For the engine to work correctly in any mode, the correct adjustment of the VAZ 2107 carburetor is necessary. The device is not the simplest one, but even a non-specialist can handle its adjustment if you know the principle of operation of the systems and the algorithm of actions. VAZ 2107, like any carburetor car, is sensitive to fuel quality, therefore, from time to time, the carburetor requires correction of the throughput of the channels and clearances.
The latest model of the DAAZ 2107-1107010 carburetor, which is produced by the Dimitrovgrad Automobile Unit Plant, differs from the modifications 2107-1107010-10 and 2107-1107010-20 more complete set- it has a fitting of a vacuum corrector, an automatic vacuum drive of the secondary chamber flap, in some models, nozzles of the main dosing system with other nominal throughput rates can be installed. However, this does not affect the course of the basic tuning and adjustment processes.
Preparing the carburetor for adjustment
VAZ 2107 - in the photo - the car is carbureted and sensitive to fuel quality, therefore sometimes it needs to correct the throughput of channels and gaps
If the engine starts and runs stably at any speed and under any load, fine adjustment is hardly necessary. As a rule, this must be done in cases where the fuel consumption of the engine exceeds the nominal values, when the engine is hard to start, dips appear in transient operating modes, with a sharp acceleration. Absence or instability idle speed it is also treated by adjusting or cleaning canals and cavities.
Sometimes there are situations and vivid symptoms that it is necessary to adjust the ignition timing or adjust the VAZ 2107 valves, and the carburetor may be quite serviceable. Therefore, it is worth adjusting it only when there is confidence in the health of the ignition system, the accuracy of setting the thermal clearances of the valves, after checking the performance of the fuel pump, and good compression in each of the cylinders.
Adjustment may not bring results if the carburetor is clogged or has obvious mechanical faults or leaks. Therefore, a thorough examination and assessment of the external condition of the device is necessary. Adjustment and tuning is started only when all these conditions are met.
Checking and adjusting the float chamber
Before checking and adjusting the carburetor on the VAZ 2107, it is necessary to remove the air filter along with the body. And at the same time, check its condition, since a clogged dusty filter severely restricts air access to the engine, and this can also affect both the proportions of the working mixture and the operation of the carburetor peripheral systems. When the filter and housing are removed, unscrew the carburetor cover and gain access to most of the jets, float chamber and diffusers in the primary and secondary chambers. To begin with, unscrew the plug of the filter mesh at the bottom of the cover near the fuel supply connection. The mesh is carefully cleaned, washed, washed and the inner cavity of the screw plug, the condition of the aluminum or bronze sealing gasket is monitored.
When cleaning the internal cavities of the carburetor, important rules must be followed. Firstly, it is highly undesirable to clean with a fluffy or hard rag, since the fluff can easily clog the channels and nozzles. Secondly, during mechanical cleaning of channels and nozzles, in no case should it be used metal objects... They can irrevocably disrupt the throughput of the calibrated holes, then it will not be possible to correctly adjust the VAZ 2107 carburetor. The jets are cleaned only with wood chips, ideally with compressed air or special fluids for the cleaning. The cone valve and its seat are cleaned in the same way.
Before adjusting the fuel level in the carburetor, you need to make sure that the float is intact, does not have mechanical damage and does not let gasoline through, does not sink in it. If not, the brass float is replaced. The float is adjusted by changing the angle of the stop tabs. The factory recommends that such clearances be observed - with the needle valve closed, the distance from the float body to the carburetor cover gasket should be 6.5 mm. In this case, the maximum free travel of the float body should be no more than 8 mm, and the distance to the gasket in the extreme position should be within 14-14.5 mm. These values are achieved by bending the persistent tongues. Check the operation of the float and the cone valve by supplying gasoline with the cover installed, followed by monitoring the fuel level in the chamber.
Configuring and checking the launch system
This system is used to start a cold engine and warms it up by about 1.5-2.5 thousand revolutions. When the engine warms up, the system is manually disabled and the engine starts to idle with a frequency of about 800-900 rpm.
Maintenance and tuning of the starting system is reduced to cleaning the vacuum supply channel in the central part of the carburetor, checking the clearances and the air damper stroke, checking the vacuum drive reverse air damper, starting gaps of the primary chamber damper. With the air damper closed, the lever system should open the fuel damper by 0.8-0.9 mm.
The second important gap is between the air damper and the wall of the primary chamber. With the damper closed, this gap should be about 5-5.5 mm. It is adjusted with a screw, which is located under a brass screw cap on the body of the vacuum air damper position regulator. Checking the performance of the starting system is carried out with the installed air filter and on a cold engine.
Idle setting
Adjustment idle move carburetor DAAZ 2107-1107010 is carried out only when the ignition system is adjusted and operational, the thermal clearance of the valves is normal. You also need to pay attention to the absence of air leakage in the intake tract - in the manifold, under the carburetor, monitor the tightness in the joints between the parts of the carburetor. In addition, the idle solenoid valve and the nozzle mounted on the valve stem require special attention.
The solenoid valve is installed on the carburetor body, it is powered by 12 V, its positive wire is connected to it, and the mass on the valve body serves as a minus. If there is a suspicion in the condition of the nozzle and the operability of the valve, this is checked quite simply. The valve is unscrewed with a 13 key, the power wire is disconnected, the valve is removed from the carburetor body. The jet itself is washed, if necessary, blown through with compressed air. The solenoid valve is checked as follows: take a wire, connect the voltage from the positive terminal of the battery to the power terminal, install the valve body to the negative terminal of the battery. When voltage is applied to the positive terminal, the valve stem must retract into the body. If this does not happen, the valve is changed.
The carburetor idle system is adjusted only when the engine is fully warmed up. Two screws are involved in the process - a screw with a large head is responsible for the amount of mixture, and an adjusting screw of a smaller diameter regulates the proportions of mixing air and fuel in idle mode.
The engine is started and the number of revolutions is monitored in this mode. The tachometer should show 800-900 rpm. Begin the adjustment by looking for the most stable speed by turning the mixture quality screw. As soon as it was possible to adjust the carburetor to revs in the range of 900-1000 rpm, the VAZ 2107 engine works stably and smoothly, without failures, the number of revolutions is brought to normal with the help of the mixture amount screw. After that, it is worth looking for the optimal position of the quality screw to achieve maximum stable revolutions and repeat the adjustment with the quantity screw to set the nominal number of revolutions.
During adjustment, pay attention to the stop screw of the damper, since a correctly adjusted screw does not allow the damper to come into close contact with the walls of the primary chamber. In the position where the primary chamber damper is fully closed, the throttle shaft tongue should abut against the stop screw. This is necessary so that the damper does not break the walls of the primary chamber in the closed position. The tuned, heated carburetor should keep the idles stable and even, and when the pedal rpm increases, the transition from idle should not be accompanied by dips and jerks.
Correct adjustment of the VAZ 2107 carburetor with your own hands will allow you to get rid of unstable work engine and will save not only fuel, but time and nerves, especially in the cold season.
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10. The body o-ring must not be severely compressed or frayed. If the ring is deformed or the rubber has hardened, replace it as otherwise the trigger will not work.
11. The links of the telescopic link must move relative to each other for the full amount of travel without jamming and also freely return to their original position by the return spring.
12. The stability of the fuel level in the float chamber largely depends on the state of the fuel valve. The needle 2 of the valve should move freely in the seat 1, therefore, there should be no scratches and burrs on the inner cylindrical surface of the seat 1. Remove with fine sandpaper if necessary. After processing, the needle should not have excessive lateral play. Burrs on the guide ribs of the needle are not allowed, and there should not be a lot of wear on its working taper. Damping ball 3 should not hang in the depressed position.
Replace a badly deformed seat seal washer.
NOTE
If necessary, replace the needle and its seat at the same time as a set, since if the shape of the conical surface of one of the parts is distorted, replacing only the other will not restore the tightness of the mating.
13. The float must be airtight and free of dents. You can check the tightness of the float by lowering it for at least 30 seconds. into hot water. At the point of damage (usually along the seam), air bubbles begin to emerge from the heating float. The damage can be soldered by evaporating gasoline from it. After soldering, the mass of the float should be 11.5-12.5 g. If the mass is too large, remove some of the solder without affecting the tightness of the float. The surface of the tongue of the float bracket (shown by the arrow) should not have nicks and deep working in the place of its contact with the damping ball. If necessary, the depletion can be eliminated by grinding the tongue with zero emery paper.
14. Emulsion wells and carburetor body passages must be completely clean. If rinsing with acetone or solvent has not removed all contamination, use special reamers for cleaning.
Case surfaces mating with cover and case throttle valves, should not have deep nicks and warpage. Slight warpage at the locations of the threaded holes for the cover screws and the passage of the carburetor mounting studs, caused by excessive force when tightening the fasteners, should be eliminated by lapping on sanding paper, as for the carburetor cover, after pressing the adapter sleeves of the air-fuel channels out of the housing.
If the surfaces are significantly non-flat, try to align them with light hammer blows through a soft metal drift and then rub on sanding paper. If in this case it was not possible to eliminate the warpage, replace the housing, as the gaskets will not ensure the tightness of the carburetor connections.
Damage to the threaded holes of the carburetor body elements is not allowed. If the holes cannot be repaired by tapping larger diameters with the installation of repair fasteners or by any other available means, replace the body or, if such replacement is not possible, the entire carburetor assembly.
NOTE
To avoid damaging the thin-walled adapter sleeves, before pressing out, firmly insert metal rods or drill shanks of a suitable diameter (2.9 and 3.8 mm for different sleeves) into their holes.
15. The channels of small diffusers must be completely clean, and undeformed spring clips are installed in the grooves of the end surfaces mating with the grooves of the carburetor body. Pay attention to the marking applied in the casting on the outer cylindrical surface of the diffusers - the calibration number of the atomizer hole, for example "4.5". In addition, the diffusers of the first (lower) and second (upper) chambers differ in the location of the transverse brass pins pressed into their bodies. When removing diffusers, note or sketch their location so that diffusers are not confused when re-installing. After installation in the carburetor body, small diffusers should sit tightly in its grooves, without play and should not fall out under their own weight when the carburetor body is turned over.
16. The body of throttle valves should not have deformation, mechanical damage and torn off threaded holes. The channels and cavities of the body must be clean, and the holes for the axles of the throttle valves must not be noticeably worn out.
NOTE
If the holes for the throttle valve shafts are severely worn, replace the body as a unit with the latter, since the damper and shafts are matched to the body individually and do not have full interchangeability.
17. The branch pipe for supplying vacuum to the vacuum corrector of the ignition distributor and the mixing sleeve of the idle speed system must be securely pressed into their seats and not be damaged.
18. Inspect the accelerator pump sprayer parts. Damage to the sealing surfaces is not allowed. Replace heavily compressed sealing washers. The check ball valve in the fuel supply screw should move easily, without jamming, which is determined by the characteristic knock of the ball, shaking the fuel supply screw in the hand.
The carburetor is the most important system that has traditionally been used in many domestic vehicles produced in the last century. There were three main variants of the brands of this device that could be found on VAZ cars: Ozone, Solex and Weber. Today, vehicles with such systems continue to be actively operated, so it is important for any owner of such a car to know how to adjust the carburetor VAZ 2105 and VAZ 2107. It is advisable to do it yourself so as not to spend extra money on attracting third-party specialists.
Before proceeding to a description of the entire adjustment technology, you should understand the importance of this mechanism and the functions for which it is responsible.
What is the function of the carburetor
The function of an automobile carburetor is to create a special mixture of air mass and fuel used. After this process, the fuel mixture goes directly into the combustion chamber of the power unit. vehicle.
A similar principle of using fuel, implemented with the help of a carburetor system, allows, first of all, to really save on money, which was considered an urgent problem even at the time of the cheapness of this liquid.
The device of the DAAZ 2107-1107010 carburetor on the VAZ 2105 and 2107 1107010 20
On the VAZ 2105, VAZ 2106 and VAZ 2107, carburetor systems of the Ozone brand were most often installed. Their general marking was DAAZ 2107, but with some variations, depending on the specific vehicle model:
- DAAZ 2107-1107010. This variation was used on Fives and Sevens.
- DAAZ 2107-1107010-20. Operated on Six and Troikas of VAZ production.
- DAAZ 2107-1107010-10. Another option, which was used on Six and Troikas, where there was no special vacuum corrector.
The very design of the DAAZ 2107-1107010 carburetor is as follows:
- Autonomous system and idle shut-off valve;
- Special float chamber;
- Dispenser system;
- Throttle type damper;
- Econostat;
- A special compartment designed to remove crankcase gases;
- A system that connects both chambers of the carburetor.
Naturally, in order to increase the efficiency of this device, it is necessary to be able to perform its adjustment.
Preventive work
This step must be performed at regular intervals, as it can extend the life of the entire device. During it, the following processes must be performed:
- Conduct a visual inspection for deformations and damage.
- Clean the surface of the system from different types pollution.
- Periodically clean the strainer and flush the chamber containing the float.
- Clean air jets.
Strainer - essential element carburetor, it should be checked at least once every sixty thousand km., wound on the auto speedometer. How to do it:
- Using manual pumping, fill the float chamber with flammable liquid.
- This action will close the shut-off valve system.
- Move the top filter cover to the side and remove the valve. The product is washed with a solvent and dried with a jet of hot air.
- The float chamber can only be cleaned with a rubber bulb - you cannot use rags, sponges, and so on in this procedure. Drying is carried out with the same supply of compressed hot air into the system.
- Before replacing the carburetor cover, it is important to ensure that the floats are in the up position and that nothing is interfering with their functionality.
The tightness of the shut-off needle is checked using the same rubber bulb, which creates the same pressure as fuel pump vehicle.
After carrying out all these work, you can proceed to the direct adjustment of the carburetor system.
Idling adjustment on the carburetor VAZ 2105 and 2107
To complete this procedure, you must perform the following steps:
- Preheat the power unit to operating temperature.
- Set the maximum possible number of revolutions - for this, the so-called quality screw is used. Indicators should exceed the norm by one hundred revolutions per minute.
- With the help of the same screw, the engine is activated and the final speed adjustment takes place.
Naturally, the carburetor must be at its workplace and fully connected.
Adjusting the starting system
This stage is also relatively easy and should not cause any special problems for an experienced driver:
- The air filtration system is preliminarily removed.
- The motor starts, the suction is pulled towards itself.
- The air damper is forced to open one third.
- The engine speed is set to 3200-3600.
Then it only remains to return the barrier damper to its original position and reduce the number of revolutions by 300 units from the initial level.
Float system adjustment
Initially, it is important to check that the float is in the correct position. If some displacement is observed, then a special bracket-holder can correct the situation. Next is the following procedure:
- Remove the cover that covers the chamber.
- Move the float to the side a little and pull on the tab of the fixing bracket specially designed for this.
- By this action, achieve the state of the system when the visually observed gap between the float and the cover gasket is 6-7 millimeters.
If, when observing the state of immersion, this lumen is more than one or two millimeters, then the needle valve will have to be changed, since its needle is completely out of order.
Conclusion
In fact, these are all the procedures that should be carried out so that the vehicle's carburetor always works properly and as efficiently as possible. As can be seen from the description, it is not at all necessary to carry out dismantling work to adjust such a system. Only in the case of a float chamber, if there is such a need, can you first dismantle it. However, this is completely optional.
The cars of the Volga Automobile Plant of the seventh model were equipped with gasoline engines different modifications... The carburetor 2107 1107010 was installed on power units with a working volume of 1500 cubic meters. cm and provided him with high enough specifications. Detailed description, calibration data are given in the vehicle manual. Here you can also find the procedure for setting up the device for operation in different modes.
The mentioned model of the carburetor was developed by the specialists of the Dimitrovgrad Automobile Unit Plant according to the technical specifications of AvtoVAZ. Later, the production of this device was established at the Leningrad plant, where it received its own name Pekar. Under this trademark, the device is supplied to the market of spare parts for VAZ cars of various modifications.
In terms of design, this device is absolutely identical to DAAZ products, at the same time, experts and car owners note high quality components and assembly. At the same time, the cost of the Pekar carburetor is much lower than that of analogues. This circumstance explains the fact that this unit is increasingly used on VAZ cars. different models and including the famous seven.
Carburetor device
This device is designed to create a fuel-air mixture of a certain composition on VAZ engines of different models. The Pekar brand carburetor has the following device:
- float chamber;
- main dosing systems - two circuits;
- membrane type starting device;
- enonomizer and driven by a pneumatic device;
- diaphragm accelerator pump;
- idling system with a shut-off solenoid valve;
- transitional system for switching on the secondary chamber.
On carburetors of the Pekar type, which are intended for installation on VAZ cars, it has a special device to provide ventilation of the engine crankcase. The gases that break through into the body of the power unit through a tube enter the car's combustion chamber through the carburetor. This makes it possible to reduce the toxicity of the VAZ car engine to an acceptable level. The Pekar model carburetor is more reliable than analogues.
Carburetor specifications
Products of the Pekar trademark, which are intended for use on power units VAZ, do not differ from similar DAAZ devices. The main parameters of this type of carburetor:
- Dosing systems: primary chamber diameter - 28 mm, secondary - 32 mm
- The geometry of the diffusers: chambers No. 1 - diameter 22 mm and No. 2 -25 mm;
- Fuel jets of the main dosing system, for the primary chamber - 1.12 mm, for the secondary - 1, 50 mm.
- The dimensions of the air jets of this system for both parts of the device are 1.5 mm.
The main indicators of the unit for transition system carburetor, which provide it with a sufficiently high throttle response, are the size and performance. The diameter of the hole designed to provide preparatory processes when connecting the secondary chamber of the device. By sequentially pressing the lever ten times, up to 7 ml of fuel is injected into the chamber. This allows, when using a Pekar brand carburetor, to achieve a sharp acceleration of a VAZ car.
Idle speed adjustment
Setting up a working device designed for mixture formation is carried out using the following devices and tools:
- built-in or plug-in tachometer;
- a device for determining the toxicity of exhaust by the content of carbon monoxide;
- flat-head screwdrivers.
The procedure for making adjustments to the Pekar-type carburetor on VAZ engines is as follows:
- In the float chamber, the level is checked using a special template.
- We check the gaps between the contacts in the ignition distributor and the condition of the spark plugs. They must match the heat rating of the engine.
- The power package will start and run without load until it reaches operating temperature.
- Turning the screw for the amount of the mixture, set the speed crankshaft ranging from 820 to 900 rpm.
- By tightening the mixture quality screw, we simultaneously control the CO concentration in the exhaust. At an air temperature of 20 ° C and normal atmospheric pressure, this figure should be between 0.5 and 1.2%.
- By screwing the amount of the mixture of the Pekar-type carburetor, we again achieve the restoration of the idling parameters of the VAZ engine.
One of the carburetors installed on VAZ 2105-2107 cars, produced by the Soviet and later the Russian car industry, is the Ozone DAAZ 2107-1107010-20. Its design is quite simple, so any garage master can repair and configure this device. Let's try and understand its structure.
Features of the DAAZ 2107 device
DAAZ 2107 is a 2-chamber carburetor with a mechanical drive of the primary chamber damper from the gas pedal.
The carburetor consists of:
- dosing systems (2pcs);
- secondary mixing chamber transition system;
- autonomous idle system;
- pneumatic econostat;
- launch devices;
- accelerating pump;
- spool-type crankcase ventilation systems.
Maintenance and adjustment of DAAZ 2107
The main work on the maintenance and adjustment of the carburetor:
- inspection for visible faults;
- surface cleaning and washing;
- washing the float chamber;
- cleaning the strainer;
- cleaning (blowing) or replacing the jets;
- float chamber adjustment;
- idle speed adjustment.
If you have never faced such a task, it is better to entrust it to a specialist, but if you have at least some idea of the principle of the carburetor, you can handle it yourself.
1. Let's start with the simplest thing - washing and cleaning. To do this, remove the carburetor from the engine and clean it outside.
Carburetor daaz 2107 1107010 20 device
2. For this, it is better to buy a special aerosol with a straw. You can buy it at any car dealership. The average price is just over 100 rubles.
4. Visually inspect the float mounting bracket and check its movement.
5. We carry out the adjustment of the float chamber. We take a lid with a float and hang it strictly vertically.
6. We measure the distance from the cover to the side surface of the float. It should be 6-7 mm.
7. If no suitable measuring device is available, use a 6 mm drill bit between the cover and the float. If the distance is greater or less than the indicated one, we achieve the desired value by bending the bracket in one direction or another.
8. Now, in a vertical position, move the float as far as it will go. The distance between its surface and the lid should be 15 mm. If the distance does not correspond to this value, bend or bend the float tongue.
9. After adjustment, do not put the cover back in place.
10. We pass to the strainer.
11. Unscrew the plug and remove it. We rinse with an aerosol and blow it through with a compressor or pump. We put the filter back.
12. Now carefully unscrew the air and fuel jets.
13. We wash and purge them, after which, without confusion, we put them in their places.
14. Now we assemble the carburetor and install it on the engine. All other work will be performed with the engine starting.
15. To adjust the idle speed, we need an electronic tachometer and a slotted screwdriver.
16. Use a screwdriver to tighten the screws for adjusting the quality and amount of fuel until it stops. After that, we release the quality screw by 2-3 turns, the quantity by 3-4.
17. We start the engine, warm it up to operating temperature. We muffle, connect the tachometer, as indicated in the photo, and start again.
18. We turn the quality screw counterclockwise, achieving maximum speed. Turning the quantity screw in the same direction, we increase the speed by another 80-100 units.
19. Now let go of the quality screw (counterclockwise), and check if these revolutions are the maximum for the quantity we have set by turning it left-right.
21. For the most accurate adjustment of the idle speed requires the use of special equipment, such as a CO2 and CH analyzer. It is possible to carry out such adjustment work only in a specialized service.
You can learn more about the DAAZ 2107-1107010-20 carburetor from this video
