Fuel cleaning elements are necessary in order to power unit fuel was supplied, purified from various impurities and dirt present in the tank. The VAZ 2109 fuel filter (installed injector or carburetor) retains all these elements, resulting in a high-quality combustible mixture.
If the filter is clogged or of poor quality, the resins have a destructive effect on all engine systems, clogging pipelines and injectors. The presence of water in fuel contributes to the appearance of rust and damage to system elements, which will inevitably lead to breakdowns in the cylinder-piston group.
Dirt located in the channels along with water in the fuel, when low temperatures freezing can make it difficult to start the engine.
The condition of the fuel purifier largely depends on the external factors in which the car is operated, but to a greater extent on the quality of the fuel.
Experts advise carrying out this procedure more often than indicated in the documentation. This is due to the fact that the quality of gasoline or diesel fuel at our gas stations it is often quite low. Domestic fuel does not have ideal purification or ideal conditions for transportation and storage. As a consequence, an increase in the load on the engine and a decrease in its power, as well as a decrease in the resource of the fuel system.
Replacing a fuel filter, whether an injector or a carburetor is installed, is quite simple, and the filter itself is inexpensive, so do not forget to replace it on time. We will tell you in this article how to save money by installing it yourself.
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Replacement instructions with injector
According to schedule service work, on VAZ 2109 cars with an injector, the fuel cleaning element must be changed every 20,000 kilometers. But as we have already said, in our conditions it is better to halve this period.
What will you need?
Stages
All work must be carried out in a pit, overpass, or raise the car on a lift. The room should be well ventilated and should not be near open sources fire.
In a VAZ car with an injector, the fuel purifier is located under the car behind the fuel tank near the exhaust pipe.
Replacement instructions with carburetor
According to the regulations, the fuel cleaning element on a VAZ 2109 with a carburetor must be changed every 10 thousand kilometers, but taking into account the low quality of our gasoline, it is advisable to reduce this period to 7 thousand kilometers. The fuel filter is located under the main brake cylinder and secured with two clamps.
What will you need?
Stages
- Loosen the clamp located on the motor side.
- Remove the hose from the fuel cleaner. You need to be careful here because some gasoline may spill.
- Having loosened the clamp, remove the hose, which is located on the side of the tank.
- We put new filter. It is also important here that the arrow coincides with the direction of movement of the fuel. It should be directed towards the pump.
- We tighten the clamps.
- Next, you need to pump gasoline into the fuel cleaning element, because it is still dry. This must be done using fuel pump. By pressing the lever a couple of times, you will notice how the filter begins to fill with gasoline.
- We start the car and check for any gasoline leaks.
Safety precautions during replacement
- Smoking is strictly prohibited when working on the fuel system.
- There should be a fire extinguisher nearby.
- Be careful not to get fuel in your eyes.
- The room in which work takes place must be ventilated.
- Do not replace if it is too hot outside.
- Proceed with replacement only when the engine has completely cooled down.
As you can see, replacing a fuel filter is a fairly simple process that does not require special skills, and even an inexperienced driver can handle it after carefully studying the instructions.
For carburetor engines
(description of the procedure for replacing the air filter)
Replacing the air filter is included in the routine maintenance procedures for VAZ 2108, 2109, 21099 cars, as well as all other cars. If you do not go through these procedures, you should monitor the condition of the filter yourself, because... when it is heavily contaminated, engine power decreases, gasoline consumption and emissions increase. harmful products combustion into the atmosphere.
It is recommended to check the condition of the filter once every 10-15 thousand kilometers; if the car is operated in highly dusty conditions, then once every 5-10 thousand kilometers.
The filter replacement procedure is very simple. First of all, you need to remove the filter box cover by unscrewing the nut securing the filter cover and opening the three clamps around the perimeter of the box.
After this you should remove old filter and wipe the inside of the filter box housing with a dry cloth to remove any remaining dirt and dust.
Then you should install a new filter, close the box lid, tighten the nut and place the clamps around the perimeter of the filter box. New filter installed!
You can see how to replace the air filter in the video below:
For injection (injection) engines
Replacing the air filter on models of the Samara family with injection (injection) engine modifications is regulated and must be done at least every 20 thousand km.
Replacing the filter element is quite simple (the description is suitable for models VAZ 2108, 2109, 21099 and VAZ 2113, 2114, 2115). First of all, you need to remove the sensor mass flow air:
After unscrewing the fastening screws, lift the cover up. The filter itself will be located in its grooves:
Pay attention to how it is installed. If suddenly for some reason you did not pay attention to this, then on the bottom of the housing there is an indicator in which direction the filter element should be installed. We install a new filter in place of the old one...
...and screw the lid back on. Install the mass air flow sensor. It is necessary to insert the sensor into seat until it clicks.
We start the engine and check the operation. If its operation becomes unstable after installing a new filter, then the filter may be installed incorrectly. It is necessary to perform all the above operations again, only this time install the filter in the desired position.
The fuel filter is an element of the power supply system (fuel supply system) of the injection engine of VAZ 2108, 2109, 21099 cars.
Purpose of the fuel filter
The fuel filter in the power supply system of the injection engine of VAZ 2108, 2109, 21099 cars is designed to filter fuel (remove mechanical impurities) entering the main fuel line from the gas tank.
Location by car
The fuel filter on VAZ 2108, 2109, 21099 cars is located under the underbody, near the gas tank. It is built into the fuel supply line between the electric fuel pump in the gas tank and the fuel rail on the car engine.
Fuel filter device
The fuel filter consists of a metal housing with threaded fittings on both sides. Inside the filter there is a paper filter element that traps various foreign particles found in gasoline. From the fuel pump, fuel flows through a rubber hose to the filter inlet fitting.
Operating principle of the fuel filter
The electric fuel pump pumps gasoline from the fuel tank through a rubber hose to the inlet fitting of the fuel filter. In the filter housing, the filter element traps foreign particles present in gasoline. Next, the fuel flows through the filter outlet fitting into the metal tube of the main fuel line and then along it into the fuel rail with injectors on the engine. The direction of fuel flow is indicated by an arrow on the fuel filter housing.
Fuel filter malfunctions
— The main malfunction of the fuel filter is its reduction bandwidth due to clogging with foreign impurities present in gasoline. As a result, create required pressure fuel becomes problematic. There are jerks and dips in engine operation, unstable idling, the engine may stall both at idle and while moving, etc.
— In other cases, the fuel filter may, on the contrary, not filter out mechanical impurities in gasoline, but pass them into the fuel rail to the injectors. The occurrence of such a situation is possible due to its poor manufacturing or deformation from impact.
The frequency of replacing the fuel filter is 30,000 km. In some cases (continuous use low quality fuel, car with high mileage or not cleaned for a long time fuel tank and so on.)
Applicability fuel filters in the power supply systems of the injection engine of VAZ 2108, 2109, 21099 cars
In the power system injection engine VAZ 2108, 2109, 21099 cars are used fuel filters 2112-1107010-01 (02, 03, 04, 05) domestic production or their imported analogues (BOSH F0124, MANN WK612/5, Champion L240, ACDelco GF613, etc.)
The injection and carburetor power systems of the VAZ 2109-2108 are very different, so the procedure for replacing many parts may be radically different. The same applies to changing the air filter. Of course, all this is done very simply and there will be no difficulties with this service, but the order of the actions performed is different.
Firstly, it is worth noting that injection engine VAZ 2109-2108 in order to replace air filter, you only need a Phillips screwdriver; there is no need to have any other tools on hand.
So, open the hood of the car and disconnect the power plug from the mass air flow sensor:
Then unscrew the 4 bolts that secure it top cover casing:
After they are all unscrewed, you can lift the lid and remove the old filter from there:
After the old filter is removed, you must carefully wipe off the dust inside the housing, and only then install new element! Please note that the ribs should be directed in the direction of travel of the car, as clearly shown in the above photo.
Installation is carried out in reverse order and will not take more than 3 minutes. Remember to replace it at least once every 30,000 km, although in dusty conditions ( countryside), you can do this twice as often. Price for these Consumables quite low, so it’s not worth saving on this!
