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The oil pump is an essential element in the lubrication system of a car engine. Its main task is to create oil pressure in the lubrication system, allowing you to supply engine oil to the mobile parts of the internal combustion engine.

The oil pump is instructed by the engine tree through a gear or you can use a belt transmission. In any case, the operation of the oil pump is synchronized with the engine speed. The only exception is that some powerful internal combustion engines may have an electric oil pump that provides turbine oil even after the engine stops to cool the turbocharger.

The defects of the oil pump can significantly damage the engine of a car, because it interferes with the normal circulation of the engine oil through the system.

Symptoms of a defective oil pump

There are several typical symptoms of a defective oil pump, respectively:

• Decrease in the pressure of the engine oil: this is reported by turning on the signal on board with oil can
• Increase in oil pressure in the engine: due to the excessive oil pressure, the car refuses to start. This happens because the hydraulic lift does not perform their functions and consequently the valves work badly.
• Increase in oil consumption: it appears due to losses on damaged sealing elements or cause of residues in poor quality oils.

See the material of which The best engine oil.

Causes of the defect of the oil pump

The reason why the oil pump is defective can be found by checking and diagnosed.

There are at least 8 causes that lead to its main failure, that is to say:

• The sieve of the clogged oil tank – as in the case of the system oil filter, is gradually obstructed with debris and fine waste (often this waste is formed following washing the engine in various inappropriate ways).
• The valve to limit the pressure pump pressure. Usually, the piston and arch included in its design fail.
• Wear on the internal surface of the pump, so called «mirror». It appears for natural reasons, over time.
• The wear of the work surfaces (blades, grooves, axes) of the oil pump gears. It happens both due to the long operational time and of the exchanges of oil non -performing at the intervals prescribed in the car manual or when problems occur.
• Use of dirty or inappropriate or low quality engine oil.
• Incorrect assembly pump.
• Oil filters clothes, unchanged over time. A dirty filter makes the oil pump to make significant efforts, leading to its partial or even complete wear.
• Decrease in oil levels. In this case the pump can work and overheat leading to premature failures.

Whether it’s partial or total defect in the oil pump, it is necessary to perform a detailed check. Therefore, following this check, it may be necessary to repair or even replace the pump.

Defective petrol pump

The most common defects in the oil pump that appear in petrol engines are:

• The deterioration of the gasket
• Clogged filter filter
• The filter is not well fixed
• Created wear of the main parts
• Pressure reduction valve defect

Causes of the defect of the pump of the petrol engine oil

• Decreasing the level of oil in the book
• Damage to control and pressure devices
• Use of inappropriate oil
• Using the lower oil from a qualitative point of view
• Lubrication or defective security valves
• Contamination of the oil filter
• Clumped oil tank and block in the pump case.

If we talk Symptoms of the defect of the oil pump in petrol cars, The most final model on the basis of which we can discuss is VW Golf IV.

The symptoms commonly encountered in golf cars IV when the oil pump deteriorate are as follows:

• Reduce oil pressure
• Increase the operating temperature of the engine
• The appearance of an unnatural noise

In general, the symptoms are largely the same in any type of petrol engine.

Diesel defective oil pump

As with petrol and diesel oil and pump pumps, they can be damaged. The defects in the oil system will be reported by the oil pressure lamp in the dashboard.

The signs of problems with the lubrication system are:

• Reduced oil pressure
• An increase in the consumption of it

Main defect: the design of the oil pump, regardless of the type to which it belongs, is relatively simple, which guarantees reliability and a lot of time. Yet there are defects, or rather it is important: a decrease in performance, which leads to a reduction in performance in the system. And this leads to more serious defects, because units that are not sufficiently lubricated begin to wear intensely. This can happen for various reasons. The most common, however, are the following:

1. A) Clog the installation of the oil tank with misery;
2. B) Reduced pressure due to worn components;
3. C) The bypass valve can also create problems: due to misery it can be blocked in an open position, which will cause the constant unloading of the oil. This problem can be solved by washing the pump and installation.

The differences between the lubrication systems of petrol and diesel engines

There are no special design differences in petrol and diesel lubrication systems. However, since the functioning of the diesel is subjected to higher temperatures, the main difference is the engine oil used. The basic substance in diesel is similar to that used for petrol engines, the difference consisting of the package of different additives that allow them to have the following functions:

• High cleaning – Diesel engines are subject to soot and therefore require intense cleaning
• Stability to oxidation – due to the high compression ratio, the exhaust gases can penetrate a diesel engine, which leads to the oxidation of the engine oil and its premature tiredness.

Tips from Vrom Car Mechanics

It is very important not to ignore the symptoms that can announce the failure of the oil pump, regardless of the engine that the car has. However, more important than the treatment is to prevent any problem. And although it may seem complicated, there are only a few things that, regularly and conscientiously, can help you have a «healthy» oil pump as long as possible.

So, the most important things to consider not to have the defective oil pump are:

• Maintenance of the cutting system: this translates into a regular washing of the pump and installation;
• Perform oil exchanges within the terms established by the manufacturer;
• Change filters as many times as necessary;
• Use of appropriate diesel/diesel oils;
• Use of quality oils;
• Use of appropriate and quality filters;
• Periodic control of the oil with the joja, to see at what phase it is oil, both in terms of level and quality. A black oil should be changed because usury will increase.
• Do not complete the level with a different type of oil compared to the usual one because the components enter the reaction.

In the event that it is not possible to perform these recommended operations, direct authorized services.

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