The first signs of a pump malfunction: do-it-yourself solutions

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42

The water pump, or pump, drives the engine's cooling system. Without it, the motor would overheat and fail. The pump also regulates the flow of coolant in the system. Its breakdown is accompanied by a number of characteristic symptoms. To prevent the motor from overheating, you need to know the first signs of a pump malfunction. They will be discussed in detail below.

Where to start?

There are certain signs of a VAZ pump malfunction. In these models, the pump ensures the movement of antifreeze along the contour of the cooling jacket, lines and pipes, as well as along the radiator. In the warm season, even a slight malfunction of the pump can lead to overheating.

It is worth noting that the signs of a pump malfunction on the VAZ-2112, 2107, 2109, 2114 and some other models should be able to identify as soon as possible. The fact is that in these models the pump is driven bytiming belt. If the pump jams for some reason, it will break. This, in turn, leads to deformation of the valves on the engine. This situation is observed in most cases when such a breakdown occurs. Therefore, it is important to independently recognize the signs of a pump failure in the cooling system.

Knowing the signs of a malfunction of the pump VAZ-2114, 2112 or earlier models, you can avoid costly repairs to the motor or its constant overheating.

It is worth noting that the water pump of the cooling system has a certain life. After its expiration, this element of the system must be replaced. In cars with a pump driven by a timing belt, this element of the system needs to be changed every 60 thousand kilometers. This distance is typically covered by a car (with regular driving) in about 48 months.

Why does the pump fail?

Before considering the signs of a malfunction of the pump 2110, 2107 or other models, you need to pay attention to the reasons for the rapid wear of this element of the system. A high-quality pump can last about 100-110 thousand kilometers. For this reason, not all drivers change it after 60 km of run established by the manufacturer's regulations.

Most often, the replacement of the pump coincides with the second replacement of the drive belt, which is installed in the gas distribution mechanism. At the same time, they usually try to combine the replacement of the pump with the change of antifreeze.

Quality pumps are durable. They can last as long as 2 timing belts. However, not alwaysyou can buy a high quality pump. Such a device is not able to work for a long time without breakdowns. Therefore, problems that appear in the cooling system are not ruled out.

Poor quality antifreeze or mixing different types of coolant can reduce pump life. Because of this, the pump fails much earlier. For this reason, it is advisable for the driver to regularly check the pump for faults.

Fluid leaking from drain hole or from under seating surface

There are various signs of a malfunction of the pump VAZ-2109, 2107, 2114 and other car models. So, if the coolant was of poor quality, a leak may occur in the area of \u200b\u200bthe drain hole. In this case, seepage occurs, the formation of drops after the vehicle is broken in. This can be determined by examining the area of the drainage hole. It is worth noting that for a new pump, a small amount of fluid leakage is normal. This happens within the first 10 minutes. motor work. This is due to the movement of the mechanical seal to the correct position.

If the new pump's break-in period is complete and fluid is still leaking from the drain hole, it is a sign of a problem. It is necessary to qualitatively flush the cooling system and install a new pump. Next, you need to fill in the required amount of new antifreeze of acceptable quality.

If a leak is observed from under the landing surface, this is alsoindicates a breakdown. In this case, a sign of a malfunction of the VAZ-2107, 2110, 2109 pump or other models is getting wet, drops, smudges on the body or around the specified area. The reason for such a breakdown is improper installation of the pump or improper use of sealant, seals.

If the pump is new, it must be removed and checked for correct installation. It is especially important to pay attention to the tightening torques. If the pump is already old, it must be replaced.

Rust, deposits

Signs of malfunction of the pump VAZ-2110, 2114 or other car models may be different. On external inspection of the pump, rust can be seen. Most often, corrosion affects the blades of the impeller. This leads to a decrease in the rate of pumping antifreeze in the system. Rust can be caused by dirty coolant or a compound that is incompatible with the pump. Mixing antifreeze with different chemical composition can also lead to such a malfunction.

Another cause of rust on the pump may be damage to its cover. In this case, it will not be able to close tightly. Because of this, air bubbles appear in the composition, which causes oxidative processes.

In this case, the pump will need to be replaced. The cooling system will need to be thoroughly flushed and filled with new antifreeze. The lid needs to be checked for tightness. It may need to be replaced.

You also need to replace the pump if there are deposits on the internal surfaces. Such signs of malfunction of the pump 2114, 2110 or other model can only be assessed by visual inspection of the system. Tar, mineral or other deposits appear on the internal surfaces of the pump. They clog the pump, prevent the system from working properly.

The reason for this malfunction lies in the contamination of antifreeze or the use of an inappropriate composition. The system must be flushed with high quality using special formulations for this. The pump is changed, a new high quality antifreeze is poured in.

Cavitation, bearing damage

Considering the signs of a malfunction of the engine pump, one should note such a negative phenomenon as cavitation. This is the process by which bubbles form in antifreeze. They damage the internal surfaces, individual parts of the pump. As a result, chipped areas remain on them. Subsequently, they become rusty.

Air bubbles appear in the pump inlet area. When the pressure in the system builds up, they collapse. This process brings significant harm to the entire system. You will need to replace the pump, flush the system.

Considering the signs of a malfunction of the pump VAZ-2114, 2112 or another model, you should pay attention to such a phenomenon as play on the bearing shaft. You need to check the system after turning off the engine. Press on the bearing by hand. There are no signs of backlash in a working system. If the pump makes a grinding or squealing sound during operation, this also indicates a bearing failure.

The cause of such a malfunction isexcessive belt tension. Because of this, a large load is applied to the bearing. This leads to accelerated wear of this part. If the seal at the end of the mechanism is damaged, fluid will enter the bearing. Its lubricant will wash out.

You need to check the belt, pulleys, alignment and tensioner. If there is a malfunction in this system, it must be corrected. Then the pump changes. A cheap pump of low quality can also cause a similar malfunction.

Shaft defects

Among the signs of a water pump malfunction, it is necessary to note the presence of deformation on the shaft. It may be bent or completely destroyed on examination. If it is broken, then the overload was sudden. Also, imbalance leads to similar consequences.

If the material from which the shaft is made has changed color (most often it acquires a blue tint), this indicates the gradual destruction of the shaft. This is due to excessive heating. The reason for this failure is the misalignment of the drive belt. This leads to deformation of the shaft or even its fracture. Due to insufficient quality service, significant vibrations appear in the system.

In this case, the pump is changed, and the belt drive is also checked. All elements of his system need to be examined. You also need to assess the condition of the fan that is located on the pump (if it is provided in the engine system). If it is bent, other deformations are visible on it, this can destroy the shaft. Clutch wear also leads to a similar outcome.fan, spacer ring.

Other verification methods

There are other signs of pump failure. You can check the system using a simple method. First, the engine of a VAZ or another car (the method is suitable for most car models) needs to be warmed up. The system should reach operating temperatures.

Then the engine must be turned off. Hand pinch the upper pipe, which fits the radiator. When the pump is working, fluid pressure will be felt inside. The pump pumps it up. With this method of testing, you do not even need to remove the pump from the machine.

You need to be careful when conducting such a check. The antifreeze in the system gets very hot. If there is no pulsation in the system or it is weak, the pump should be carefully inspected.

To carry out the test, the protective cover must be removed from the gas distribution mechanism. This will allow you to visually inspect the pump. If there are defects that were discussed above, you need to take the appropriate action.

Change or repair?

If the pump shows signs of malfunction, it must be replaced. Many drivers do not do this after every 60 thousand kilometers. If the time for replacement has come, but there are no external signs of a pump malfunction, a thorough check must be performed. Often the first signs of failure are observed inside the system. So, if the pump blades are made of metal, corrosion appears on them. Traces of mechanical damage will be visible on the plastic elements of the system. Such a device is notcan be used in the cooling system. Even if it works now, it will fail very soon.

Some drivers decide to repair the pump. Theoretically, this procedure can be performed, but practically it is impractical. The pump is quite affordable. Therefore, it is easier to buy.

Experts do not recommend repairing a pump driven by a timing belt. Otherwise, the pump will not be reliable. The probability of its failure increases many times over. Due to its breakdown in such a system, the motor may fail. Therefore, it is better not to save money, but to buy a new pump. It will be much more reliable than a refurbished pump.

It is very important to install it correctly in its original place. Particular attention is paid to seals, the correct tightening of fasteners. In some cases, a special sealant is used for joints. It prevents leakage. However, the application of the presented material is not always possible. It will not allow you to subsequently loosen the motor fixation to attach the timing belt on some car models.

Replacing the pump in an 8-valve system

Knowing the signs of a pump malfunction, you can replace it in a timely manner. First you need to remove the casing from the timing. If necessary, you will need to loosen and remove the tension roller. Further reduce the fixing force of the generator. His belts and timing are removed. The hose from the pump can be disconnected. Next comes the antifreeze. After that, it will be possible to remove the protective cover and pump.

When the new pump is installed in the appropriate place, you need to set the timing marks. itnecessary, as the crankshaft may move relative to the camshaft.

You need to pay attention to the correct tightening of the pump bolts. They must firmly fix this element of the system. However, they cannot be pulled over. Otherwise, the threads may be damaged and the gland may be crushed.

When refilling antifreeze from the system, you need to remove plugs from the air. The liquid must be topped up according to the level. After replacing the pump, you need to turn on the engine, warm up the system. Then it is inspected for leaks.

Replacing the pump in a 16-valve system

If the car has a 16-valve system, changing the pump will be a little more difficult. However, doing this procedure yourself is not difficult.

First you need to dismantle the plastic casing and the timing belt trim. To remove the upper parts that separate the pulleys from the cylinder block, you need to follow the steps in sequence. This can only be done after dismantling the timing belt, camshaft pulleys and rollers (tension and support). Only after that it will be possible to pull out the pump.

To be able to get to the lower bolts that fix the casing, you will need to remove the right wheel. After that, it will be possible to dismantle the pump. Then carry out the same actions as in the previous paragraph. If the pump is installed incorrectly, it will leak. Therefore, it is important to follow the manufacturer's instructions.