Vaz 2109 carburetor DIY repair

In detail: do-it-yourself vaz 2109 carburetor repair from a real master for the site my.housecope.com.

A carburetor such as Solex is installed on VAZ 2109 cars.
This article will discuss its possible malfunctions, and also provide instructions for disassembling, assembling the carburetor, as well as for adjusting it.

How to repair Solex with your own hands?
Solex carburetor repair:

What are the signs of a malfunctioning carburetor:

The engine runs intermittently;
The engine does not idle;
The car does not have the required traction;
Increased fuel consumption or smoke emissions;
The engine will not start at all.

If the above reasons were found, then it is necessary to clean and adjust the carburetor.

Advice! With the issue of adjusting the carburetor, it is highly advisable to contact a specialist at the service station, the price is not so high, but having received a guarantee of good carburetor performance.

On a VAZ 2109, carburetor repair is associated with cleaning the main elements. There is also the possibility of replacing some parts of the carburetor.

Note! Before starting repairs, be sure to stock up on a carburetor repair kit. This is done to speed things up in case of malfunctions.
This kit usually includes gaskets, jets and diaphragms.

To carry out repairs with your own hands, you will need a tool: wrenches, screwdrivers, flushing (gasoline, acetone), a flushing container, a clean rag. After all the preparatory work has been completed, you can begin to remove the carburetor.

Removal of the carburetor takes place in the following order:

Disconnect the air filter from the carburetor. Unscrew the nuts of its fastening, also remove the branch pipes.
Then it is necessary to remove the accelerator rod, and also to disconnect the choke cable.
After that, use the key to unscrew the carburetor mounts from the intake manifold.

Video (click to play).

Advice! Be careful when removing the carburetor. Small nuts and washers can get into the carburetor and intake manifold. This will provide additional difficulties.

The first step on the previously removed carburetor is to remove the solenoid valve. The fuel jet must be removed from this valve.
The next step is to remove the carburetor cover. It is fastened with 5 screws for a Phillips screwdriver.
The cover must be removed carefully enough to avoid damaging the float.
Remove the fuel float. Nothing complicated - we simply squeeze out the mounting axis with something thin and it is removed.

Removing the gasket. It is recommended to change the gaskets.
You should look at the trace on the gasket - if it is uniform, then everything is in order. If the trail from the body is interrupted, then the planes of the carburetor and the cover do not match.
Lapping of the cover to the body is required.
The next thing is to remove the fuel valve. It is advisable to do this with a spanner or a head - less likely to lick the edges.
Check the valve for functionality. The needle moves without jamming, there is no lateral play, the ball moves easily - these are signs of a working valve.
If one of the points falls out, it is necessary to replace the fuel valve.
Checking the trigger and diaphragm. The spring is not very elongated, the diaphragm is intact and elastic, there is no mechanical damage.
Remove the fuel filter located on the side of the carburetor.
Accelerator pump sprayers. They just pop out. It is advisable to replace the rubber bands and nozzles (if necessary).
We replace the diaphragm of the accelerating pump. We unscrew the screws, remove the cover, diaphragm and spring.
We unscrew two emulsion tubes.
Fuel jets are located under the pipes. They also need to be removed.Use a screwdriver.

We examined the carburetor VAZ 2109 - repair, or rather, disassembly is not difficult. Next, you need to clean the parts with your own hands and replace some parts if necessary.

After the VAZ 2109 carburetor has been disassembled, it is necessary to rinse some parts in acetone or gasoline. If a decision is made to change parts, then, accordingly, the old ones can simply be thrown away.
If they are left, then washing and cleaning with your own hands will ensure a better quality of the carburetor in the future, and it will also leave for a longer period before the next repair. On a VAZ 2109, the carburetor requires careful repair - and cleaning, of course, too.
List of things to soak in kerosene:

solenoid valve jet;
fuel valve;
fuel filter;
accelerator pump sprayers;
accelerator pump cover;
main fuel jets;
emulsion tubes.

After flushing, all parts must also be blown out with compressed air. It is very convenient to do this with a compressor.

Advice! When blowing out parts, hold or pinch them firmly. Since most of the carburetor components are small, it is easy to lose them, but very difficult to find them.

Usually the assembly process is the reverse of the disassembly process. But to avoid any confusion, a detailed list of works in the sequence for assembling the VAZ 2109 carburetor is provided.
So:

Installing the fuel filter. Either new or a well-cleaned old one. Install the plug.
Place the float in the chamber. Be sure to check the float for integrity.
Immerse it in a container with fuel for a couple of minutes and, if there is gasoline in the float, it should be replaced. Change the gasket if necessary.
Replacement of all diaphragms.
Assembling the accelerator pump, fuel pump, economizer.
Solenoid valve. Performance check - connect it to the battery.
Plus for the valve terminal, minus for the body. The needle should retract. If not, change to a new one.
Installation of emulsion tubes.
The last thing is to put back the carburetor cover.
Note. After washing and assembling the carburetor, it is advisable to blow out the carburetor assembly with compressed air. A control shot, so to speak.

The installation process is straightforward, but there are a few details to pay attention to. When installing the carburetor to the intake manifold, pay attention to whether the housing is flat.
In simple terms, is it flat or has undergone deformation. You can check this using a rule or a level, for example.
If there is a deformation, then it is necessary to grind the carburetor on the grindstone.
After lapping, the carburetor is installed, the suction and accelerator cables, fuel supply pipes and others are connected. Then the air filter is installed.

Advice. If the carburetor is to be adjusted, do not replace the air filter immediately. Install it after adjustment for more convenience.

As mentioned earlier, in order to adjust the carburetor normally, you need to contact a good specialist. To do this, you need to go to the service station.
Well, I want to go more or less normally. Therefore, at least the idle speed and the amount of the mixture can be adjusted.
After adjustment, the engine will run relatively normally. The adjustment is carried out according to the user's manual (book with the device of the VAZ 2109 car) or "by eye".
In the second variant, it is necessary to set it so that the idle speed is within the range of up to 1000 rpm, and when the gas pedal is pressed, the car does not "stupid", but quickly picks up speed. Adjustment is carried out by screws for fuel quality and idle speed.

This article describes in detail how to sort out a VAZ 2109 carburetor with your own hands.In the process of repairing a carburetor, be sure to also be guided by books on the device and repair of a car, and you can also watch a video with a visual description of the disassembly and adjustment process.

The process of repairing a carburetor on a VAZ 2109 includes several stages:

Removal;
Disassembly;
Stripping;
Assembly;
Installation;
The adjustment is preliminary.

We will tell you more about each of them, but first we will note the typical symptoms of a malfunction of this unit.

The carburetor can malfunction over time or as a result of rough use. It is not difficult to determine this by the behavior of the car, even for an inexperienced driver. You just need to know the characteristic symptoms of malfunctions. These include:

Interruptions in the operation of the motor;
The inability of the engine to keep idling;
Lack of necessary traction;
Increased fuel consumption;
Excessive emission of smoke;
The engine simply won't start.

If such signs were found, then you need to repair the carburetor on the VAZ 21099. You can do this yourself, but it is better to contact the specialists at the service station. The cost of repairs will be small, but you are guaranteed to receive high quality service.

Many car owners think what kind of carburetor it is better for them to put on their VAZ 21093. Today the Solex carburetor is relevant, which effectively copes with its task, therefore it is installed on this car.

It is not difficult to understand the structure of the carburetor on the VAZ 2109, just like perform each stage of the repair yourself.

The first step is withdrawal. This can be done as follows:

Disconnect the air filter, unscrew the fastening nuts and dismantle the pipes;
Remove the accelerator rod and disconnect the choke cable;
Using a wrench, unscrew the carburetor and intake manifold mountings;
Make sure that small parts and nuts do not get there, otherwise you yourself will complicate the task.

Now you need to disassemble the carburetor on your VAZ 2109. Here the instructions are as follows:

This is how the carburetor is removed on the VAZ 2109. Having done this, proceed to the next stage.

Get a repair kit for the VAZ 2109 carburetor in advance so that all the elements to be replaced do not have to be looked for during the repair process. You will also need acetone or kerosene. They will be useful for the main stage of the repair - flushing.

The following carburetor components must be flushed:

Fuel valve;
Jets;
Sprayers;
Accelerating pump cover;
Fuel main jets;
Emulsion tubes.

Carburetor cleaner

When finished rinsing, be sure to dry and blow through the parts. When using the compressor for purging, hold the parts firmly. Due to their low weight, they are easily lost.

We have already described how to remove the carburetor on a VAZ 2109. Therefore, the assembly can be performed in the reverse order. But so that you do not have any problems, we will break this process into stages.

Install the fuel filter. Take a new one, or thoroughly clean the old one. Install the plug.
Secure the float. Make sure it is intact. To do this, simply place it in a container with fuel for a couple of minutes. If there is fuel inside, buy a new float.
Replace all diaphragms. It makes no sense to repair them.
Assemble the booster pump, fuel pump, and economizer.
Now it's the turn for the solenoid valve. Before installing it, check for operability. To do this, it is connected to a storage battery - with a plus to the valve terminal, and a minus to the body. If the needle retracts, then everything is fine. Otherwise, the spare part must be changed.
Install emulsion tubes.
Replace the carburetor cover.
It is also advisable to blow out the carburetor assembly itself. This will be a milestone that completes a high-quality self-assembly.

Installing the carburetor is quite simple, but it is important to pay attention to some of the nuances.

When mounting the unit to the intake manifold, make sure the housing is flat. It is about the evenness of the surface. It often turns out to be deformed. Arm yourself with a level to make sure of this.
If there is deformation, wipe it off with a sharpening stone.
After that, the carburetor is mounted, the suction cable, accelerator, fuel supply pipes and other elements are connected.
Then the air filter is installed.

Note that if you plan to adjust the carburetor later, then it makes no sense to mount the filter. The adjustment is carried out first, and only then can it be installed. So it will be easier and more convenient for you to work.

It is unlikely that disassembling the carburetor on the VAZ 2109 caused you many problems. But it is still better to entrust the adjustment to specialists. Therefore, visit a proven, reliable service station. Wizards perform the necessary settings, approach the issue professionally, and save you a lot of time. Best of all, today they don't charge a lot of money for adjusting carburetors. In this component, the owners of VAZ cars are generally good, since spare parts are cheap, and there are no problems with repairs.

Some decide on their own to adjust the idle speed and the amount of the mixture supplied. This will allow the motor to run more efficiently. For the VAZ 2109, a technical manual is provided, which indicates the nuances of self-performing such work. Therefore, be guided strictly by it.The engine of your VAZ 2109 car cannot develop full power or does not start at all? Has your fuel consumption increased? Does the car stall while driving? These and other malfunctions are signs that the car's carburetor needs tuning and adjustment. Timely completion of these operations reduces the likelihood that repairs may be required.The peculiarities of our climate and roads provoke a situation when the spark has disappeared and the engine will not start.The reasons for the missing spark are usually the following:

The switch is out of order;

Hall sensor functioning is incorrect;

The ignition coil is out of order;

The contacts are oxidized or dirty;

There was a breakdown of the high-voltage wire;

The operation of the ignition lock is broken, repair is needed.

There is another reason, the consequence of which is the situation that the spark has disappeared - the spark plugs, or rather the contacts, have become black from carbon deposits. The spark may disappear if the ignition timing at the carburetor is not set correctly. There may be more reasons why the spark disappears and the engine does not start, you need to check the carburetor for malfunctions and, if necessary, carry out repairs.This is the next common question that car enthusiasts face. Fills candles on both carburetor and injection vehicles. Most often floods candles in winter. Causes of the malfunction:

In order to mix the working mixture in the winter, more effort is required, however, in new cars, candles are usually not flooded. A fully charged battery of appropriate power, a working starter, and high-quality oil will help reduce the likelihood that the candles will be flooded;

Engine wear;

The candles themselves with candle wires, they must be of high quality.

It is also a common problem that begins to manifest itself in a car after a significant mileage. To check, turn on the idle of the car, and then in turn the various mechanisms. If you see that the rpm is floating, then a solution to the problem is required. One of the causes of a malfunction may be a short circuit.Another problem is the idle speed has disappeared. As a rule, there are three reasons for this - clogged nozzle, burnout or lack of power supply to the solenoid valve. If idle is gone, check this first.Setting up the VAZ 2109 carburetor and adjusting it is quite easy and solves many of the above problems, including reducing fuel consumption, but when contacting a car repair shop it will cost a significant amount of money. It is more convenient to carry out the work with an assistant, this will reduce the time consumption. No special tools or equipment is required. If repairs are required, it is better not to deal with them on their own, but to contact specialists.In order for the repair of the carburetor to be required as rarely as possible, you need to use high-quality fuel for the car.Lubricate quality screws, choke cables regularly. The cables still need regular replacement.

Provide the room in which the adjustment will be carried out with constant access to fresh air;

The car must be installed strictly horizontally;

Rags cannot be used during work, as they leave villi, prepare another material;

Keep a flat head screwdriver handy;

Prepare special means for cleaning, as a last resort, you can use gasoline, the best tool is compressed air.

Before proceeding directly to work, you need to clean the VAZ 2109 carburetor. Image - Vaz 2109 DIY carburetor repair

To do this, use compressed air, gasoline, special cleaning agents. A preliminary ignition adjustment is imperative. With the installed early or late ignition, it is pointless to adjust the carburetor.

It is necessary to carry out all work only when the engine has reached operating temperature, for this it starts up and idles for some time. Remove the throttle rod from the throttle valve. Disconnect the crankcase ventilation. Check that there is no vacuum in the advance regulator tube. The presence of a vacuum is a sign that something was done incorrectly. Adjust the quality screws.

Check the tension of the cable, there may be two options - excessive tension or insufficient;
Using a 13 key, adjust the cable tension;
Carry out a check: when the gas pedal is depressed, the damper must be fully open, when the pedal is released, it must be closed;
Using a 13 wrench, adjust the position of the lock nut so that the result is optimal.

Next comes the turn of the air damper:

It is necessary to remove the cover from the air filter;
Replace the filter if necessary;
Check: if the choke handle is completely recessed, then the damper should be under the torpedo and be completely open;
Turn the choke lever until it is fully open;
Sink the lever until it stops;
Remove the cable from the insulation and press down the draft adjustment bolt;
Check the damper again;
If necessary, gradually advance the sheath of the cable, tighten the fastening bolt;
If the desired result is achieved, tighten the bolt to the lever and close the filter cover.

The next step is the launcher. It can be adjusted without removing the carburetor and with removal. If it is not possible to remove the carburetor, a tachometer is needed. Remove the air filter housing and pull out the choke lever completely. The lever is located under the torpedo in the cabin. Start the engine and watch what happens.

Open the air one third using a flat head screwdriver. Using a 7 key, unscrew the adjustment bolt until you reach a tachometer reading of 3100-3400 rpm. When the result is achieved, lower the flap.

Next, we adjust the idle speed of the carburetor:

Charge the battery;
Warm up the engine to operating temperature;
Turn on your headlights, audio system and other items that consume electrical energy;
Achieve maximum idle speed;
Turning the quality screw, reduce the speed by 50-150.

Remember that if the carburetor is regularly cleaned and adjusted, it will work for a long time, no repairs or replacement is required, and it will also reduce fuel consumption.

The fastest way to set up the Solex carburetor is by following the instructions.Setting up the Solex carburetor begins with setting the correct level in the float chambers:

Start the engine, turn it off after 3-4 minutes;
It is necessary to remove the air filter;
Disconnect the fuel hose;
Carefully unscrew 5 bolts, remove the Solex carburetor cover;
Measure the distance from the edge of the body to the fuel level, it should be 25.5 mm;
If a discrepancy is found, bend the tongue of the float bracket;
Check the parallelism of the edges of the floats on the mating surface of the cover;
Adjust by acting on the float brackets.

Next, we carry out the adjustment of the starting device. To do this, you will need to remove the carburetor. Check the diaphragm on the trigger. To access the diaphragm, you need to unscrew 4 bolts and remove the cover. If the diaphragm is found to be defective, it must be replaced. The adjustment is carried out in the following sequence:

Close the choke by turning the lever;
Sink the trigger stem;
Measure the gaps, if you find discrepancies with the data, continue further;
Loosen the lock nut, turn the adjusting screw;
Measure the throttle valve clearance, it must match the data, achieve compliance with the adjusting screw.

Then you need to adjust the idle speed. Correctly set idle speed ensures stable engine operation. The adjustment is carried out provided that the carburetor and air filter are installed, the engine is warmed up to operating temperature. It will be more convenient to use a tachometer and a gas analyzer in operation. So:

Before the engine warms up, tighten the quality screw all the way, then loosen it by 3-4 turns;
Start the engine, remove the suction, turn on the headlights and fan;
Set the revolutions by the amount screw to the value 750-800;
Next, set the maximum speed with the quality screw;
Then set the rpm to 900;
Further 800;
Tighten the quality screw until you achieve an unstable speed, then unscrew it one turn;
Use the quantity screw to set the revolutions depending on the season. For summer, 800-900 is best, for winter 900-1000.

A situation may occur that the engine does not react in any way to the adjustment of the quantity screw. This suggests that the idle jet needs to be changed to a smaller one. The second option is to tighten the solenoid valve. Finding the right jet for your Solex carburetor is a daunting task. The displacement of the engine can become a guideline. A larger volume requires a smaller jet.

The reason that the Solex carburetor stalls is precisely the jet.

A clogged nozzle can cause the idle to disappear.

Its competent setting will reduce fuel consumption and increase engine power.

It is not recommended to replace the Solex carburetor jets on your own, as well as to repair it. Installing the wrong one will cause the opposite result - fuel consumption will increase, power will decrease and dynamics will decrease.

Most of the VAZ cars of the Samara family, and in particular the VAZ-2109, came off the assembly line with a carburetor power system, and only later a small series received injectors. The carburetor system has a simple design and is quite reliable, but its main component, the carburetor, requires periodic adjustment. VAZ-2109 and other models of the family were equipped with Solex carburetors, which are distinguished by a relatively simple adjustment technology that can be performed by every motorist.There are two main carburetor settings - the fuel level in the float chambers and the engine idle speed (XX). These adjustments are carried out with the instability of the engine idling and even with the manifestation of certain symptoms of improper operation of the power system:

The motor does not start well.

The dynamics of acceleration has decreased.

Dips appeared with an intensive set of speed.

These problems indicate that the fuel level in the chamber is abnormal.Adjusting the amount of fuel in the chambers of Solex carburetors is a simple procedure and does not require specialized equipment. Although in the factory, this adjustment is performed using a special template, which simplifies and speeds up the work. But at home, you can do without this template.
For self-adjustment work you need:

screwdrivers (Phillips, flat);

a ruler (better than a vernier caliper);

a round bar with a diameter of 2 mm (a wire or drill is suitable).

With this equipment, you can quickly complete all work.Level control technology includes a number of steps:

Dismantle the housing of the air filter element. To do this, unscrew the fastening nut of the housing cover, unscrew the latches, remove the cover, take out the filter and twist 4 nuts that fix the housing to the carburetor.

Lift the case, detach the rubber pipes. We remove the body to the side.

We loosen the clamps for fastening the fuel pipes suitable for the carburetor and disconnect them.

Remove the wire suitable for the idle solenoid valve;

Disconnect the air damper drive cable (“choke” handle);

Unscrew 5 screws securing the carburetor cover;

Having dismantled the cover, we immediately determine the fuel level in the chambers by lowering a ruler or vernier caliper into one of them until it stops (using its depth gauge). If the measurement shows a level of 25-26 mm, it corresponds to the norm and adjustment is not required;

In the case when the amount of fuel in the chamber is below or above the norm, we carry out a visual inspection and a series of measurements on the floats, if necessary, we correct their position.

To carry out adjustment work, put the removed carburetor cover on a flat horizontal surface with the floats up.

First, we look from above at the position of the elements. The outer side surfaces of the floats are parallel to the special imprints on the gasket. Deviations can cause the floats to come into contact with adjacent elements and surfaces, as a result of which the fuel level is not correct. If necessary, we adjust the position of the floats by bending their attachment levers.
The next step is to measure the gap between the floats and the gasket. A rod with a diameter of 2 mm will come in handy here - this should be the specified gap.

If it does not correspond, we bend the tongue of the floats, with which they act on the shut-off needle. After this adjustment, we check the total height of the floats, which is normally 34 mm. If this is not the case, check the gap again, correct it if necessary and measure the height again.

The last stage of the setup is to define the working stroke of the floats. To do this, we put a caliper near the float, mark the distance from its lower corner to the surface of the lid, then raise the float with our hand and mark where the lower corner is.

A working stroke of 15 mm is considered normal, if it is different, it is adjustable by bending the tongue.

There is an easier method for determining the correct position of the floats, which does not require measurements.
Place the carburetor cover on a flat table and look at the punches made on the side surfaces. When the floats are in the normal position, these strips are parallel to the cover.

Then we lift the floats up and look at their bottom, which, after lifting, should be located parallel to the surface of the lid. If necessary, we correct the position of the floats by bending the tongue.

After adjustment work, we assemble the carburetor.

The second setting of the VAZ-2109 carburetor is idle speed, it can be partial and full. The first is for minor adjustments to the rpm, the second is with air volume control (setting of CO emissions in exhaust gases).

Partial adjustments are made with the air-fuel ratio screw.This screw sets the opening angle of the throttle valves, which ensures the flow of the air-fuel mixture into the cylinders when the accelerator pedal is released. The "quantity" screw rests against the throttle valve control lever and when screwed in, it pushes the lever, which causes the valves to open slightly.

Partial idle adjustment is performed on a warm engine and with the creation of a load on the on-board network of the car, by turning on the high beam headlights and the interior heater at full power.
The adjustment is carried out on the running engine by screwing in / out the "quantity" screw until the optimum idle speed is established, which for the VAZ-2109 is 800-900 rpm (this can be tracked by the standard or connected tachometer).

If it is not possible to set the required revolutions or the motor is unstable at them, a complete adjustment is carried out, which is carried out by two screws - "quantity" and "quality".

The algorithm for this adjustment consists of the following stages:

We warm up the engine, then turn off;
We find the quality screw (it can be closed with a plug that will have to be removed), turn it all the way, and then unscrew it by 3-4 full turns;
We start the engine, turn on the electrical consumers (lighting and stove) in order to create a load in the on-board network;
Rotating the “quantity” screw, we achieve 700-800 rpm on the tachometer;
Turning the “quality” screw, set the maximum possible revolutions (they will increase to a certain level, and then they will stop. The moment of stopping the increase in revolutions is considered the maximum);
We expose with the screw the "quantity" 900 rpm;
Using the "quality" screw, we lower them to 800 rpm;
Slowly turn the "quality" screw until the power plant malfunctions, after which we turn it back 1 turn;
We correct the revolutions with the "quantity" screw, bringing them to the normal level - 800-900 rpm;

After adjusting operations, we check the correctness of their implementation. This is done by abruptly pressing the gas pedal followed by a quick release. With a properly tuned carburetor, the engine should respond quickly to pressing, without any dips or hiccups. And after releasing the pedal, the revolutions will decrease to the idle level, without subsidence or manifestation of instability of the motor.

Carburetor bodies. This is the very bottom of our carburetor. She is responsible for supplying air to the idle system, for supplying fuel, for mixing the mixture, etc. I think in this picture you yourself will understand everything: Image - Vaz 2109 DIY carburetor repair

Carburetor cover VAZ 2109. On the cover there are: symmetrical float, econostat jet, idle air jets, etc. See the rest in the picture below:

Image - Vaz 2109 do-it-yourself carburetor repair

Carburetor heating block;

Throttle valve of the first chamber;

Branch pipe for suction of crankcase gases;

Accelerator pump drive lever;

Accelerating pump drive cam;

Accelerating pump diaphragm;

Fuel jet of the econostat of power modes;

Econostat diaphragm of power modes;

Shut-off solenoid valve;

Idling fuel jet;

The main air jet of the first chamber;

Accelerating pump sprayers with fuel supply valve;

The diaphragm of the starting device;

Trigger adjusting screw;

Idling mixture amount adjusting screw;

Second chamber lock lever;

A branch pipe for supplying a vacuum to the vacuum regulator of the ignition distributor;

Idling mixture quality adjusting screw;

Throttle control sector;

Throttle valve drive lever;

Adjusting screw for opening the throttle valve of the first chamber;

Air flap control lever;

Starter rod;

Electric wire of the limit switch of the forced idle econostat;

The main air jet of the second chamber;

Sprayer of the main dosing system of the second chamber;

Fuel drain pipe to the tank (return line);

Throttle valve of the second chamber;

Second chamber throttle lever;

The main fuel jet of the second chamber;

Second chamber throttle actuator;

Repair of a VAZ 2109 carburetor is a set of measures that will help restore the functionality of not only the carburetor itself, but also the entire engine unit. Almost any repair on the nine will be reduced to cleaning or replacing parts, so you need to know how to do it correctly and when. The design of the carburetor is quite simple, so you can repair it yourself.

Carburetor repair is a very important procedure, so you need to know exactly when to deal with the knot. The nine have problems with the carburetor as follows:

engine power drops significantly, it can stall;
the car jerks at the start;
the engine runs very poorly at idle;
when accelerating and changing gears, extraneous sounds are heard, jerks occur;
increased fuel consumption;
the amount of smoke in the exhaust system is greatly increased.

Of course, not all signs appear immediately, they usually occur one at a time. As soon as the condition of the node worsens, you should expect other problems. First of all, you need to pay attention to the engine speed, the amount of fuel consumed.

For example, if the fuel consumption increases, it means that a problem arises when creating an air-fuel mixture, a failure occurs in the cycles of supplying substances. The valve could be clogged, leaks, etc. In such cases, you will have to disassemble the part and thoroughly clean it from carbon deposits and other working waste.

Occasionally it happens that the carburetor overflows: the liquid flows out of it, falling into the cavity between the parts, while the car jerks or simply stalls in place. It is possible to fix the problem in the garage, but if it happens on the road, the car will stop and, most likely, you will have to call a tow truck.

Occasionally, car malfunctions, which lead to the need to repair the carburetor, occur due to the replacement of parts. Incorrectly installed parts can also cause performance problems.

So, if one of the described problems occurs, first of all you need to do the following:

Conduct an initial inspection of the system of hoses and cables, visually assess the condition of the unit.

Change the brand of fuel (quite often low-quality fuel leads to a blockage of the fuel line).

Clean the assembly.

Inspect newly installed parts.

Back to the table of contentsTo completely clean the entire carburetor, it will not only have to be removed, but also disassembled. Experienced users will put the part back together without any problems, but those who have not been involved in such work can make several serious mistakes. Here are a couple of tips on what to do before disassembling the device:

Unscrew all fasteners (including inside the carburetor) only if absolutely necessary. In particular, do not touch the damper mount. Incorrect reassembly of these parts, displacement and movement will lead to jamming of the mechanism, as a result - several new problems.

Do not pull out diffusers that are located in air ducts.

Do not dismantle brass tubes unnecessarily.

Also, do not remove the union and the economizer valve. Every part that is misaligned or installed incorrectly will cause the carburetor to stop working altogether.

A very important point! The throttle adjustment screw of the second chamber has a protective cap, it does not need to be removed, and the screw itself should not be touched. Otherwise, the factory settings of the mechanism will be changed, which may lead to serious failures in the operation of the entire assembly. Without a special tool, the starting position of the flap cannot be returned.If you plan to carry out a complete disassembly of the unit, then this must be done very carefully, slowly, using the manual for the car.In cases where it is enough to clean the external part of the device, it is better to limit yourself to this, otherwise you will then have to take the car for a comprehensive repair to the nearest service station. The most detailed description of working with Solex is in the publication "Solex Carburetors" by Erokhov. It is recommended to use it in the first place, since many small nuances are described there.