For over 100 years, carburetors have dominated all gasoline vehicles. With the introduction of injection systems, these devices have virtually ceased to improve. But carbureted cars are still leaving the conveyors of domestic automobile plants. And although their production volume has decreased markedly, they will be operated for a very long time. Sometimes they fail, and then a Solex carburetor needs repair.
Typical malfunctions
If the car’s engine does not start or runs, but stalls quickly, this may be due to a lack of fuel in the float chamber. The composition of the fuel mixture may also be impaired. If the engine idles very unstable, then there may be several problems.
This is a blockage of the idle channels, various malfunctions in the functioning of the
electromagnetic valve or control unit. The
rubber seal of a quality screw may also be deformed.
High idle
If there are low or very high idle speed, this may be due to malfunctions in the adjustment or improper fuel level in the chamber. In addition, air or fuel jets could become clogged. It is also possible in case of partial opening of the air damper. It is necessary to carry out adjustment and, in some cases, repair of the Solex carburetor.
Poor engine starting and increased consumption
If a cold engine starts poorly, then this may be a sign of incorrect adjustment of the trigger. If the air damper is partially closed, this can lead to excessive depletion of the combustible mixture. This phenomenon is caused by the absence of flashes in the combustion chambers. Incorrect opening of the damper after the engine is started leads to enrichment of the mixture, as a result of which the motor “chokes”.
The carburetor VAZ Solex may require repair or maintenance if a warm engine does not start well. This may be due to the fact that too rich a mixture enters the combustion chamber , which is caused by a high level of combustible fuel in the float chamber. The reason for this is a violation of the regulation or lack of tightness of the fuel valve.
If the car began to consume more fuel, then this can also be caused by a variety of reasons. And often the carburetor requires maintenance. There are many reasons why drivers are forced to constantly adjust this mechanism.
How to care for a carburetor
Items that are used continuously do not generally require regular cleaning. The need for this process can arise only if the lever mechanisms, which disrupt the mobility of some parts, are heavily contaminated. They also engage in washing if there is a repair of the Solex carburetor.
For cleaning, kerosene or white spirit is suitable. It is much better and more effective to use special drugs for these purposes. Many of them are also suitable for efficient cleaning of the internal parts of the device without the need for disassembly. It should be noted that it will be very difficult to remove old dirt from the channels.
For cleaning, it is necessary to remove the air filter cover and the element itself, wipe the internal cavity with a rag soaked in kerosene. After washing, it is best to close the neck with a clean rag. The subsequent installation of the Solex carburetor back into the car can cause beginners certain difficulties, so you need to work very carefully.
Engine troubleshooting
Some breakdowns can be resolved even without having to remove the carburetor. But at the same time it is necessary to observe cleanliness, which is very difficult to achieve under the hood. In addition, the device has a large number of small parts - they are very easy to lose. If there is a repair of the Solex carburetor, experts recommend not taking risks, but still remove it from the engine.
How to adjust fuel level
Before starting the setup process, it is important to check the position of the floats to each other and with respect to the walls of the float chamber. It is very convenient to check this position by means of a print of the mounting plane on the cover gasket.
The correct location of the floats is exactly in the center of the prints. Their lateral surfaces must be strictly parallel to the walls of the chamber. In order to change the position of the parts, it is necessary to bend their holders in the right direction. If you suddenly have damage to the gasket, you can get prints on a new one. To do this, the mounting plane is covered with waste oil, and the lid is pressed against the carburetor body.
The cover should take a horizontal position, the floats go up. The supporting surface of the bracket tab is perpendicular to the axis of the needle valve. If there are irregularities, then the problem can be easily fixed with pliers. If the supporting surface is deformed, the floats are removed and aligned. If the damage is serious, a replacement is required.
To adjust the fuel level, the cover is turned over so that the floats look up, and set it on a horizontal surface. The damper ball should be recessed into the valve needle as much as possible. It is important to control the gaps - they should be the same and approximately equal to 0.25 mm. In case of deviation by folding the holders, the clearance can be adjusted.
How to check the needle valve
To do this, remove the instrument cover. As carefully as possible so as not to damage the floats, the lid is placed on a horizontal surface. Next, a piece of hose is put on the fitting. After that, closing the fuel-return element as tight as possible, create a vacuum in the hose with a pear.
Remkomplekt carburetor Solex
In most cases, pliers are enough to repair the mechanism. But there are more serious breakdowns, where one plier will not be enough. If it is necessary to replace parts, special kits can be purchased at the car dealership, which include all frequently breaking carburetor parts.
In the repair kit, the car enthusiast will be able to find Solex carburetor jets, sprayers for the accelerator pump, gaskets, a retracting spring, and a filter. Also included is a needle valve and rubber seals. Today there are a lot of counterfeit products. In the automotive markets there are a lot of parts from the Middle Kingdom. It should be extremely careful when choosing and buying the necessary items for repair.
All those who purchased the Solex carburetor Chinese repair kit were very unhappy with the quality of the parts. In addition, the Chinese brothers do not always report everything that is needed in the kit.
How to replace parts?
If the repair kit turned out to be of high quality, and the carburetor is disassembled and ready for repair, then the first thing to do is to replace the jets responsible for the uniform supply of fuel to the combustion chamber. It is better to spin the jets of the Solex carburetor by hand without unnecessary effort. Then change the air elements.
The fuel boost can not be changed at all. But cleaning it is recommended. Separately, attention should be paid to the fuel filter - it must be thoroughly rinsed and purged with compressed air. Often an element rarely becomes unusable, so these actions are quite enough. In extreme cases, it can always be replaced. Such minor repairs (the Solex-21083 carburetor is no exception) can be done with your own hands without the need for a trip to the service station or to specialists.
How to choose the right jets yourself
These are special parts that have holes for calibration. Through them, fuel and air are dosed. Distinguish between air and fuel jets. These parts, like no other, affect the appetites of the engine.
At the Solex carburetor, the selection of jets can be done with your own hands. Correct action changes the engine to smoother and more stable. At the same time, you can save up to 35% of fuel in the city. The first step is to choose fuel cells, and then you can go on to the selection of air. Of great importance in the choice is the engine size. For large motors, it is recommended to use jets with a small cross section.
For a more accurate and correct choice, there are special tables that show the optimal ratio of fuel and air jets. It also predicts a mixture and how the car will behave.
It is very important to choose jets, but it is even more important to purchase them. If you buy jets for a Solex carburetor, the price is affordable (200 rubles), but finding the right option is not easy. It is important to know what is hidden behind the numbers. It often happens when on the surface of parts not one, but two designations. For example, numbers. The first corresponds to the diameter, and the second speaks of performance. For air jets, numbers indicate throughput.
With proper maintenance and repair, this mechanism will last a very long time. And if a replacement is still needed, then the Solex carburetor price is quite affordable. For most car owners, such a device will cost up to a thousand rubles.