If your “nine” has become difficult to gain speed, twitch and swing, this indicates problems with the carburetor. Most likely, it requires adjustment. After all, it is the carburetor that helps the engine run stably.
Adjusting the VAZ 2109 carburetor is the first step to eliminate the above idle problems. As experience shows, such an operation may well be sufficient. In this case, any motorist can make most adjustments on their own. If you did not have to do such operations before, you should prepare for this.
First, study the section on carburetors in the VAZ 2109 repair book.
Secondly, prepare everything necessary for the work. This is necessary so as not to waste time looking for the necessary tool or accidentally dropped parts.
When working with a carburetor, it is best to use a table with a clean, light-colored cloth, a folding table or other flat surface. It is advisable to put it on your right. For adjustment, wrenches or heads, a screwdriver, rags and pliers are required. A car compressor with a nozzle for blowing and a vacuum cleaner will be useful. The repair manual is best disclosed on the carburetor description page and positioned so that you can occasionally look in there.
Adjusting the carburetor VAZ 2109 for example 99
This article talks about simple carburetor adjustments that do not require removal from the car, unlike a gasoline pump. The locations of components and parts are described based on the fact that you are facing the windshield. It is important that adjustments are made on an engine that has previously been warmed up to operating temperature.
It is important to proceed from the fact that working with a carburetor requires utmost purity and accuracy. After all, a speck of dust in the nozzle is enough for it to begin to "junk." It is better to carefully wipe the carburetor body and car parts around it before starting adjustment. It is also advisable to clean and rinse the nozzles and emulsion tubes of the carburetor with gasoline. Then blow it all with compressed air.
For ease of access to the carburetor, the air filter is best removed. To do this, unscrew the nut holding the air filter cover. Carefully remove the filter. Its body is pressed against the carburetor with a metal plate and fastened with four nuts. Before unscrewing, plug the carburetor diffusers with a clean cloth. This will prevent fasteners and dirt from accidentally getting into the engine and carburetor.
Adjustment of the carburetor on the VAZ 2110:
Better to start with throttle and air flaps.
The need to adjust the throttle is determined by the tension of the cable of its drive. The drive must be adjusted both with excessive cable tension and when it sags. Care must be taken to ensure that the shutter is not completely closed. For this, the tip nut on the plastic sheath of the cable should be gently clamped with a key. Carefully loosen the lock nut at the same time. Keep in mind that with a free "gas" pedal, the damper has a clearance. If you press the pedal all the way. it fully opens. After loosening the locknut, adjust the correct cable tension and lock it.
After checking the degree of opening of the air damper, a decision is made on the need to adjust its drive. This flap opens fully when the handle of its drive on the dashboard is pushed fully. Otherwise, as well as other malfunctions, the state of the draft is checked first. To do this, loosen the bolt that secures the rod. Then turn the drive lever, fully opening the shutter. Slide the choke control handle all the way. Having pulled out a cable of a drive, to tighten a bolt again. With the actuator handle extended, check the position of the shutter. If it is open, loosen the bolt and adjust the traction. In this way, the actuator must be adjusted until the damper fully opens and closes. It is important that the lever, regardless of its position, does not touch the "shirt" of the traction.
Thus, after the jets are cleaned and the flaps are functioning properly, you can take on the idle speed adjustment. This adjustment is crucial to ensure engine uptime and fuel economy.
It is carried out by two screws, which are located below the carburetor from its left side. One regulates the quality of the air-fuel mixture, the other. the number of idle speeds. The first is designed for a screwdriver, the second. you can rotate it.
Adjustment of the carburetor on the example of the VAZ 2107 (the principle is the same as on 2109):
Several consecutive stages of this work are supposed here.
2). Now we need to ensure that the tachometer shows 800 rpm. If the number of revolutions is greater, the idle screw must be rotated gradually. Stop when the processes do not reach this indicator or are slightly less than it.
3). The next operation is aimed at adjusting the air-fuel mixture entering the engine. This is directly related to the fuel consumption of the car. To do this, screw the “quality” screw back in slowly using a screwdriver. First, make the engine run stably. Then tighten it a bit so that the motor works unevenly. This is a sign that the air-fuel mixture entering the cylinders is lean. The more the quality screw is screwed, the poorer it is. Then you need the engine to run smoothly and economically. To do this, gradually you need to unscrew the "quality" screw and listen to the sound of the motor. Unscrew the stop as soon as it starts to run smoothly. This shows that a balance has been reached. The mixture has become maximally depleted during stable operation of the engine.
If there are doubts about the correct adjustment, just compare the sound of the engine of your car with the sound of a working gasoline engine.
Next comes the stage of assessing the quality of the adjustment during the operation of the car. This should be done under various modes and in terms of gasoline consumed.
The adjustment of the VAZ 2109 carburetor is fundamentally the same as that of most other VAZ models. Therefore, the owners of such cars can safely use these tips.
Auto flow
How to properly configure a VAZ-2109 carburetor
The main number of VAZ cars of the Samara family, and in particular the VAZ-2109, came from the conveyor 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, characterized by a relatively simple adjustment technology that every motorist can perform.
There are two main carburetor settings. the fuel level in the float chambers and the engine idle speed (XX). These adjustments are carried out in case of unstable engine idling and even when certain symptoms of improper operation of the power system are manifested:
- Motor does not start well.
- The dynamics of speed gain decreased.
- There were failures with an intensive set of speed.
These problems indicate that the fuel level in the chamber is not normal.
Fuel level setting
Adjusting the amount of fuel in the Solex carburetor chambers is a simple procedure and does not require specialized equipment. Although in the factory this adjustment is performed using a special template that simplifies and speeds up the work. But at home, you can do without this template.
For independent adjustment work you need:
- screwdrivers (Phillips, flat);
- ruler (preferably a caliper);
- round bar with a diameter of 2 mm (wire or drill is suitable).
With this equipment, you can quickly complete all the work.
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Recommended Method
The level adjustment technology includes a number of stages:
- Dismantle the housing of the air filter element. To do this, unscrew the fixing nut of the housing cover, snap off the latches, remove the cover, remove the filter and twist the 4 nuts securing the housing to the carburetor.
- We lift the case, disconnect the rubber pipes. We remove the case to the side.
- Weaken the clamps securing the fuel pipes, suitable for the carburetor, and disconnect them.
- Remove the wire suitable for the idle solenoid valve;
- Disconnect the drive cable of the air damper (handle "suction");
- Unscrew 5 screws securing the carburetor cover;
- Having dismantled the cover, we immediately determine the fuel level in the chambers, dropping a ruler or 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 lower or higher than normal, we perform 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, look at the position of the elements from above. The outer side surfaces of the floats are parallel to the special prints on the gasket. Deviations can cause floats to touch adjacent elements and surfaces, which is why the fuel level is not normal. If necessary, adjust the position of the floats by bending their mounting levers.
The next step is to measure the gap between the floats and the gasket. A bar with a diameter of 2 mm is useful here. so much should be the specified gap.
If it does not match, bend the tongue of the floats with which they act on the locking needle. After this adjustment, we check the total height of the floats, which is normally 34 mm. If this is not so, check the gap again, if necessary, correct it and measure the height again.
The last setting step is to determine the stroke of the floats. To do this, put the caliper near the float, mark the distance from its lower corner to the surface of the lid, then raise the float with your hand and mark where the bottom corner is.
A normal stroke of 15 mm is considered normal; if it differs, it is adjustable by folding the tongue.
Alternative way
There is a simpler method for determining the correct position of the floats, which does not require measurements.
Put the carburetor lid on a flat table and look at the stampings made on the side surfaces. With a normally adjusted position of the floats, these strips are parallel to the cover.
Then we raise the floats up and look at their bottom, which after lifting should be parallel to the surface of the lid. If necessary, adjust the position of the floats by bending the tongue.
After adjustment, we collect the carburetor.
Idle adjustment
The second setting of the VAZ-2109 carburetor is idle speed, it can be partial and full. The first is for insignificant adjustment of revolutions, the second. with the adjustment of the amount of air (installation of CO emissions in exhaust gases).
Partial adjustment is performed using the “quantity” screw of the air-fuel mixture. This screw sets the opening angle of the throttle valves, which ensures the flow of air-fuel mixture into the cylinders with the accelerator pedal released. The “quantity” screw rests against the throttle control lever and when screwed in, it pushes the lever out, as a result of which the flaps open.
If it is not possible to establish the required speed or the motor is unstable on them, a full adjustment is made, which is done with two screws. “quantity” and “quality”.
The algorithm for this adjustment consists of the following steps:
- We warm up the engine, and then we turn off;
- We find the quality screw (it can be closed by a plug, which will have to be removed), wrap it all the way, and then unscrew it by 3-4 full turns;
- We start the engine, turn on electrical consumers (lighting and stove) to create a load in the on-board network;
- Rotating the “quantity” screw, we achieve 700-800 rpm on the tachometer;
- Rotating the “quality” screw we set the maximum possible speed (they will increase to a certain level, and afterwards they will stop. The moment of termination of the increase in speed is considered the maximum);
- We expose the “quantity” 900 rpm screw;
- Screw "quality" lower them to 800 rpm;
- Slowly wrap the “quality” screw until interruptions occur in the operation of the power plant, after which we turn it back 1 turn;
- We adjust the revolutions with the “quantity” screw, bringing them to the normal level. 800-900 rpm;
After adjusting operations, we verify the correctness of their conduct. 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 hitches. And after releasing the pedal, the speed will drop to the idle level, without subsidence or instability of the motor.
Video: HOW TO PROPERLY ADJUST THE FUEL LEVEL
Adjustment and tuning of the carburetor on the vaz 2109
Adjusting the VAZ 2109 carburetor is the most common vehicle maintenance procedure. Due to the complexity of the unit, it is considered the finest and most sensitive tuning of the car. It’s time to find out how to adjust the carburetor of the VAZ 2109 and repair.
Before cleaning and adjusting the carb, it is necessary to study the carb data. This is a table that has content in the form of technical specifications.
Symptoms of Solex carburetor malfunction
Before you adjust the carburetor on a VAZ 2109 car, you need to familiarize yourself with the associated malfunctions so as not to repair the unit for no reason.
So, the reason after which the VAZ 2109 carburetor is set up is considered:
-
Too rich fuel mixture. Experienced auto mechanics know that for an ideal fuel to air ratio, a value of 1 to 15 is needed. This means that for burning 1 kg of fuel, 15 kg of air is needed. If the mixture is called rich, it means that the fuel level exceeds the nominal.
Symptoms the engine does not start well, black smoke from the exhaust pipe, candles with black soot and lumbago in the exhaust system. The fuel supply system is quickly clogged.
The following signs can be called a consequence of the previous ones and this:
- Unstable idling;
- Increase fuel consumption;
- Deterioration of starting properties;
- Decreased engine throttle response.
The principle of operation of the carburetor and the fuel supply system forces car owners to perform such a procedure as adjusting the VAZ 2109 carburetor at least once every six months. The mechanism on a car with a carb needs to be lubricated once a month, in contrast to a car with injection, where there are nozzles. Everything is regulated very simply.
Reasons for the failure of the carburetor vaz 2109
Solex carburetor is a very sensitive device, which contains a large number of small channels. When passing through them a huge amount of low-quality fuel, you may encounter the fact that they become clogged with impurities and cease to function.
The first thing that can immediately become noticeable is a decrease in idle speed. In the future, the car starts poorly and needs to adjust the carburetor.
This procedure is divided into several stages:
- Unit removal
- Disassembly and cleaning
- Assembly and installation
- Carb idle setting
Removing, disassembling and cleaning the carburetor vaz 2109
If you find all of the above symptoms, you can begin to remove and disassemble the carburetor. On a VAZ 2109, Solex carburetor repair is possible using a repair kit. It is recommended that you purchase a repair kit in advance to immediately change all gaskets, jets, and valves. The table has data for nozzles and all necessary valves. The machine must be stationary. Analyzing the details, the most important thing is not to lose anything.
To remove and adjust the device, you must open the hood and disconnect all hoses from it. They are mounted on clamps, so it is recommended to stock up on a screwdriver in advance. The next stage is the cable for the gas pedal and air damper. Both elements are removed quite simply. After that, remove the chip from the idle economizer. Dismantling is carried out very carefully so as not to damage the contacts. Disassembling everything is even easier.
Recommended throughput of pneumatic economizer jets for various operating conditions
Now you can unscrew the four body nuts holding the carburetor on the intake manifold. If it is removed with difficulty, then you can pick it up with a thick screwdriver. Drive the collector with a rag to prevent foreign particles from entering and clean the landing site of the remnants of the old carburetor gasket.
The carburetor itself consists of several elements:
- Top cover
- Bottom cover and float chamber
- Throttle body
First of all, the top cover is removed. At the same time, the condition of the needle valve and the condition of the float are checked. The valve should move without jamming and also easily return to its original position. You can immediately check the operation of the accelerator pump drive. All connections should spin easily. The principle of operation of many mechanisms is very simple, but they should stand upright. It is configured after assembly.
Now you need to separate the throttle body from the bottom cover. Everything is held with bolts, so there will be enough screwdrivers. As soon as all components are completely disassembled, they must be treated with a throttle cleaner or regular gasoline. Wipe the parts with dry rags.
Particularly noteworthy are the jets. They must not only be cleaned, but also purged. The thing is that the jets have very thin channels that are easily clogged by foreign particles. Even one speck is enough to disable the entire node. To disassemble and assemble the carburetor is half the battle. Now you need to carefully install and configure everything. Hoses are connected without sealant.
If you have any questions, watch the video: