Carburettor "Solex 21083". "Solex 21083": device, adjustment, price

The most popular carburetor model on VAZ-21083 cars is Solex. Most cars of the 8th and 9th families were produced with engines having a carburetor injection system. At the beginning of the 2000s injector injection was first introduced. Carburetors of this model are very easy to adjust, there is almost no fine tuning, the design does not include complex knots and mechanisms. In the article we will consider all the details that the carburetor "Solex 21083" has.

Carburetor design

Carburettors DAAZ-2108 began to be used on cars VAZ in the mid-eighties. The very first machine to which they were installed was the VAZ-2108 model. They worked with motors of 1.1 and 1.3 liters. After the launch in the production of cars with engines of 1.5 liters there were carburetors "Solex 21083". The digital designation indicates that the device is mounted on VAZ-21083 engines, the volume of which is one and a half liters.

The main purpose of the carburetor is the preparation of a combustible mixture of gasoline and air, which ensures the normal operation of the engine, regardless of the loads and the number of revolutions.

Structurally the carburettor is made of several elements:

1. The main building, in which the economizer, the system XX, the main dispenser, various diffusers, the accelerating pump are located.
2. A cover in which there are floats, the valve of idling, the starting device, air заслонка.

The carburetor is a two-chamber type device, in the main dosing system there are jets. They are installed in the cells in the middle, inside the case. In the upper part, the air jet nozzles of the dosing system were installed. The design provides for a small unit, which heats the fuel mixture. To it are connected hoses coming from the nozzles of the cooling system. In the lower part of the body there are two throttle valves, which alternately open. The dampers are opened in series, using levers. On the lid there are two branch pipes, which are intended for supplying gasoline and removing surpluses back to the tank.

Selection of jets for carburetor "Solex"

On sale there are kits for repair. They consist of air and fuel nozzles of the secondary and primary chambers. There are several types of repair kits that can work with different engines. It all depends on the cross section of the diffusers. In some cases it will be much better to buy a carburetor VAZ. The price of the new is about 4000 rubles.

Since this type of carburetor can be installed on the engines of other cars, using standard jet nozzles is not enough. At the engine, the requirement for a fuel-air mixture is one, and the carburetor makes it absolutely with a different proportion. To improve acceleration and dynamics, it is possible to install jets with a large cross section.

But at the same time the consumption of gasoline is much increased. Also it is necessary to know that the installation of such jets does not guarantee a 100% positive result. You do the right thing, if you do not experiment, but simply install the kit on the carburettor designed for this engine.

Insufficient engine power: causes

If the carburetor is mounted on the VAZ-21083 engine, then it is better to use the jet nozzles designed specifically for it. Even if the installation of nozzles with a large diameter, the acceleration of the machine is weak, there may be several reasons:

1. Insufficient level of compression in the engine cylinders.
2. The ignition timing is too early or too late.
3. Low-quality spark plugs or their failure.
4. Damage to high-voltage wires.
5. Malfunction of the ignition distributor.

There are many reasons why the engine does not develop the required power. To identify them, you will need to conduct a thorough car inspection and diagnostics of all the nodes.

Is it possible to install the Solex carburetor on other engines?

The advisability of installing the Solex 21083 carburetor on other models of cars is very doubtful, since the savings are small. And then only in the case when the driver drives neatly and sharply does not accelerate. For this reason, it is best to install the carburetor on the engine, with which it will work as perfectly as possible. Gikleri also need to choose from the proposed manufacturer. On the carburetor "Solex 21083" adjustment is easy, but it is problematic to achieve an ideal job on engines with a large volume.

Before buying, pay attention to the manufacturer of the repair kit. Very often come across Chinese cheap products, which do not differ in quality. The diameter of the section of the nozzles can differ from the declared value, so the carburetor's operation will be incorrect. Buy the carburetor "Solex 21083" jets included in the repair kits, only from a trusted manufacturer who has proven himself on the good side.

How to adjust

Only three adjustments can be made on carburettors "Solex 21083":

1. Install the fuel level in the float chamber to the required value.
2. Set the engine speed at idling speed.
3. Change the composition of the air-fuel mixture with a quality screw.

The last adjustment is quite simple, anyone can do it himself. For this, the engine warms up to the operating temperature, and the engine speed is set at 800 rpm using the mixture quantity screw. The following actions are:

1. The quality screw is screwed in until the crankshaft speed is significantly reduced. Engine operation will be intermittent.
2. Then turn the screw one turn to start the engine in normal mode. If you strongly unscrew this screw, then the consumption of gasoline will increase dramatically.

Otherwise, it is necessary to stabilize the motor by the quantity screw.

Malfunctions of system of idling

The carburetor "Solex 21083", the adjustment of which is discussed in the article, sometimes there is one problem. This is the inability to adjust the idle speed with a mixture quality screw. The reasons for this behavior:

1. In the solenoid valve, the jet is clogged.
2. The channels of idling do not receive gasoline.
3. There is a malfunction in the solenoid valve.

To verify the operation of the electric valve, it is necessary to perform a number of actions:

1. Switch off the engine and remove the wire from the valve.
2. Unscrew the electric valve.
3. Remove the nozzle, if necessary, use pliers.
4. Switch on the ignition.
5. Connect the wire to the contact on the valve, attach the body to the mass.

If there is a click, and the valve stem is drowned, releasing the holes in the jet, then there is no problem with the device. If not, install a new solenoid valve. Very often small particles fall, so it is necessary to blow the jet. The operation of the idle solenoid valve can be checked if, with the engine running, remove the wire from the tip. The engine should almost instantly decay, this indicates that the mechanism is working.

Setting the level of gasoline in the float chamber

To receive and consumption of gasoline fuel system was balanced, you need to set the level of the float. For this:

1. Disassemble the top part of the carburettor, remove the filter housing, disconnect the cables.
2. Remove the fuel system hoses.
3. Remove the screws that secure the cover to the main body with a Phillips screwdriver.
4. Between the float and the horizontal of the cover there should be a gap of no more than 1-1.5 mm. Otherwise, you need to make adjustments by bending the plates.

When setting up, you need to consider that the floats should be on the same level. All the work is relatively simple, change the nozzles to "Solex 21083" and carry out adjustment - this is the maintenance of the injection system.