How to install a distributor drive on a ZMZ 402 engine

Removal and installation of the ignition distributor sensor for the ZMZ-402 engine

An ignition distributor with a built-in Hall sensor produces voltage pulses, which the commutator converts into current pulses in the primary winding of the ignition coil.
The grooves of the roller are offset relative to its axis to ensure correct installation of the distributor sensor in a certain position.

Removing the distributor sensor

Remove the distributor cover with tips and high-voltage wires.

Remove the vacuum regulator hose (Fig. 2).

Using a “7” wrench, unscrew the nut securing the low-voltage wire

Use a 10mm wrench to unscrew the octane corrector mounting bolt.

Install the distributor sensor in reverse order.

Remember that the slot in the drive shaft coupling is offset, and the sensor can only be installed in one position.

Removing the distributor assembly with the oil pump drive

Remove the distributor cover with tips and high-voltage wires.

In this position, we remember or mark the position of the slider relative to the body.

Disconnect the switch wire from the distributor

Disconnect the vacuum regulator hose.

Using a 13mm wrench, unscrew the two fastening nuts

Remove the distributor sensor assembly with the oil pump drive from the engine.

A gasket is installed under the drive.

If the position of the crankshaft remains unchanged, install the distributor sensor (slider opposite the mark) in the reverse order, after which we adjust the ignition timing (see article - Adjusting the ignition timing of the ZMZ-402 engine).

If the position of the crankshaft has changed, install the distributor sensor in the following sequence: move the piston of the first cylinder to TDC, aligning the corresponding pulley mark with the indicator protrusion on the cylinder block.

In this case, both valves of the first cylinder are closed (see the article - “Adjusting the valve clearances of the ZMZ-402 engine”).

Mark on the ZMZ-402 engine (Fig.

Mark on the UMZ-4215 engine (Fig. 9)

Using a 10mm wrench, unscrew the octane corrector screw and disconnect the distributor sensor from the drive (Fig. 10).

By turning the drive shaft by 45° (the position is shown in Fig. 11), we install the drive into the cylinder block.

The roller will return to its original position, its slot will become parallel to the longitudinal axis of the engine and will be shifted outward relative to the center of the roller (Fig. 12).

We install the distributor sensor and adjust the ignition (see the article - “Adjusting the ignition timing of the ZMZ-402 engine”).

Source

The process of adjusting the angles of thermal gaps

For those who are wondering how to adjust the valves on a car with a 402 engine, the entire process will be presented in detail below. It is important to remember that the process itself should be performed on a cold engine, since on a warm engine the combustible mixture can burn the motorist. Valve adjustment on a 402 engine is performed in the following way:

Disconnecting the hose. The first step is to disconnect all the hoses going to the valve cover, as well as the accelerator cable.
Removing the air filter and valve cover. Then you should remove the air filter with the housing, and unscrew the 6 bolts securing the valve cover.
Removing the spark plugs.
Installing the first cylinder at TDC. The next step in the adjustment process is to set the first cylinder to the top dead center (TDC) position. To do this, it is necessary that the third mark on the crankshaft pulley coincides with the mark on the engine block housing. This is done by turning the crankshaft.
Sequence of valve adjustment. The order of adjusting the valves is as follows: 1, 2, 4, 6, the next step is to turn the crankshaft one full turn clockwise until the marks coincide. Next, 3, 5, 7, 8 valves are adjusted.
Adjustment process. Using an 11-mm socket or a screwdriver, you need to hold the adjusting screw, and at this moment unscrew the nut securing it. Using a probe of the required size, take a measurement (the probe should move with little effort); if the measurement of the thermal gap is normal, then you can move on to the next valve.
Installation work. The next step is to assemble in reverse order, i.e. the spark plugs, valve cover with a new gasket are installed back, but the bolts must be tightened according to the recommended tightening torques (this indicator is 0.5-0.8 N.m (kg.m)), the air filter and hoses.
Check with the engine running. Now you should start the internal combustion engine and let it run for a while until it warms up completely, then listen to its operation. If there is no metallic ringing or dull clattering sound, this will mean that the thermal clearance adjustment has been performed correctly.

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This is the way to adjust the valves and set up the correct operation of the internal combustion engine. This procedure is suitable for all cars with a 402 engine, be it a GAZ 3110 (Volga) or a GAZelle.

Installation of the UAZ distributor drive

Installing a distributor drive on a UAZ vehicle involves combining a camshaft and an oil pump. It's not very simple.

The distributor drive is driven into rotation by the camshaft gear, at the same time, the oil pump is driven into rotation by the distributor drive through the plate. Removing the drive is not difficult; unscrew the two fastening nuts and remove it from the engine block. The drive may burn in the motor block housing. In this case, you have to use ingenuity. Or try to rock it. Or unscrew the mounting pins and try to turn it. Why does the drive fail? As a rule, this happens when starting the car in cold weather. The oil becomes very thick, and it is very difficult to turn the oil pump. Therefore, the pump will stall, causing the plate to bend. And it gets out of engagement with the oil pump.

Installation of the UAZ distributor drive

After removing the drive, the distributor drive is reinstalled. To do this, set the piston of the first cylinder to TDC at the moment of fuel compression. The easiest way to set this position is to unscrew the spark plug of the first cylinder and block the hole with a paper stopper. When bringing the piston in at the moment of compression, the plug will be knocked out, and then install the generator drive pulley at the first mark.

Correct camshaft position

I would like to note that the piston approaches the TDC position twice during the cylinder operating cycle. For the first time at the moment of compression. The second is at the moment of exhaust gas emission. It is very important not to confuse these provisions. Therefore, we check ourselves by determining the compression occurring in the cylinder. Since at the moment the valves are closed and fuel compression occurs. So, we have installed the piston at TDC. Now our task is to install the drive correctly. Pay attention to the groove into which the distributor drive coupling is inserted; it is offset from the center. This groove must have a direction parallel to the cylinder block. And relative to the center it is offset from the engine block.

Ignition installation for gazelle 402 engine video. Ignition installation 402

HomeIgnitionIgnition installation 402

Installation of the ignition system

For smooth, economical operation of the engine, the correct installation of the ignition system is of great importance.

For complete combustion of the fuel, the spark discharge in the spark plug must be before the top dead center of the cylinder piston, since time is needed for fuel combustion.

The angle of rotation of the crankshaft from the moment the spark discharge occurs to the top dead center is called the ignition timing angle.

Installation of the ignition system

To start the engine, it is enough to set the ignition at the moment the piston passes the top dead center or close to this moment. Installation of the ignition system is required when removing the distributor on VAZ vehicles and removing the distributor drive on GAZ, ZIL, AZLK, etc. vehicles.

There are two ways to install the ignition system.

The first method of installing the ignition

The first method is suitable for all engines with a contact or contactless ignition system.

To install, the spark plug of the first cylinder is unscrewed, and the hole is plugged with a finger (when installing with an assistant) or a loose plug made of paper or other material.

After this, the engine is cranked using the crank handle, or, in its absence, with the raised drive wheel when the gear is engaged. Increasing pressure in the cylinder under the finger or knocking out the plug means the piston is moving upward during the compression stroke.

After determining the compression stroke, you need to align the top dead center marks. The location of the marks is individual for each engine. For VAZ, GAZ-402 engines, the marks are located on the crankshaft pulley and the front cover; for GAZ-52, GAZ-66 engines they are located on the flywheel and flywheel housing.

Setting the ignition timing on ZMZ 402 GAZ, UAZ (contactless)

We set the ignition timing on the ZMZ 402 Volga, UAZ engine (contactless)

Installation of distributor with drive

correct installation of a distributor with a drive on a UAZ vehicle.

After setting the top dead center, you need to install the distributor in such a way that the slider is directed to the output of the first cylinder of the distributor cover. When installing the GAZ, UZMI ignition system with a non-contact distributor, you must align the mark on the distributor armature with the arrow on the stator.

If all steps are performed correctly and there are no malfunctions in other systems, the engine should start.

Second method of installing the ignition

For four-cylinder engines, it is possible not to determine the compression stroke for the first cylinder, but it must be taken into account that when setting the top dead center marks, the compression stroke can be in the first or fourth cylinder.

When installing the distributor in this case, the top dead center marks are first set, as described in the first case and the distributor is installed in place in the same way as in the first case.

If, when you try to start the engine, it does not start, then you need to unscrew the wires on the distributor cover. To do this, you need to swap the wires of the first cylinder with the fourth cylinder and, accordingly, swap the wires of the second and third cylinders.

Ignition adjustment

After starting the engine, the ignition timing must be adjusted. There are two ways to adjust, using a strobe light and by ear while moving.

When adjusting the ignition using a strobe, the moment of occurrence of a spark discharge and the alignment of the marks of the top dead center of the cylinder are controlled. Setting the ignition timing with a strobe is precise, but is designed for a reference engine and high-quality gasoline. Therefore, as practice has shown, it is better to set the ignition timing by ear while the car is moving.

For installation by ear on a straight, level road at a speed of 40 km/h. the gas pedal is pressed sharply.

When pressed sharply, a short metallic knock should be heard in the engine.

Usually in this case they say the knock of the piston pins, but in fact it is the knock of the piston skirt on the cylinder walls when the piston moves upward when fuel combustion occurs and there is excess pressure on the bottom of the piston.

If there is no knocking, ignition is later, with prolonged knocking it is early. This adjustment is recommended after each refueling, due to the discrepancy between the actual octane number and the declared one.

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Ignition installation for gazelle 402 engine video

Setting the ignition timing on the ZMZ 402 GAZ, UAZ (contactless) Setting the ignition timing on the ZMZ 402 Volga, UAZ engine... (non-contact) Distributor on the ZMZ 402 Installing the ignition distributor on the ZMZ 402 engine “on the knee” installing a distributor with a drive correct installation of a distributor with a drive on a car UAZ.

Acceleration of a gazelle to 100 after installing a contactless ignition system with a Hall sensor. Installation of a contactless ignition system with a Hall sensor. I'm pleased with the result. At the end of the video there is a link...GAZELLE Replacing the camshaft gear 4216, 402 A detailed video tutorial on replacing the timing gear on a gazelle business without removing the pan motor 4216, UMZ.

Adjusting and installing the ignition ZMZ 402: secrets and tips

The ZMZ 402 engine is one of the products of the Russian automotive industry, widely used in the automotive industry. These power units were equipped with certain models of Volga, UAZ, and Gazelle cars. To ensure normal engine operation, the machine must have the ignition set correctly. In this article we will tell you how to install a distributor on a 402 engine and what should be taken into account when performing the task.

What you need to know

In order to properly configure and adjust the ignition of the ZMZ 402, you need to know some nuances about the operation of the power unit. Such motors have a non-contact distributor installed, supplemented by a control signal generator and mounted advance regulators - vacuum and centrifugal (video author - smotri Vidik).

The distributor is designed to perform certain functions:

determines the moment of spark occurrence;
transmits high voltage signals through the cylinders of the power unit, taking into account the order of their operation.

For the correct distribution of impulses, a slider mounted on the mechanism pulley is used. The slider is equipped with a resistor and is designed to suppress interference. The switching device performs the function of opening the ignition coil winding circuit, converting control signals from the regulator into short-circuit current signals.

To correctly install the ignition on a 402 engine, it is necessary to take into account the system characteristics presented below:

the order of operation of the cylinders is first the first, then the second, then the fourth and third;
the rotor of the distribution element rotates counterclockwise;
on a centrifugal device the advance angle is from 15 to 18 degrees;
on a vacuum device this indicator is from 8 to 10 degrees;
the play on the NW should be no more than 0.8 mm;
the resistor resistance value should be from 5 to 8 kOhm;
the SZ resistance parameter should vary around 4-7 kOhm;
in the stator winding the resistance level should be no more than 0.45 and no less than 0.5 kOhm.

Disassembled distributor for ZMZ

How to set the ignition on a gazelle

The ZMZ 402 engine is one of the products of the Russian auto industry, widely used in the automotive industry. These power units were equipped with certain models of Volga, UAZ, and Gazelle cars. To ensure normal operation of the engine on the car, the ignition must be set correctly. Next we will talk about how the distributor is installed on a 402 engine and what should be taken into account when completing the task.

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In order to correctly configure and adjust the ignition of the ZMZ 402, you should know certain aspects about the operation of the unit. Such motors have a non-contact distributor installed, supplemented by a control signal generator and mounted advance regulators - vacuum and centrifugal (video creator - smotri Vidik).

The distributor is designed to perform certain functions:

determines the moment of spark occurrence;
transmits high voltage signals through the cylinders of the unit, taking into account the order of their operation.

For proper distribution of impulses, a slider mounted on the mechanism pulley is used. The slider is equipped with a resistor and is designed to suppress interference. The switching device performs the function of opening the ignition coil winding circuit, converting control signals from the regulator into short-circuit current signals.

https://www.youtube.com/watch?v=2omUOXYfM8c

To correctly install the ignition on a 402 engine, you need to take into account the properties of the accounting system set out below:

the order of operation of the cylinders is first 1st, then 2nd, later 4th and 3rd;
the rotor of the distribution element rotates counterclockwise;
on a centrifugal device the advance angle is from 15 to 18 degrees;
on a vacuum device This common rumor indicates an indicator of 8 to 10 degrees;
free play on the NW must be no more than 0.8 mm;
The resistor resistance value ranges from 5 to 8 kOhm;
the SZ resistance parameter should vary around 4-7 kOhm;
in the stator winding, the resistance level must be less than 0.45 and not even less than 0.5 kOhm.

Disassembled distributor for ZMZ

How is the ignition installed on the ZMZ 402? The crankshaft must be placed in a position that corresponds to an advance angle of 5 degrees.

The moment must be set as follows:

Gazelle camshaft gear replacement 4216, 402

On the power unit, we combine the average mark on its shaft on the cylinder head cover, in other words, at the end of the compression stroke on cylinder 1.
If the distributor has not been removed from the unit, the compression stroke on cylinder 1 can be determined by opening its cover. It is necessary that the slider be installed opposite the internal contact, which is connected by a cable to the spark plug. If compression cannot be found in this way, the SZ installed in the first cylinder is dismantled.
Later, the hole should be covered with a rag, or better yet, with paper.
The crankshaft must begin to rotate; at the moment when the cardboard plug is knocked out by the air flow, the compression stroke begins.
Now a 10mm wrench will come in handy - thanks to its use, you only need to slightly loosen the octane corrector bolt, in this case it is not necessary to unscrew the screw itself.
Next, you should set its scale to zero, this is approximately the middle of the scale.
After completing these steps, using a 10mm wrench, you need to loosen the bolt that secures the octane corrector plates.
Now you need to turn the distributor body so that the marks are aligned. Namely, we are talking about the reddish mark located on the rotor, in addition to the mark on the stator. When the installation of the device drive is completed, the distributor must be held in this position with one hand, and the bolt must be tightened with the other hand.

Set the marks. 2.4. Set the scale to zero. 3. Align the distributor marks.

They probably set the ignition with a strobe light. When setting the ignition timing, it does not produce results - the engine continues to stall and not operate at full power. The reason lies in the inoperability of the distributor as a whole. The problem can be solved by changing or repairing the distributor.

Idle floats, misfires on induction distributor ZMZ 402, UMZ 421

The ZMZ0-402 type engine is equipped with an ignition distributor sensor (1908.3706) - non-contact, with a control pulse sensor (generator) and integrated vacuum and centrifugal ignition timing regulators.

The distribution sensor performs two functions: it sets the moment of sparking and distributes high-voltage pulses among the cylinders in accordance with the order of their operation. For this purpose, a slider mounted on the shaft of the sensor-distributor is used.

A noise suppression resistor is installed in the slider.

The switch (1313734) opens the power supply circuit of the primary winding of the ignition coil, converting the sensor control pulses into current pulses in the ignition coil.

Techno feature of a complex of accounting programs ignition

How to install the ignition yourself?

How is the ignition installed on the ZMZ 402? The crankshaft must be placed in a position that corresponds to an advance angle of 5 degrees.

You need to set the moment like this:

On the power unit, we combine the average mark on its shaft on the cylinder head cover, that is, at the end of the compression stroke on cylinder 1.
If the distributor has not been removed from the power unit, the compression stroke on cylinder 1 can be detected by opening its cover. It is necessary that the slider be installed opposite the internal contact, which is connected via a cable to the spark plug. If it is not possible to determine the compression in this way, you can dismantle the SZ installed in the first cylinder. After this, the hole will need to be covered with a rag, or better yet, with paper. The crankshaft needs to start rotating, and at the moment when the paper plug is knocked out by the air flow, the compression stroke begins.
Now you will need a 10mm wrench - with its help you need to slightly loosen the octane corrector bolt, but you do not need to unscrew the screw itself.
Next, you should set its scale to zero, this is approximately the middle of the scale.
After completing these steps, using a 10mm wrench, you need to loosen the bolt that secures the octane corrector plates.
Now you need to rotate the distributor body so that the marks are aligned. In particular, we are talking about the red mark located on the rotor, as well as the risk on the stator. When the installation of the device drive is completed, the distributor must be held in this position with one hand, and the bolt must be tightened with the other hand.

How to Set the Ignition on a 402 Engine Carburetor

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26.09.2018

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Adjusting and installing the ignition ZMZ 402: secrets and tips

The ZMZ 402 engine is one of the products of the Russian auto industry, widely used in the automotive industry. These power units were equipped with certain models of Volga, UAZ, and Gazelle cars.

To ensure normal engine performance, the ignition

Next you will learn how to install the distributor on a 402 engine and what you should consider when completing the task.

In order to correctly configure and adjust the ignition of the ZMZ 402, you should know certain aspects about the operation of the unit. Such motors have a non-contact distributor installed, supplemented by a control signal generator and mounted advance regulators - vacuum and centrifugal (video creator - smotri Vidik).

The distributor is designed to perform certain functions:

determines the moment of spark occurrence;
transmits high voltage signals through the cylinders of the unit, taking into account the order of their operation.

To install the ignition

on the 402 engine, you need to take into account the properties of the accounting software (software) listed below:

How to set the ignition on a 402 engine carburetor

the order of operation of the cylinders is first 1st, then 2nd, later 4th and 3rd;
the rotor of the distribution element rotates counterclockwise;
on a centrifugal device the advance angle is from 15 to 18 degrees;
on a vacuum device } myth the indicator is from 8 to 10 degrees;
free play on the NW should not exceed 0.8 mm;
The resistor resistance value is expected to be from 5 to 8 kOhm;
the SZ resistance parameter should vary around 4-7 kOhm;
in the stator winding, the resistance level must be less than 0.45 and not even less than 0.5 kOhm.

Ignition on 402 engine

We set the distributor drive correctly. Adjusting the ignition

, video for citizens without driving skills. Everything is very simple.

Disassembled distributor for ZMZ

How to install the ignition yourself?

How is the ignition installed on the ZMZ 402? The crankshaft must be placed in a position that corresponds to an advance angle of 5 degrees.

The moment must be set as follows:

On the power unit, we combine the average mark on its shaft on the cylinder head cover, in other words, at the end of the compression stroke on cylinder 1.
If the distributor has not been removed from the unit, the compression stroke on cylinder 1 can be determined by opening its cover. It is necessary that the slider be installed opposite the internal contact, which is connected via a cable to the spark plug. If compression cannot be found in this way, the SZ installed in the first cylinder is dismantled. After this fact, the hole will need to be covered with a rag, or better yet, with paper. The crankshaft must begin to rotate; at the moment when the cardboard plug is knocked out by the air flow, the compression stroke begins.
Now a 10mm wrench will come in handy - thanks to its use, you need to slightly loosen the octane corrector bolt, but there is no need to unscrew the screw itself.
Next, you should set
its scale to zero, this is approximately the middle of the scale.
After completing these steps, using a 10mm wrench, you need to loosen the bolt that secures the octane corrector plates.
Now you need to turn the distributor body so that the marks are aligned. Namely, we are talking about a reddish mark located on the rotor, in addition to the risk on the stator. When the installation of the device drive is completed, the distributor must be held in this position with one hand, and the bolt must be tightened with the other hand.

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1. Place marks. 3.5. Set the scale to zero. 3. Align the distributor marks.

Some people set the ignition with a strobe light. From time to time, setting the ignition timing does not produce results - the engine continues to stall and not operate at full power. The reason lies in the inoperability of the distributor in general. The problem can be solved by replacing or repairing the distributor.

Adjusting the ignition timing of the ZMZ-402 engine

Page 1 of 2.4

The distribution sensor performs two functions: it sets the moment of sparking and distributes high-voltage pulses among the cylinders according to the order of their operation. For this purpose, a slider mounted on the shaft of the sensor-distributor is used.

A noise suppression resistor is installed in the slider.

The switch (1313734) opens the power supply circuit of the primary winding of the ignition coil, converting the sensor control pulses into current pulses in the ignition coil.

Techno feature of a complex of accounting programs ignition

Installation of ignition and distributor drive on the 402 UAZ ZMZ engine

In order for an engine with a 402 carburetor from a UAZ to work normally, you need to set the ignition correctly, and how to do this will be described in this article. Many novice car owners incorrectly set the marks when changing the timing belt, so our auto service often receives engines that require major repairs. This should not be allowed, since, firstly, it is costly for the owner. Secondly, such a breakdown leads to the purchase of a new engine. But this doesn't happen often.

Communities › GAZ Volga › Blog › Correct ignition adjustment of ZMZ 402.

Hi all ! I needed to set the ignition to 402. On the Internet, everyone writes differently! 1 Please tell me, STEP BY STEP! how to set the ignition correctly on 402? (electronic ignition, conventional) I will display it on the street near the house. 2 Does the distributor slider rotate clockwise or counterclockwise? 3 Trying to start the car, it turns, but does not start, and after releasing the ignition key, the crankshaft turns in the opposite direction. (late ignition?) So I decided to set the ignition again from scratch! PLEASE TELL US HOW TO DO IT WITHOUT MUCH WORRY. As soon as I start the car, I will adjust it using the strobe light.

TODAY I SET THE IGNITION! THE CAR STARTED WITH ALMOST HALF A KICK! BUT there is a question: when the slider is on the first cylinder, unscrew the rear bolt and align the marks on the distributor under the slider, BUT! the slider has free movement, I turned it clockwise all the way and aligned the marks. DID I DO IT RIGHT? OR maybe you need to turn it counterclockwise all the way?

P.S. I still have to buy a new carburetor!

Ignition system elements

The elements of ignition of fuel in the engine are dominant. Through it, the power unit is started. A couple of types of ignition systems have been developed for gasoline engines:

The elements for igniting a combustible gasoline engine are given in the list:

distributor or spark breaker. Installed to determine the moment in ignition when a spark appears and transfers high voltage to the engine cylinders. The device combines its work with the movement of pistons in the cylinders;
coil;
switch. This part extinguishes the flow of electricity to the coil winding and turns the signal from the regulator into a current signal;
candles;
lock;
starter;
resistance. Sometimes they add.

Attention! On an engine from a Gazelle or UAZ, a non-contact ignition system is used. A generator is added to it to control signals and devices to regulate advance: vacuum and centrifugal.

Experienced mechanics advise reading the characteristics given below to set the ignition correctly:

The operation of the engine cylinders is carried out in this way: one, two, four, three;
the rotor device always rotates counter-minutewise;
the centrifugal part has a lead angle of eighteen degrees;
the vacuum part has a lead angle of ten degrees;
SZ play does not exceed 0.8 mm;
R resistor does not exceed 8 kOhm;
R SZ no more than 7 kOhm;
R in the stator winding – 0.5 kOhm.

Now let's talk about how ignition of fuel in the power unit works.

How the ignition system works

The fuel mixture is ignited as follows:

The driver turns the key in the lock.
Current from the battery goes to the starter.
The crankshaft begins to rotate.
The distributor turns on.
Current flows to the coil.
It passes through the switch to the distributor.
The last device distributes the current among the spark plugs.

This ensures proper ignition in the engine. However, there are early and late arson. Then we can talk about malfunctions of the power unit.

Early ignition

Early ignition occurs before the cylinder piston approaches top dead center. Gasoline with air and oil is ignited while the piston is still moving. Such problems arise due to an incorrectly set ignition angle.

Experienced mechanics identify such a breakdown by the following signs:

the power unit does not start immediately;
unstable operation of the engine when idle at traffic lights, when the car is standing still;
the appearance of a chattering sound that does not go away when the load increases;
When disassembling the engine, mechanics discover carbon deposits on the spark plugs. This means that the fuel does not burn out completely;
increased fuel consumption;
dark smoke from the muffler pipe.

These are all signs of pre-ignition. Let's look at what happens when the ignition is slow and ignition does not occur on time.

Late ignition

If the marks are set incorrectly on 402 ZMZ engines, late ignition occurs when the piston has already passed the top point. The car owner can notice this by a drop in power with increased gasoline consumption.

Experienced mechanics notice late ignition by the following signs:

candles turn gray or white;
the engine begins to heat up very much, although the cooling system is in order;
The motor may stall when the load increases.

Correct ignition adjustment and adequate placement of marks will help to cope with the problems described above.

Procedure for adjusting the ignition system

To correctly adjust the ignition, you need not only to set the advance angles, but also to position the marks correctly. By the way, if the car owner does not understand and does not understand the design of the engine, then it is better to give this work to experienced mechanics in the service center.

Let's look at all the nuances of ignition adjustment.

Label matching

To correctly compare the marks and set the engine ignition, do the following:

Set the first cylinder to top dead center.
The crankshaft is turned so that the mark on its pulley aligns with the mark on the cylinder head.

Adjusting the ignition timing

We install the crankshaft in a position corresponding to the ignition timing angle of 5°.

To do this, on the ZMZ-402 engine (Fig. 1), we combine the middle mark on its pulley with the tide on the block cover (the end of the compression stroke of the first cylinder).

The operation of the engine, its efficiency and reliability directly depend on the correct settings of the ignition system. In this article we will look at the design and components of the ZMZ 402 ignition system, as well as the procedure for setting the ignition timing

How to install the ignition yourself

You can install the ignition yourself. For such a procedure you will need a standard set of tools. If there is a strobe, then that's good. The tool will allow you to set the correct ignition of the mixture, so as not to endlessly crawl under the hood.

And the procedure is done as follows:

Warm up the engine to 80 degrees. This is its operating temperature.
The instrument is connected to the on-board computer.
The distributor cap lock will need to be unscrewed.
The signal sensor must be placed on the high-voltage wire of the first cylinder.
If there is an engine vacuum corrector hose, it must be plugged.
Light from a strobe light is directed onto the engine crankshaft pulley.
Start the engine and leave it idling.
Rotate the distributor body.
Combine marks.
Tighten the clamp.

This completes the installation procedure.

Installation of distributor with drive

Installation of the distributor with the drive is carried out as follows (all work is carried out with the power unit running):

Turn the distributor counterclockwise.
Be prepared for the engine speed to increase.
If the car owner continues to crank the engine distributor, the power unit may stop working stably.
When the engine speed drops, you need to turn the distributor clockwise.

To test whether everything has been done correctly, it is recommended to sharply accelerate the car or, conversely, brake sharply and stand for a while. At the same time, the operation of the engine should be stable, and it should not stall.

Removing the distributor assembly with the oil pump drive

To carry out repair work on the distributor on a Gazelle or UAZ engine, you will need to remove it. This is done this way:

Remove the cover along with the wires located there.
Remove the vacuum regulator hose.
Dismantle the fastening of the low-voltage wire.
Remove the octane corrector fastenings. To do this, use a key of ten. And to dismantle the low-voltage wire, use a seven key.
Finally, remove the engine distributor itself.

This task is easy and does not require special skills to complete. However, the car owner must have an understanding of the design of the motor. Installation is carried out in reverse order. It must be remembered that the distributor can only be installed in one position.

If you need to remove the oil pump with distributor, you need to do this:

Remove the engine distributor cap. Remove high voltage wires.
Now you need to remember how the slider is located relative to the body.
Dismantle the vacuum hose and switch wire.
Unscrew the two fastening nuts. The key is used for thirteen.
Dismantle the distributor sensor and oil drive.

Remove the gasket on the engine and put in a new one if that's the problem. If the position of the engine crankshaft remains unchanged, install everything in the reverse order. If even small changes occur, then first the piston is moved to top dead center. Align the mark on the crankshaft pulley with the mark on the cylinder head. The cylinders must be closed.

Then the distributor is installed.