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

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42

The most popular carburetor model on VAZ-21083 cars is "Solex". Most of the cars of the 8th and 9th families were produced with engines with a carburetor injection system. At the beginning of the 2000s, injection injection began to be used for the first time. The carburetors of this model are very easy to adjust, there is practically no fine tuning, the design does not include complex components and mechanisms. In the article, we will consider all the subtleties that the Solex 21083 carburetor has.

Carburetor design

DAAZ-2108 carburetors began to be used on VAZ cars in the mid-eighties. The very first car they were installed on was the VAZ-2108 model. They worked with engines of 1.1 and 1.3 liters. After the launch of production of cars with engines of 1.5 liters, Solex 21083 carburetors appeared. The numerical designation indicates thatthe 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 load and speed.

Structurally, the carburetor is made of several elements:

1. The main body, which houses the economizer, XX system, main dispenser, various diffusers, accelerator pump.
2. Cover containing floats, idle valve, starter, choke.

Carburetor - a two-chamber type device, jets are located in the main dosing system. They are installed in the chambers in the middle, inside the case. In the upper part, the air jets of the dosing system were installed. The design provides for the presence of a small block that heats the fuel mixture. It is connected to the hoses coming from the pipes of the cooling system. At the bottom of the housing are two throttle valves that open alternately. The dampers are opened sequentially using levers. There are two pipes on the lid, which are designed to supply gasoline and drain excess back to the tank.

Selection of jets for the Solex carburetor

Repair kits are available. They consist of air and fuel jets of the secondary and primary chambers. There are several types of repair kits that can work with different engines. It all depends on whatdiffuser section. In some cases, it will be much better to purchase a VAZ carburetor. The price of a new one is about 4000 rubles.

Since this type of carburetor can be installed on engines of other cars, when using standard jets, their cross section is not enough. The engine has one requirement for the fuel-air mixture, and the carburetor does it with a completely different proportion. To improve acceleration and dynamics, jets with a large cross section can be installed.

But at the same time, gasoline consumption increases a lot. You also need to know that the installation of such jets does not guarantee a 100% positive result. You will do the right thing if you do not experiment, but simply install a kit designed for this engine on the carburetor.

Insufficient engine power: causes

If the carburetor is installed on the VAZ-21083 engine, then it is better to use jets designed specifically for it. If even when installing jets with a large diameter, the acceleration of the machine is weak, there may be several reasons:

1. Insufficient compression level in the engine cylinders.
2. Ignition timing too early or too late.
3. Poor-quality spark plugs or their failure.
4. Damage to high-voltage wires.
5. Ignition distributor failure.

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

Can the Solex carburetor be installed on other engines?

The expediency of installing the Solex 21083 carburetor on other car models is very doubtful, since the savings are small. And then only in the case when the driver drives carefully and does not accelerate sharply. For this reason, it is best to install a carburetor on an engine with which it will work as ideally as possible. Jets must also be selected from those proposed by the manufacturer. On the Solex 21083 carburetor, adjustment is easy, but achieving perfect operation on engines with large volume is problematic.

Before buying, pay attention to the manufacturer of the repair kit. Very often come across Chinese cheap products that do not differ in quality. The cross-sectional diameter of the jets may differ from the declared value, so the operation of the carburetor will be incorrect. Buy the jets included in the repair kits for the Solex 21083 carburetor only from a trusted manufacturer who has proven himself on the good side.

How to adjust

Only three adjustments can be made on Solex 21083 carburetors:

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

The last adjustment is quite simple, anyone can do it themselves. To do this, the engine warms up to operating temperature, and using the mixture amount screw, the crankshaft speed is set to 800 rpm. Further actions are:

1. The quality screw is screwed in until the number of revolutions of the crankshaft begins to decrease significantly. Engine operation will be intermittent.
2. Then the screw is loosened one turn to start the engine running normally. If you unscrew this screw too much, then gasoline consumption will increase dramatically.

Otherwise, it is necessary to stabilize the operation of the motor with the quantity screw.

Idle system malfunctions

The Solex 21083 carburetor, whose adjustment is discussed in the article, sometimes has one problem. This is the inability to adjust the idle speed with the mixture quality screw. Reasons for this behavior:

1. Jet clogged in solenoid valve.
2. No gasoline is flowing through the idling channels.
3. There is a malfunction in the solenoid valve.

To make sure that the electric valve is working, you need to perform a number of actions:

1. Stop the engine and remove the wire from the contact on the valve.
2. Unscrew the electric valve.
3. Remove jet, use pliers if necessary.
4. Turn on the ignition.
5. Connect the wire to the contact on the valve, its bodyattach to mass.

If there was a click, and the valve stem sank, freeing the holes in the jet, then there is no problem with the device. Otherwise, a new solenoid valve must be installed. Very often small specks get in, so it is necessary to blow the jet. The operation of the idle air solenoid valve can be checked by removing the wire from the tip while the engine is running. The engine should almost immediately stall, this indicates that the mechanism is working.

Setting the level of gasoline in the float chamber

In order for the intake and consumption of gasoline by the fuel system to be balanced, you need to set the float level. To do this:

1. Disassemble the top of the carburetor, remove the filter housing, disconnect the cables.
2. Remove the fuel system hoses.
3. Use a Phillips screwdriver to remove the screws securing the cover to the main body.
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 adjusting, you need to consider that the floats must be at the same level. All work is done relatively simply, change the jets to "Solex 21083" and carry out the adjustment - this is the maintenance of the injection system.