Every car owner knows that in order to prolong the life of the power unit of the Lada Priora and any other car, it is necessary to promptly replace filters and engine oil, as well as other consumables. The fuel filter, as recommended by the manufacturer, should be replaced every 30 thousand km, but as experienced car owners advise, it is better to shorten this interval, since most cars are operated in difficult conditions, which include driving on dirt roads, the dust from which settles in machine components and low-quality fuel.
In this material, we invite you to study the information on how and when the fuel filter is replaced on the popular Lada Priora in our country, which has 16 valves. Below we will tell you where the filter we need is located, and how to change it yourself.
What is a filter for?
A fuel filter is installed in cars to protect the engine from various debris and water getting into it along with the fuel. Since there can be anything in the car’s tank, from rust to water. All this can appear in the tank when refueling at low-quality gas stations.
It consists of a housing and a filter paper part. This part allows fuel to pass through itself very well, but retains particles of dirt and water. You should never completely rely on the filter and it is best to refuel your car at reliable and proven gas stations.
Removing and disassembling the fuel pump
The fuel supply mechanism in the Priora is located in the gas tank, so to get it you need to:
- Remove the rear passenger seat. The latches holding it in place are on the sides.
- There is a hatch in the bottom of the car, secured with two self-tapping screws. Having removed it, we gain access to the fuel pump, which is fixed in the fuel tank with a flat metal ring.
- Remove the ring, which is held in place by nuts screwed onto eight threaded pins spaced evenly around the hole in the gas tank.
- We remove the two fuel hoses and remove the retaining ring.
- We disconnect the electrical connector through which power is supplied to the pump located in the plastic casing.
- We take out the housing; this must be done carefully so as not to damage the float, thanks to which the filling level of the gasoline tank is shown on the instrument panel.
- The next step is to pull out the pump itself, bend the four latches located on the body, and take out the fuel pump, at the bottom of which there is a coarse mesh.
As a rule, the entire mesh looks quite dirty, and its central part is literally clogged with various debris. To remove the old mesh, you just need to grab it on all sides with your fingers and pull it towards you, or pry it with a flat-head screwdriver.
It comes out of its seat relatively easily. After this we install a new mesh. A mesh for the Lada Priora fuel pump can be bought in a specialized store or on the market. It costs about 50 rubles .
There is usually also a lot of debris at the bottom of the plastic cup in which the pump was located. It needs to be rinsed well and wiped with a dry cloth.
Then everything is put together in reverse order. After replacing the mesh, the engine picks up speed smoothly and runs stably. While driving on the highway, the car no longer jerks and accelerates normally.
In most cars, fuel goes through two stages of purification - coarse and fine. This scheme is also implemented in the VAZ 2170 Lada Priora. At the first stage, the fuel passes through a metal mesh, at the second - through a paper filter in a sealed housing. Replacing these elements yourself is not very difficult.
Filter failure
It is recommended to check and replace the filter every 20 thousand km. Rapid contamination is facilitated by low-quality dirty fuel, which can completely clog the filter as a result of which it will stop passing gasoline, which will lead to the engine stopping.
When water appears in the car tank, there is a possibility that it will enter the filter element, which may result in the element becoming clogged. This happens especially often in winter. When the car is parked on the street, the water that gets into the filter freezes in it, blocking the fuel path to the engine. Which also leads to the engine stopping or the inability to start it.
Replacement instructions
Before starting this operation, it is necessary to perform decompression; this is a very important step and cannot be neglected. Decompression can be done in two ways. The first is to simply remove the fuse that controls the fuel pump. The second is to turn off the ignition, remove the fuel pump terminal, start the engine and wait until it stalls.
Since the location of the filter differs on different engine variants, there are two schemes for replacing it.
Replacement for injection engine
1. First of all, as mentioned above, it is necessary to perform decompression; 2. Next you need to disconnect the battery from ground; 3. This is followed by dismantling the air filter;
4. then you need to remove the fitting bolts and disconnect the hoses;
5. The next step is to remove the mounting bolt and dismantle the filter itself;
6. Now you need to carry out the above operations in reverse order with a new filter.
Fuel filter differences
The filters of front-wheel drive VAZ cars are practically the same. The only differences are in the fittings of the filter itself. On newer Lada cars, most often with a 1.6-liter engine, they began to install filters on plastic fittings.
Filter on plastic fittings
On older models, most often, such as VAZ 2109-2115 with 1.5 liter engines, filters were installed under a threaded fitting. That is, the tube fitting was screwed into the filter using threads.
Filter on threaded fittings
Of course, there are no differences in replacement, except that when working on cars with a 1.6 engine, fewer keys will be required.
When is the best time to replace an element?
Ideally, it is best not to wait until some malfunction appears that forces you to change the fuel fine cleaning element. Considering that the cost of the filter is low, and the replacement operation can be performed independently, you can set the interval to 10 thousand km. Signs that indicate the need for replacement:
- A situation often arises when, due to the fault of a clogged fine fuel filter, failures in engine operation occur, especially when accelerating the car. Sometimes the car may even stall, and starting the engine will then be difficult.
- The second sign of a clogged fuel filter can be increased noise from the electric fuel pump. When driving, this sound is almost impossible to hear, but when idling in the interior of the Lada Priora, you can hear a high-pitched buzzing sound. This indicates that the pump is operating under increased load; in normal mode, no extraneous sounds are heard.
If such signs appear, it is better to change the filter on the Priora, given that the cost of the issue is low. The fact is that a clogged element not only resists the flow of fuel, but also begins to let debris particles pass further along the path, into the injector nozzles. There, particles settle on work surfaces and form a film of dirt, which leads to their production.
After the first cleaning of the injector, the dirt film will disappear, but the wear on the surfaces will remain, and the injectors will simply begin to leak. Surely many Lada Priora owners have noticed a phenomenon when, after ultrasonic cleaning of the injector, engine performance became worse. This is the result of a long drive without replacing the fuel filter; now you will have to change the injectors as well.
Replacing the fuel filter
The first thing you need to do is relieve the residual pressure in the car's fuel system.
To do this, you will need to remove the fuel pump fuse (F3 - 15A). This fuse is located under the center console near the front passenger. We remove the fuse and start the car. The car will run until the remaining fuel is used up. After which the engine will stop.
Replacement process
Required tool:
- Open-end wrench set to “10”;
- Two open-end wrenches set to “17” (when replacing the filter on a car with a 1.5 liter engine);
- Rags;
Replacement:
- We find the fuel filter under the bottom of the car, remove the plastic fittings from it by pressing on the lock buttons and pull it away from the filter, the fitting will come out quite tightly.
- In 1.5 liter engines, the fitting must be unscrewed with two keys at “17”, positioning them as if they were scissors.
- On threaded fittings, it is necessary to check the condition of the O-rings and replace them if necessary.
- Next, using a “10” key, loosen the filter mounting clamp and remove it.
- Installing a new fuel filter
IMPORTANT The arrow on the filter must be directed towards the left wheel of the car in the direction of travel.
- Next, we assemble everything in reverse order.
Don't forget to put the fuel pump fuse back in.
We start the engine and check the tightness of the system.
The process of replacing the fuel filter of Lada cars is completed. Smooth roads everyone.
Where is the filter located on Priora and which one to choose
The fuel filter is located at the rear of the vehicle, above the rear beam next to the gas tank. It is supported on a special bracket. To replace the filter, you will first need to relieve the pressure in the system so that when you remove the filter, gasoline from the system does not spray you and everything around.
Which filter to choose
Depending on the year of manufacture, fuel filters with or without a latch were installed on the priors. A domestic filter from BIG is installed from the factory. If it is not possible to purchase it, there are analogues.
- Filter BIG-320BK without latch from 250 rub.
- Filter Poliston PT-320 with latch
- Filter BIG-3198 with latch
- Filter SCT ST 342 with latch
- Filter GUR-320BK with latch
All filters mentioned above are designed for a 1.6 liter engine. The choice of filter depends on the type of filter being installed, with or without a latch, as well as on your financial capabilities.
