: a special handle was provided. But it soon disappeared, because the engine acquired a distributor with a centrifugal mechanism inside.

The centrifugal regulator usually contained a pair of weights balanced by springs. As the rotation speed increased, the weights diverged to the sides and rotated the support plate on which the breaker was located. The higher the rotation speed, the more the weights diverge and the higher the SOP becomes.

The further pursuit of efficiency added a vacuum colleague to the centrifugal regulator as assistants. The fact is that as the load increases, the filling of the cylinders with the combustible mixture also increases, since the driver puts more pressure on the accelerator. At the same time, the percentage of residual gases in the working mixture decreases, which helps to increase the combustion rate. Therefore, the SOP must be reduced.

On the contrary, when the load on the engine decreases, the filling of the cylinders decreases, the content of residual gases increases, and therefore the working mixture will burn more slowly. In this case, the OZ needs to be increased. This problem is solved by a vacuum regulator that monitors the vacuum in the engine intake pipe. The higher the load, the lower the vacuum, and vice versa. In most classic engines, centrifugal and vacuum regulators work together.

If you have questions, ask!

Let's consider setting the ignition timing (ignition timing) on ​​“classic” VAZ 2101, 2102, 2103, 2104, 2105, 2106, 2107, 2121 cars with a contact ignition system and their modifications.
The need to set the ignition timing may arise after removing and installing the ignition distributor (distributor), or when trying to more optimally configure engine operation. Incorrectly set ignition timing threatens to cause a number of problems in engine operation. Here are some of them: a drop in power and throttle response, increased fuel consumption, unstable idling, problems with starting the engine, shots and pops in the muffler, black smoke from the muffler, burning out valves, etc. Necessary tools
All work on setting the ignition timing on cars VAZ 2101-2107 can be carried out without the use of any special devices or devices. Using a strobe light or a warning lamp does not make much sense, since after setting the ignition timing, you will need to check its correctness on a moving car. The only tools you will need are:

— Open-end or socket wrench 13 mm.

— Open-end or special wrench 38 mm.

Preparatory work

— Put the car on the handbrake;

Setting the ignition timing on VAZ 2101-2107 cars

We set the ignition timing for 92nd gasoline.

1. Combine the mark on the crankshaft pulley and the mark on the front engine cover (the middle of the three available there).

To do this, use a special wrench (or a 38 mm open-end wrench) to slowly rotate the crankshaft by the ratchet until they coincide.

2. Install the distributor with latches parallel to the engine, the contact of the slider should look at the 4th cylinder (identify by the distributor cover).

The breaker contacts must be closed. Lightly press the distributor body with the holder.

3. Turn on the ignition and slowly turn the distributor housing until the breaker contacts open. A spark will jump between the contacts.

This will be the desired ignition timing. Use a 13 mm wrench to tighten the distributor holder nut.

Checking the correct ignition timing

When driving a car at a speed of 45-50 km/h in 4th gear on a flat road, sharply, for a short time, press the gas pedal. At the same time, listen to the engine. A short-term detonation - 1-3 seconds (knock of “fingers”) indicates the correct setting of the ignition timing, a long-term detonation - no detonation. It is necessary to adjust the advance angle by rotating the distributor (counterclockwise - we make the ignition earlier, clockwise - later). Then check again.

Notes and additions

— There are situations when, with a correctly set ignition timing (short detonation when driving), on VAZ 2101-2107 vehicles, engine idle leaves much to be desired. In these cases, many simply turn the distributor, setting the ignition a little earlier to stabilize the idle speed. It is advisable to eliminate this malfunction by adjusting the carburetor, and not by rotating the distributor, since the previously established correct ignition timing is lost.

Every owner of the legendary classic VAZ 2106 model knows well all the problems associated with the operation of this car, since in most cases he eliminates them on his own. Such problems also include malfunctions of the contact (cam) ignition system of the VAZ 2106. Constantly burning contacts required cleaning and adjustment; due to play in the bearing and distributor bushing, the engine operation resembled “shaking,” especially at idle. The electronic ignition system is designed to solve all these emerging problems.

How to set the ignition

Ignition timing directly affects the performance of the vehicle. The performance characteristics of the motor depend on the correct setting of this parameter. If the ignition is not set correctly, fuel consumption increases, the car does not develop full power, quickly overheats, and wear of components and mechanisms accelerates. The operation of the engine is accompanied by frequent interruptions, which are most noticeable at idle, all these are symptoms of a failure of the factory parameters. Below we will look at how to set the ignition of the VAZ-2105 (2106, 2109).

Required tools:

• key to "13";
• spark plug key;
• control (a voltmeter or a 12-volt light bulb can be used);

You can set the ignition on the first or fourth cylinder. On our website you can see a description of the ignition installation on the first cylinder.

The short, medium and long mark on the cover
shows the ignition moment of the VAZ 2106
.

How to set the ignition of a VAZ 2106 on your own

1. Short mark with a leading angle of 10°.
2. Average - 5°.
3. Long - 0°.

The top dead center is indicated on the rim of the pulley; opposite TDC there is a special shoulder on the pulley.

Where to start setting the ignition

Before you begin directly setting up the ignition system, you need to check a number of components and mechanisms.

Spark plug . Make sure they are in good condition. If there is carbon deposits on their surface, remove it. Also, do not forget to adjust the spark plug gap.

Breaker contacts . Check the contacts; if they show signs of metal burnout or corrosion, replace them. It is not recommended to repair these segments; they do not cost much money and new ones will last much longer.

Capacitor . To check, you must use a special charge-discharge tester. The most optimal would be a pointer device; it will allow you to determine as accurately as possible the strength of the current flow, which should pass smoothly and slowly.

Ignition coil . Test the contacts with a tester, but first thoroughly clean the coil, distributor cap and distributor from dirt. If the lid has carbon deposits, it must be replaced with a new analogue.

Carburetor . Test the carburetor; if it is not in working order or minor malfunctions were discovered during the diagnostic process, it is recommended to repair it before proceeding with the ignition adjustment.

Lada 2104 › Logbook › engine tuning

we set the correct ignition angle using a strobe, and the mixture quality indicator, its operating principle is screwed in instead of a spark plug, then we adjust the carb to the color according to the ignition of the mixture. The photos are not the best, but that’s all there is + a couple of videos during the setup process, this is not the final result, but an intermediate one. by the way, don’t be alarmed by the engine shaking because it’s not secured to the cushions

To work you will need:

-ratchet key or crooked starter. - a flat-head screwdriver with a wide, powerful blade - an open-end wrench 12x13 - a set of feeler gauges - a rubber conical plug - a spark plug wrench

So, in order for the engine to work as it should, it is necessary that at the right moment, or rather some time before the piston reaches TDC, a spark is formed between the electrodes of the spark plug, which will ignite the mixture by the time the piston approaches TDC and the gas will do the work expansion will push the piston down.

In order for sparking to occur at the right moment, the ignition system uses a distributor, the basis of which is a slider and a breaker contact group. The most important adjustments in cam ignition are the gap between the breaker cams, UZSK (angle of the closed state of the contacts) and the moment of spark occurrence (ignition advance).

Before you begin installing the ignition, you must ensure the following:

1) The spark plugs are in good condition and suitable for further use. If there is oil deposits, I advise you to calcinate it. I do not recommend using even the finest sandpaper, because... On most candles, the manufacturer uses a special spray and the fine abrasive from removing carbon deposits can get in the wrong place and as a result of such cleaning, the candle can be damaged (it will begin to pierce). It is not at all necessary to heat the spark plug red, the main thing is to burn off unwanted oil deposits. Adjust the spark plug gap evenly, as described in the manual. Be sure to use a special wire probe for this.

2) Check the condition of the breaker contacts. If there are traces of metal burnout or corrosion, replace the contacts. I don't recommend repairing them. It is much cheaper to replace them and forget about them for a long time. I recommend the Beru brand.

3) Check the capacitor with a charge-discharge tester... The current should flow smoothly and slowly. It’s better to use a pointer tester for this, it’s easier to see.

4) Also make sure that the wire from the ignition coil has good contact. By the way, it wouldn’t hurt to check the coil either. You can also check it with a tester, a megometer, or as the simplest option, completely free of charge at any normal auto shop at a stand.

5) Remove dirt from the ignition coil, distributor and distributor cap. If there is carbon deposits on the distributor cap, replace it. Don't skimp, take a good factory cover.

6) Assess the condition of the carburetor. If it does not respond to adjustment, then it needs repair. But this is a separate topic for discussion.

7) Check the functionality of the vacuum ignition timing. The drive should move without jamming, the tube should be thick-walled without breaks or cracks.

So, having made sure that everything is in good working order and suitable and has been replaced with a new one, let’s proceed to the adjustment itself.

Let's consider the case if the distributor was removed entirely from the car. To install it in place, you need to find one of the 1st or 4th cylinders in which, when the marks on the crankshaft pulley and on the front cover are aligned, the compression stroke will occur. It's very easy to do. We find a conical rubber plug and insert it tightly into the spark plug hole. I always look for cylinder 4, because this is where compression occurs on a classic engine when all the timing marks are aligned. We smoothly turn the crankshaft with a special ratchet wrench or a crooked starter... once the desired cylinder is found, the rubber plug will fly out of the desired cylinder. I advise you to tie it to something, I was constantly looking for it for a long time))) Next, we exactly match the marks on the pulley and on the front cover (the longest). We insert the distributor along the slot so that the slider stands exactly perpendicular to the plane of the head and looks in its direction. Next, raise the distributor to the point where you can rotate the shaft without catching the splines and push it one tooth clockwise. This is necessary in order to give the distributor a full stroke of adjustment... otherwise you usually adjust and then the vacuum advance drive blocks access to the spark plug of the first cylinder