The main reason that causes the need to replace the pump is the start of a leak in the cooling system. If the car owner discovers a leak, you can continue driving for some time, but it is better to limit it to driving to the nearest service station or to your own garage.
Typically the cause of pump failure is a broken bearing or seal. In such a situation, the damaged part must definitely be replaced with a new and serviceable one.
When to change
- While the engine is running, a characteristic low hum is heard from under the hood (this is a sign that the pump bearing is worn out and needs to be replaced).
- After leaving the parking lot, antifreeze stains remain on the asphalt, which indicates a violation of the pump's seal.
It is not advisable to repair the pump; it is much cheaper to purchase a new one and install it on the car. The operation is not an easy one: in order to change the pump, you will have to remove the above-mentioned timing belt . Read more about this below.
Signs of trouble
I would like to immediately note that in order to determine faults in the water pump, you will need to remove the unit and disassemble it. Only this method provides a real opportunity to see the resulting traces of corrosion, signs of cavitation and contamination.
Practice clearly shows that this happens on a wide variety of machines:
- VAZ 2107;
- Volkswagen Passat;
- FF2, that is, Ford Focus 2nd generation;
- Lada Granta;
- Kia Spectra;
- Chevrolet Aveo;
- Audi A5;
- Nissan Qashqai;
- Mitsubishi Outlander;
- Toyota Camry;
- Skoda Octavia, etc.
How to determine the need to replace your pump
A water pump can fail for two main reasons - wear of the bearing or oil seal. When the bearing wears out, a distinct hum will be heard, which is a sign that the bearing is humming and the pump needs to be replaced. If a pump with a faulty bearing is not replaced in time, this can lead to it jamming.
The second reason for pump malfunction is leakage from under the seal. If you notice that your antifreeze or antifreeze has begun to run out, one of the reasons is precisely the pump. Check for fluid leaks in the area where the pump is located.
If so, the pump is most likely leaking. In this case, operating the car is not advisable, but is possible provided that you have to constantly add coolant.
Another sign of a pump malfunction is a worn timing belt. If the bearing is broken, the pump may “walk” slightly, which will cause the belt to eat up, and as a result, the timing belt may break and then you will have to deal with the capital of the motor, since the valves will bend.
We recommend: How to drain antifreeze completely: from the engine block, radiator + photo instructions
Symptoms of malfunction
- Noise from the pump when the engine is running. Extraneous sound appears due to bearing wear. It is recommended to replace the cooling system pump after one or every replacement of the timing belt kit. If you neglect service intervals, wear appears on the rolling elements, inner and outer races, which leads to noise and whistling. Often the cause of accelerated wear is antifreeze, which, due to a leak in the oil seal or rubber cuff, gets to the rubbing vapors.
- Antifreeze leak. Like the pump bearing, the oil seal and rubber seal have a limited service life. The appearance of play due to bearing wear will significantly increase the risk of seal leakage.
- Misalignment with respect to timing gears and rollers (the pump becomes askew). Uneven tension distribution leads to accelerated wear of not only the bearing, but also the oil seal. Incorrect installation or a manufacturing defect, in which the pulley rotates misaligned, leads to accelerated wear of the loaded part of the belt. Such a defect, even with low mileage, can cause the timing belt to break and the valves to meet the pistons.
- Engine overheating. When the impeller blades break off, the pump's performance decreases, as a result of which less coolant passes through the small circulation circuit.
Often a decrease in performance is noticed after using a sealant to repair a radiator leak. The poured mixture clogs the cooling system channels and sticks to the pump impeller.
If the liquid has not clogged the coolant drain channel in the housing, then pouring sealant will not lead to a malfunction of the water pump. But you can’t do without removing the pump and flushing the system.
Replacement
You can replace the pump yourself; for this you will need: a 10mm socket, wire cutters, a screwdriver, a 6-corner bit, and a small ratchet.
- We drive the car onto the overpass, unscrew the crankcase and engine protection, thereby freeing access to the engine. Open the hood and unscrew the cap on the left side of the radiator and drain the antifreeze. If you plan to refill the same liquid, then place a bucket under the radiator.
- We look for a bolt on the front part of the cylinder block and unscrew it. We also drain the antifreeze from the engine into a bucket.
- We remove the plastic decorative trim on the engine; to do this, you just need to pull it up.
- We connect the ratchet with the bit and unscrew the bolts holding the front timing belt cover.
- We align the upper pulleys according to the marks on the rear timing belt cover.
- We unscrew the two timing belt tensioner rollers.
- Remove the belt and gear.
- We unscrew the two upper toothed pulleys and then pull them out.
- Using a 10mm socket, unscrew the 6 bolts on the rear cover of the timing gear drive and pull it out.
- Armed with a ratchet, unscrew the 3 screws securing the pump.
- Using a screwdriver, use a screwdriver to pry up the pump and remove it.
- We clean the pump seat from dirt and remnants of the old gasket with a dry cloth.
- On the new pump, lubricate the gasket seat with a small amount of sealant.
- We put on the gasket and also lubricate it.
- We install the pump on the engine so that the hole in its body looks down into the nearest hole to the filter.
- We tighten the bolts holding the pump.
- The pump has been replaced. We assemble all the parts in reverse order. Don't forget to add coolant.
Basic faults
The main reason for pump failure is bearing malfunction. The following malfunctions of this part can be identified:
- The bearing is jammed. If a whistle or hum appears on the right side of the engine when the engine is running, it is time to replace the pump. If there is a lack of lubrication in the bearing, it stops spinning, which leads to a break in the timing belt.
- Formation of play on the bearing. If, when inspecting the car, you find traces of coolant on the pump body, this is the first sign that the pump has exhausted its service life.
- If there is a smell of coolant in the cabin, a hum when the car is running, or signs of antifreeze leakage, the pump should be replaced.
Purpose of the pump
LUZAR brand pump for Lada Priora
The main task of the pump is to ensure continuous circulation of antifreeze throughout both the large and small cooling circles . This ensures continuous removal of excess heat from the running engine and prevents overheating. The pump is located to the left of the car engine, near the timing belt. It can be seen simply by opening the hood.
A little about the difficulties of repair
The cooling system performs an important function. Replacing its components, and especially the pump, must be approached responsibly, carefully weighing your strengths. To carry out the work you will need:
- understanding of the operating principles of the node;
- a set of keys, including for the tension roller;
- assistant;
- availability of 6-8 hours of free time.
The main difficulty of replacement is the inaccessibility of the attachment points. Carrying out the work requires the ability to adjust the valve timing.
Why do you need an assistant? Some operations, such as tensioning the timing belt, cannot be carried out alone.
Recommendations for selecting and replacing a pump
When choosing a pump, be sure to purchase one that is suitable for your motor. A pump for a 16 valve engine is not suitable for an 8 valve engine. The difference in replacing the water pump is that on an 8 valve engine there is 1 pulley, and on a 16 valve engine there are 2 pulleys. . By the way, from this article you can learn how to replace the fuel pump on a Lada Priora.
At the slightest sign of pump malfunction, it is recommended to inspect and replace it. Otherwise, the car's cooling system will be disrupted and engine overheating will be inevitable. And its repair will require more serious financial investments.
Main reasons
Before talking about the signs of a dying pump that needs replacement or repair, you need to say a few words regarding the reasons for the failure of this device.
In total, there are several main factors that cause this to happen:
- Using low quality antifreeze. About 90% of pumps break down precisely because of this. Such a cooling liquid contributes to the appearance of tarry deposits, which makes the impeller difficult to rotate;
- Corrosion. Again due to low-grade antifreeze;
- Cavitation, that is, the formation of vacuum bubbles that can literally tear out pump particles and destroy the mechanism;
- The result of normal wear and tear. Each device has a limited resource. The best samples last about 200 thousand kilometers;
- Broken fastening. It's simple. The fasteners became loose, the pump became loose and fell apart.
In most cases, it is the car owner himself who is to blame. Drivers are required to monitor the condition of the cooling system, periodically check the pump, and change the coolant on time.
We cannot exclude the problem of manufacturing defects, as well as simply low-quality and cheap pumps that are installed on budget cars or as part of repairs, thereby deceiving the client.
It is not surprising that the timing belt may then fail, the tension roller may rupture, the cylinder head gasket may break through, and other troubles that can cost a lot of money during repairs.
Problems with the water pump can occur on various cars:
- on Kalina;
- VAZ 2110;
- Lada Priora 16 valves;
- VAZ 2114;
- Lada Priora 8 valves;
- VAZ 2115;
- Daewoo Lanos;
- Niva Chevrolet;
- Daewoo Nexia;
- Lada Granta;
- Renault Logan;
- Chevrolet Aveo, etc.
Don’t think that this is a problem exclusively with cheap and budget cars, as well as simple engines like ZMZ 406.
The pump can also be used on more expensive cars. It all depends on how the owner monitors and maintains the car with his own hands, or in a car service center.
What should I do to prevent the valves from bending?
Often motorists solve this problem by installing a piston group of type 124. But this replacement does not require your own funds, reviews say. After all, for this purpose you will need to remove the old piston group, pull out the engine, disassemble it, remove the shafts, which remains for our client to do, etc. For 100 for such a function they will charge you about 50 thousand rubles.
Engine cooling is an extremely important process. And if for some reason it is disrupted, this engine will not work for long. The pump is the most important part of the cooling system. And it, like any other unit, is subject to wear and tear. We will tell you in this article how to replace the pump on a Lada Priora car with 16 valves.
Possibility of installing an additional water pump on the Lada Priora
One of the disadvantages of the heater on the Lada Priora car is its low efficiency when the engine operates at low speeds in the cold season, due to insufficient coolant circulation. Therefore, the car interior warms up slowly and insufficiently, which causes some discomfort for the driver and passengers.
There are some requirements that must be met to obtain a high-quality result after installing an additional electric pump.
These include the following points:
- the installed product should not create excess pressure in the heater radiator during operation in order to avoid damage to the pipes or the formation of cracks;
- It makes sense to replace the thermostat and install this component with an increased opening temperature (90–95 degrees Celsius) due to the fact that as the speed in the coolant circulation increases, the engine parts will warm up more slowly, increasing wear on the power unit.
To solve this problem, you can install an additional water pump in the cooling system of the power unit, which will qualitatively improve the heating of the car interior even when the engine is idling. This technology is not new. Engineers have been using it for a long time. Examples include German cars BMW or Mercedes Benz.
Device selection
As a rule, devices from various manufacturers are suitable as an additional water pump for the Lada-Priora car.
These, for example, could be brands from:
- Bosch company;
- ;
- .
Video: positive effect of installing an additional electric pump on the Lada Priora
However, most often the Lada Priora is equipped with an electric water pump, which is installed on Gazelle cars. This may be an old or new design, but the principle of operation is the same for both: due to the vacuum at the inlet during operation of the product, a pumping force arises, which drives the coolant through the system. In fact, the pump from the Gazelle car is a classic centrifugal pump.
The design of the new pump version is much more successful and causes fewer complaints from car enthusiasts. And it is also less noisy during operation. The main problem that motorists encounter when using such an electric pump is its leakage.
Installation and connection of an additional electric pump
To equip a car with an additional electric water pump, you will also need a regular relay that has normally open contacts (this can be an ignition or starter relay from a VAZ 2105, VAZ 2108). It is necessary to close contacts No. o86 and No. o30. And you will also need a reinforced hose and clamps for clamping the pipes.
An additional pump can be installed in any of the gaps in the supply or outlet pipes of the car’s heating stove.
Installation of an additional electric pump is quite simple, and the efficiency of the heater increases significantly
The pump is fixed in the Lada Priora in the following places:
- stud for fastening the washer reservoir;
- studs located next to the battery;
- on the engine shield.
The device can be connected to a wide variety of systems.
It could be:
- recirculation button;
- SAUO stove block;
- heated mirrors;
- other convenient places.
