What is the difference between the Solex carburetor 21073 and 21083

The domestic SUV VAZ-2121, also known as the legendary Niva, has been tirelessly traveling around the expanses of our vast homeland and beyond its borders since 1977. Currently, this car not only has not lost its popularity, but on the contrary - the demand of car enthusiasts for this miracle of the automotive industry is only growing every year.

Why did the Niva become such a popular car? It's simple. The car's high seating position, all-wheel drive, ease of maintenance and relatively cheap prices for spare parts - that's the whole secret. Fishing, hunting, travel, expeditions and even sports racing - all this is the nature of the Niva.

Since 1994, serial production of the VAZ-21213 model under the name “Taiga” began.

This VAZ model is equipped with a 1.7-liter carburetor gasoline engine, a five-speed manual transmission, and a contactless ignition system. A Solex 21073 carburetor is installed on the Niva. In the modern world, when progress does not stand still, a carburetor under the hood of a car, and even an SUV, looks sad.

When buying a used car, most motorists prefer to choose an injection version rather than a carburetor. And today's youth look at the carburetor in surprise, completely not understanding what it is. But if a person has at least a little understanding of technology, then understanding the essence of the Solex 21073 carburetor will not be a problem.

It is enough to familiarize yourself with some information.

What kind of carburetor is installed on the Niva initially?

The Niva car is equipped with carburetors from the classic “Ozone”, which is not the best two-chamber unit with an idle economizer.
The economizer is an autonomous system with a solenoid valve that automatically comes into operation when the ignition is turned on. When the speed increases above 1000, it is turned off, and the engine is maintained using an air damper.

The updated model received the French Solex design. The 1.7-liter engine required an increase in the amount of air-fuel mixture, and therefore Ozone was no longer used.

Blocking the second carburetor chamber

The throttle valve of the second chamber can only open when the air damper is open, when the edge of lever 5 (Fig. 2-81) does not rest against pin 2 of the second chamber locking lever.

In this case, when opening the throttle valves, the locking lever acts through lever 14 on lever 13, and the valve of the second chamber opens.

When closing the air damper, lever 5 with its outer edge acts on pin 2 of the locking lever and disconnects lever 14 and the locking lever. Now the throttle valve of the second chamber is blocked and cannot be opened.

Which Carburetor is Better to Put on Niva

Which carburetor is best to install on the field?

21213

More than fifty years later, the Russian auto industry continues to firmly hold its favorite position in the automotive market. The VAZ family has a very reasonable price and is quite standard in service.

There was great demand for the Russian VAZ-21213 jeep and its analogues. This type of VAZ car has achieved great success in world motorsport, setting unattainable records. Working with wag-com; battery management; decent taxi fleet; THE USSR; Photo; how to sheathe a roof profile; what tires to put on the field in winter; Daewoo Winstorm max. Chevrolet Front Hub. This car model is very intensively exported to European countries and beyond.

Motorists who do not have much experience in servicing this type of car often encounter various problems associated with the operation and repair of Niva. One of these common problems is carburetor repair and replacement.

Many drivers do not know which model is better

choose how they differ and how to manage them when choosing one or the other.

Often the carburetors on different Niva models are very similar and located in the same way. They are located in the drive system and create the desired fuel mixture of fuel, combining fuel with air, and supply it to the engine. The carburetors ordered are also identical. Key elements include:

1. Float chamber (jet).
2. Diffuser.
3. throttle

Depending on the car model, the carburetor can have from 1 to 4 chambers; the flaps can be opened alternately or immediately; The movement of the flammable consistency can be horizontal, downward or upward.

Inexperienced motorists can use a carburetor diagram, which will list all the parts and describe their positions and functions. It will be much easier to find and change a specific part.

Niva 21213 replaced the previous VAZ-2121 and became more sophisticated and refined. The updated model has:

• 1.7-liter engine, the founder of which was the engine from the Russian “six”;
• five-speed gearbox;
• 
  Solex carburetor
• contactless ignition using a microcontroller.

To always be confident in your car, you need to thoroughly know all its “inner money”, understand its features and understand its details. Later in this article we will look at the design of the Niva 21213 carburetor in order to have an idea of ​​this part and learn the intricacies of its operation.

53 No worse, maybe even better 73 per car 21 213 1.7 l

Carburetors on a world map near you! Purchase of nails.

Does he want something NIVA?! (About choosing a carburetor)

In this video, Nil Poroshin talks about which carburetor

NIVA
5 doors !

Carburetor in field 21213 what I put

Initially, when the VAZ 21213 was designed and manufactured by the manufacturer, it had a carburetor

Ozone brand.
In 1994, the manufacturer decided to update the Niva. In addition to the engine and other parts, it was replaced carburetor . Car owners still argue about which division is better Niva owners have varying opinions, and each type of carburetor does have many pros and cons. which model of the unit is better
.

The ozone has an old switch installed, but there is no vacuum masker. Solex does not have a microswitch on the economizer, which negatively affects the cleanliness of the exhaust and fuel consumption. Both types of carburetors have both pros and cons. But VAZ engineers preferred Solex as a more modern model. However, many car owners often complain about this type of carburetor due to its malfunction. Experts believe that this may be due to poor quality gasoline. Also sometimes the reason is the need to replace the fuel or air filter. In addition to the proper operation of the carburetor, it and its entire ventilation system must be regularly cleaned of oil contaminants. Some Niva drivers with Ozone installed are automatic Solex carburetors Most people agree that this has a positive effect on the performance of their vehicles.

regulation of VAZ-21213 carburetor

Sometimes adjustments can solve most problems and change the carburetor

no need. While driving, you may try to adjust the device while driving, feeling immersed, unsteady at idle. Knowing the fuel consumption for such tasks will be an additional advantage. Carburetor tuning work on a VAZ-21213 can be done independently without the help of a mechanic. This work will be no more difficult than tuning a VAZ-2121.

Car owners distinguish between two methods of regulation:

1. The carburetor
   must be removed .
2. This can be adjusted without removing parts.

Of course, the second method is better for car owners. It will take less time and hassle.

Remove the air filter first, but let the car run for a few minutes before doing so. You can then remove the fuel hose and remove the carburetor cap. Then use a caliper to measure the distance between the beginning of the float chamber body and the fuel level. Indications that correspond to the norm. 24-25 mm. If the data does not meet the standard, the float arm should be bent. Probably, such manipulations will need to be performed several times until you achieve the desired result. Every action is controlled by distance measurement. When the readings return to normal, the carburetor and turned around.

Next, adjust the engine to idle speed. For this you need a quality screw

Unscrew the mixture completely, then unscrew it 4 turns.
Start the engine, turn on the lights and cooler. The suction handle is completely recessed. The speed should be up to 800 per minute. Then raise it to the maximum and lower it again to 900. We do this while the motor is not running. At this point, the quality screw is turned 1 turn and with its help we reach the desired level. In summer it should be about 800-900, in winter. 900-1000 rpm.

Operating principle

Solex 21073 works as follows. Gasoline will enter the float chamber using the inlet fitting - the fuel also passes through the filter mesh, where it is cleaned, and goes through the needle valve. The chamber with the float is two-sectional, and the sections are connected to each other. They will contain the same amount of gasoline. This design makes it possible to significantly reduce the effect of body tilt on the fuel level in this chamber.

This ensures more stable engine operation. As the chamber fills, the float, pressing part of the needle valve, blocks the access of fuel to the chamber. This maintains a constant level of gasoline in the mechanism. Next, from the float chamber, gasoline flows through the jets into the mixing wells. Air enters these same wells through special holes in the emulsion tubes or air jets. Next, gasoline and air are mixed in them. As a result, a fuel mixture is formed. It will get into the small as well as large diffusers of the device. This is the main dosing chamber. Depending on the operating mode of the engine, certain mechanisms and systems can be started in the carburetor. When the owner tries to start the engine “cold” in order to enrich the fuel mixture, the starting device comes into play. The driver starts it from the passenger compartment - this is a choke.

When the handle is pulled out to its maximum, the air damper of the first chamber is completely closed. At the same time, the throttle valve in the first chamber opens to the distance of the starting gap. It is adjusted using the adjusting screw on the Solex carburetor. Adjusting the gap will allow you to adjust the idle speed.

Carburetor repair for dips and jerks

Carburetor repair may be necessary if the engine idles unstable, and adjusting the quantity and quality screws does not always help. Often the reason lies in over-enrichment of the mixture, which may be a consequence of incorrect adjustment of the float system or malfunctions in the vacuum economizer system for power modes. In the latter case, a torn diaphragm may need to be replaced or the economizer valve through which fuel is leaking may need to be repaired.

Model 2121 may cause jerking, swaying or dips when moving. In this case, there may be several reasons for their occurrence, which may require carburetor repair to eliminate them. Dips that appear when the throttle valve is slowly opened are often associated with clogging of the idle jet. Here it is necessary to adjust the fuel level and check the level of clogging in the main fuel jets.

If the car gives a deep failure when trying to open the first or second throttle chambers, then in addition to clogged nozzles, the reason may be poor installation of small diffusers in the corresponding sockets.

When the Niva 21213 gives slight twitches at low and medium speeds and accelerates sluggishly, it may be due to poor fuel dosage on the shut-off valve side due to its wear. In this case, repairs are needed in terms of replacing the shut-off valve with a shut-off needle made of metal with a valve that has this needle made of a different material.

Cars of the 2121 series sometimes give failures when any sudden opening of the throttle valves, which then disappear within 5 seconds when the engine is running at the same pace. Often such problems are associated with a malfunction of the accelerator pump, which leads to a lack of or an incorrect drop in gasoline flows. A similar situation can result from a diaphragm rupture, a rubber O-ring on the sprayer holder being destroyed, or the lower part of the valve being destroyed.

Adjustment

If the installed Solex 21073 carburetor on the Niva fails, repairs and adjustments help bring the device back to life. The settings allow you to restore optimal modes in which the motor will operate as efficiently as possible. Fuel consumption is at an average level. First of all, start the engine and warm it up a little. Next, you need to remove the fuel hose and the device cover. It is recommended to remove the latter with extreme caution so as not to damage the float. Next, using a measuring tool, measure the distance in each of the carburetor chambers. Measure from the mating surfaces to the edge of the fuel. This size should be approximately 24 mm. If this distance is less or more, then it is adjusted by bending the float. Then you need to start and warm up the engine again. When the level adjustments are successfully completed, you can proceed to adjusting the idle speed.

The engine is turned off. To set up, you will need a flathead screwdriver and a little time. There is a hole on the base of the device in which there is a screw that regulates the quality of the fuel mixture. It is twisted all the way. Then from the extreme position the same screw is unscrewed by about five turns. Then the engine is started. There is no need to use a suction. If you unscrew the “quality” screw, then the carburetor will change the engine speed. Then it is twisted again. It is required to rotate until the operation of the motor is stable and stable. When the engine starts to run smoothly, then the element is unscrewed no more than one turn. As a result, the idle speed will be set at 900. If the engine starts to stall, it is better to slightly increase the idle speed.

Reviews about installing other carburetors on Niva 21213

Reviewed by: Ssan40

Idle system

The device is equipped with an idle system. It is designed to allow the engine to operate at low speeds. At this moment, the vacuum in the diffusers is very small. Fuel cannot enter the main metering system. At idle speed of the engine, fuel is supplied under the throttle valve of the first chamber of the carburetor. There the vacuum is strong enough to form a stable combustible mixture.

Air is supplied through the main jet and the emulsion well of the first chamber. The fuel will then flow to the idle fuel jet. After this, it is mixed with air supplied from the XX air jet. Oxygen is supplied to this element through a special channel. This operating scheme allows the engine to ensure a smooth transition from load to idle and prevents fuel from leaking out of the float chamber.

Do-it-yourself VAZ 2121 carburetor repair

Repair of the carburetor unit on the Niva may be required in different cases. If a car enthusiast has practical skills in servicing his “four-wheeled friend,” then performing repair work independently will not be difficult for him. However, it should be noted that the design of carburetor mechanisms is highly complex, so high-quality work without preparation is unlikely.

Signs and causes of malfunctions of Ozone carburetors

External manifestations of the operation of the engine unit and the driver’s own sensations, as a rule, may indicate the occurrence of any malfunctions in the operation of the carburetor. The most common signs of malfunctions on Ozone are:

unstable operation of the power unit at idle;

the car loses its dynamics;

after reaching a speed of 90 km/h, engine productivity drops sharply;

difficulty starting;

increase in fuel consumption.

Thus, if Ozone shows one or more of these signs of malfunction, this means that repair work is necessary.

Video: carburetor starter repair

The engine receives too much gasoline - the carburetor is flooded / the needle is stuck

If a car owner notices that the carburetor is constantly being filled with excess gasoline, we can conclude that the needle valve is faulty. Over time, it can lose its throughput, which is why at first there are difficulties in starting the engine, fuel drips appear on the carburetor, and then it will be impossible to start the engine at all.

The way out of the situation is to replace the needle valve yourself. To do this you will need:

Remove the cap from the carburetor.

Align the float along its original axis.

Disconnect the needle valve.

Screw a new valve into the vacant space.

Screw the lid into place.

The car cannot maintain idle speed and immediately stalls

In this case, the economizer will need to be replaced. Most likely, the reason lies in this component, since it ensures the supply of fuel to the engine at idle. In rare cases, the idle speed control unit on Niva carburetors may fail.

To determine the cause of the malfunction, it is recommended to disassemble the carburetor and inspect the economizer and idle devices. Their condition will be visually noticeable (adhesion of a large amount of soot and dirt, deformation). If devices fail, the procedure for replacing them is as simple as possible: a new one is installed in place of the old component.

Float mechanism

The Solex 21073 carburetor, installed on the Niva, has a float chamber of two sections. They are located on both sides of the main cameras of the device. The system consists of two ebonite floats, which are mounted on a lever.

The latter swings on an axis pressed into the bosses of the device cover. There is a tongue on the bracket. The element presses the needle valve needle through a special ball. The float mechanism serves to adjust the level of fuel required for normal operation of the carburetor. The needle valve is a non-separable type. It is not being repaired. The valve body is mounted on a thread in the carburetor cap. The ball protects the needle from shock when the machine moves. If the chamber is empty (for example, if the driver is using LPG), then the floats will knock.

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Which Carburetor to Put on a VAZ 2121

Which carburetor

better
put it on Levels 2121

Niva 2121 , or VAZ-2121 is considered a small-class SUV, which has a supporting body and permanent all-wheel drive. The first model of this car had an engine with the same markings. VAZ-2121. I entered his package and the Daaz 2107-20 or “seven by twenty” carburetor If this doesn't work, is it best to use a Niva 2121 carburetor from modern models?

Which carburetor is better to install on Niva 21213

The domestic auto industry, after more than fifty years, continues to firmly hold a leading position in the car markets.
The VAZ family has a very reasonable price and is quite easy to maintain. Huge demand has appeared for the Soviet SUV VAZ-21213, as well as its analogues. This type of VAZ car has achieved enormous success in world motorsport, setting unattainable records. This type of car is very actively exported to European countries and beyond.

Car owners who do not have much experience in servicing this type of car quite often encounter various problems associated with the operation and repair of the Niva. One of these common problems is carburetor repair and replacement.

Many drivers do not know which model is better to choose, how they differ from each other and what to follow when choosing one or the other.

Often, carburetors on different Niva models are very similar and are designed in the same way. They are located in the engine system and make the necessary combustible mixture from the fuel, mixing fuel with air, and supplying it to the engine. Carburetors are also designed in the same way. The main elements include:

1. Float chamber (jet).
2. Diffuser.
3. Throttle valve.

"Solex" and "Ozone"

The VAZ 2121 Niva model can be equipped with an “Ozone” carburetor with the serial designation 2107-110-7010-10 or 2107-110-7010-20. They differ from each other in that the first option has an old-style breaker and does not have a vacuum corrector. The second carburetor does not have a microswitch from the economizer, which affects the environmental friendliness of emissions and has some impact on fuel consumption.

This is the car part

• Do-it-yourself carburetor adjustment for VAZ 2107

The Niva 21213 is equipped with Solex type carburetors (model 21073-110-7010). They are considered quite “capricious”, which is primarily due to the negligence of the owners themselves. The incorrect operation of the device is primarily affected by low-quality fuel with a large amount of impurities, since in this model the fuel is taken through holes in the bottom of the float chambers (in other models these elements are raised above the bottom).

In addition, problems arise for those “nivovods” who do not promptly change the fuel or air filter, and also do not pay attention to proper cleaning of the carburetor from oil soot emissions through the ventilation system.

Adjustment of the VAZ carburetor is usually carried out in the float mechanism or in the starting and idle systems. These are very important operations that are best left to the experts.

The float mechanism on the Niva 2121 is adjusted in terms of the position of the floats relative to each other and relative to the walls of the float chamber. In addition, the mechanisms in the open and closed positions of the needle valve may need to be adjusted. In order not to disturb good adjustment, the car owner needs to carefully handle the carburetor cover when removing it, monitor the level of wear of the shut-off cone from the needle (its seat and tongue), as well as the axis of the mounting bracket.

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