The ty 295 engine supplies cause oil pressure. Why does the engine oil pressure in the engine disappear? Oil pressure light on: emergency

The engine is the heart of the car, everything depends on how the power unit works. An engine is a complex device that, for one reason or another, sometimes fails, always so unexpected and unpleasant. Lost oil pressure in the engine is one of the most common engine problems.

If suddenly, while warming up the engine at idle, you find that the emergency pressure light has come on, you should take urgent measures to detect the problem and fix it before it leads to more serious consequences. Consider issues such as low oil pressure and high oil pressure - two popular causes of breakdowns, as well as what to do if there is no oil pressure in the engine. We will consider all these questions using the most popular ZMZ 406 engine in our country as an example.

ZMZ 406 engine: characteristics

So, we have the ZMZ 406 engine, which is installed on most GAZ cars: Volga, Gazelle 3302 and others. This is a four-cylinder in-line carburetor power unit with a volume of 2.3 liters, a capacity of 110 hp. With. The motor is filled with 92 types of gasoline. The engine has a design feature: the location of the camshafts in the cylinder head is observed here.

Due to the unique design, the compression ratio has been increased to 9.3 (an example of an indicator of 8.2, which characterizes the 402nd motor model, can be compared). Due to this, the power of the power unit has also been increased, toxicity and fuel consumption have been reduced.

ZMZ 406 is distinguished by increased reliability and durability, because most of the components are made of cast iron, which is not afraid of either deformation or overheating. The 406 engine has a high level of boost and a hydraulic system is installed. On the one hand, this is a plus, but on the other hand, unnecessary worries, because the engine needs good quality oil cleaning.

If you pour cheap oil into ZMZ 406, then problems are guaranteed. Of course, this occurs in any type of engine, but here it is most clearly noted. Also, drivers of cars with a 406 engine often note either high oil pressure, or, conversely, oil pressure has dropped.

Oil pressure warning light

Probably, every driver has encountered such an unpleasant situation: as soon as the engine is started at idle, an emergency light comes on, warning either that the engine has high oil pressure or there is no oil pressure. There are extraneous sounds, knocking or rattle. It is impossible to leave such a problem, it must be urgently eliminated.

But in order to remove the breakdown, it is important to first understand what it lies in. Therefore, the first thing to do is to seriously monitor the system. You need to pay attention to the sensors and wiring, it may be leaky and this causes a failure. To check the operability of the sensor, it should be replaced with another one that is definitely working. If after such a castling the emergency light is still on, then the problem is different, you need to look further.

Now you need to check what oil pressure is. A simple device will help with this - a pressure gauge, which can be easily purchased at any car dealership, it costs quite acceptable for any budget. Armed with the device, we remove the decorative panel of the motor and dismantle the cables from the sensor. We take the key to 21 and remove the emergency pressure controller. We put a pressure gauge in place of the unscrewed sensor.

The next step is to start the engine and carefully look at the readings of the device. If everything is fine with the pressure, then when the engine is idling, the pressure gauge should show a pressure of 0.6-0.8 bar. If this indicator already drops to 0.5 bar, then there is a problem. So, the oil pressure is gone, the motor needs to be repaired. If higher, then the opposite happened, which is also unacceptable.

To ensure that this problem (missing or high oil pressure) does not occur unexpectedly, a comprehensive check should be carried out regularly. Such a procedure will not take much time, but it will save your nerves and save time on repair work. You can check the oil level in the engine with a dipstick.

If oil pressure is lost, it should also be taken into account that, most likely, a leak has occurred somewhere. If the motor is leaking, then this can be detected by oil stains that form in parking lots. Look at the area where the car was recently parked, and if oil stains are noticed, take measures to eliminate the leak. But not only a leak can affect the oil level.

The oily liquid tends to evaporate during engine operation, but not much, so just keep an eye on the level and add liquid when necessary. Problems with the oil level are expressed not only in a burning emergency light - this is the last stage when it can be said with certainty that there is no oil pressure. Before the light has given a warning signal, the engine, as a rule, begins to stall.

True, after that it can work again, and the driver hopes that if it worked out this time, then it will work out in another. But such an attitude is unacceptable, because the equipment breaks down. How to fix a leak in an engine? Not only the old, but also the new engine can leak. Therefore, to prevent this trouble, despite the year of manufacture of the power unit, you should regularly check the condition of the crankcase ventilation.

This part is bad because it is often clogged with exhaust gases, because the gasket is deformed at the next stage, and then the breakdowns go one after another. You also need to keep an eye on the seals. Due to the fact that they are constantly in contact with high temperatures, the stuffing box material ages and shrinks.

Oil leak repair

If the leak is not strong, then you can use the usual sealant purchased at any car dealer. If the leakage is significant, then sealant is no longer enough here, you will have to dismantle the engine and replace obsolete, deformed elements. Some drivers are sure that a leak can be fixed simply by changing the oil to a more viscous one. But it's not. A more viscous oil will not flow out as quickly, but if there is a problem, it must be addressed.

If you use this simplest and easiest method, then after 2 weeks there will be a real deterioration in the lubrication of the motor and an increase in the wear of the power unit, as well as its impending failure. This is especially serious if the shaft has developed and the oil seal leaks in a chain reaction. If the shaft itself is not replaced in time, but only the type of oil is changed, then a gap forms in the parts due to the friction force, which can no longer be filled with any sealant.

And the last. Sometimes, even after replacing all the parts and gaskets, the driver notes that the motor still continues to leak. What can cause such a failure now? The reason, as a rule, lies in the oil pan. It is uneven and tears the gasket. To eliminate the flaw, you only need to align the pallet. An engine is a complex device in which every, even the most seemingly insignificant detail can cause a failure.

So, a distributor, valve cover, fuel pump and other parts can leak. In new engines, such troubles are not observed, but in units with mileage - a common story. It happens that the valve cover fogs up. What should be done in this case?

Everything is simple. It is necessary to remove the cover, clean it well and seal the rubber with sealant. After this procedure, the lid is put in place. It is desirable to treat the washers securing the cover with a sealant. When tightening the nuts, do not overdo it: the thread here is very fragile, with the slightest extra pressure, the thread breaks.

With simple details, everything is easier. But much more work is forced to attach a deformed sensor. It can no longer be repaired, as it is too thin, complex device. It is to be replaced. If you miss this moment, then the leak can intensify so much that all the oil will flow out in a few minutes.

Of all the leaking issues, the simplest is an oil filter leak. There is no need to mask the problem with sealant and spend long hours in the garage for repairs. You just need to tighten the filter or replace it with a new one.

Now you know what to do if the oil pressure is gone. For domestic engines, this is a common problem, but if you prevent it with timely checks and control over the situation, then such a problem as low oil pressure will no longer bother you.

If the oil pressure light comes on, it means that there is no oil pressure in the engine. We need to stop and look at the reasons. This can be done by yourself or at the nearest service station. Without oil pressure in the engine, further operation of the vehicle is fraught with failure of the power unit.

Oil pressure in the engine is missing or falling - causes and solutions

The oil pressure indicator may light up intermittently, blink or glow constantly. It may light up when the engine warms up, but go out after idling and starting to move. It is possible that the signal will light up when the crankshaft speed increases. In any of the options, it is necessary to look for the causes of the malfunction and ways to eliminate them. Some of them are as follows:

• Oil leak. It is necessary to check the oil level and conduct an external inspection of the motor. It is recommended to inspect the connecting points of pipelines with oil system units, sealing elements. If there are leaks, it is necessary to tighten the fixing bolts or replace the sealing parts.

Important: Checking the oil level must be done with the engine cold. If the power unit is hot or in working condition, it must be turned off and allowed to stand for 15-20 minutes.

• The oil is very thin. The reason may be the use of a lubricant that does not meet the manufacturer's requirements. When heated, grease can lose viscosity and seep at seals. Although, until the motor and lubricant are warmed up, the indicator will not light. In this situation, it is recommended to change the oil in accordance with the manufacturer's requirements.
• The presence of liquid in the oil from the cooling system. Low oil pressure in a running engine may be the result of microcracks in the cylinder block or cylinder head, holes in the cylinder block gasket. As a result of these defects, the liquid flows into the crankcase and mixes with the lubricant. During operation, the crankshaft and the oil pump foam the oil solution, the foam enters the pipeline instead of oil. The consequence of a malfunction is expressed in the presence of thick white smoke from the exhaust pipe, a simultaneous decrease in the level of coolant and an increase in the level of lubrication. To eliminate the malfunction, it is necessary to repair the power plant.
• Fuel in crankcase. There are a number of power plant malfunctions, as a result of which fuel enters the crankcase and mixes with the oil solution. This may be a drop in compression, low-quality and poorly flammable fuel, faulty injectors, and more. Fuel enters the cylinders, but it does not burn completely. Oil scraper rings remove residual fuel into the crankcase, where it mixes with the lubricant. The quality of the oil deteriorates, it becomes more liquid and its pressure disappears. As a result of a malfunction, fuel consumption and lubrication levels increase, thick black smoke comes out of the exhaust pipe. To fix the problem, it is necessary to reduce the rotation of the crankshaft and bring the engine to normal.
• Oil filter failure. When installing the filter, make sure it has a shut-off valve or washer. Their absence will lead to the fact that after stopping the power unit, the lubricant will drain into the crankcase. At the next start, it will take some time to pump oil into the filter, as a result of which the signal lamp will light up. After the motor stops, the cycle will repeat. To fix the problem, you need to install a new working filter.
• Pollution. Violation of operating conditions or failure to comply with the terms of maintenance leads to clogging of the oil filter and failure of the pressure reducing or shut-off valves. To restore the normal operation of the lubrication system, it is recommended to change the lubricant and oil filters.
• Pressure sensor failure. If the sensor is electronic, it is necessary to check the reliability of the wire connection to the sensor and the serviceability of the sensor itself. If the device is mechanical, it is necessary to unscrew it from the system and check for debris. If the sensor is reconnected and there is still no pressure, it is recommended to contact a service station.
• Depreciation of components and assemblies of the power plant. As a result of the development and wear of the crankshaft, distribution and connecting rod-piston mechanisms, there is an increase in the places for the flow of lubrication, as a result of which the pressure in the lubrication system begins to fall. To eliminate this malfunction, it is possible with a major overhaul of the power unit.

Indicator light on - emergency

If the lubrication pressure light is on or flashing, this indicates a possible emergency. It is necessary to stop the car, turn off the engine and figure out why the oil pressure sensor lamp blinks on a warm engine. It could be one of the options:

• Low oil level. It is necessary to inspect the crankshaft oil seals, engine pan, cylinder block. The indicator may come on because grease may be leaking and the level may be low. The second option, due to which the level may drop sharply, is the leakage of lubricant through the oil filter or pressure sensor. To prevent breakdowns, it is necessary to add lubricant, slightly exceed its level. When the indicator goes out, you need to drive to the nearest service station.
• There is no pressure and the oil level is low. No leaks found, but level continues to drop. It is recommended to add lubricant, start the power plant and warm it up in order to evaluate the color of the smoke from the exhaust pipe. Dark blue smoke means that the fuel system is faulty and the rings are flushing residual fuel into the crankcase. White smoke means that fluid from the cooling system is entering the crankcase oil bath.
• The signal light does not light up after turning the key in the ignition switch. There are several possible faults:

1. The grease pressure indicator is out of order. To check, turn on the ignition, disconnect the wires from the indicator and close them to the case. If the light is on, then the indicator needs to be replaced.
2. The indicator is not energized. The contacts may have oxidized and need to be cleaned.
3. The light bulb is burned out and needs to be replaced.

• The indicator glows after starting the power unit. It is likely that the grease is at a high temperature. It is necessary to increase the frequency of rotation of the crankshaft. If the indicator goes out, you can return the rotation to the operating mode and continue driving.
• The lubricant pressure warning light came on while driving or when the fuel supply was increased. The lubrication level has dropped low. It is necessary to raise the level of lubrication a little higher than normal and slowly drive to the nearest auto repair shop.

Prevention of low oil pressure

In case of serious breakdowns in the vehicle's lubrication system, it is better to contact car repair shops. Why the choice concerns them can be answered with convincing arguments. This is specialized equipment that allows you to determine the problem on the spot. Possibility of repair in case of detection of possible serious malfunctions. Availability of the necessary units for replacement and consumables.

But the owner of the car should not wait until the pressure of the lubricant can disappear or its level in the system drops. To do this, it is necessary to carry out prevention. You can do this in your own garage or in the parking lot, using a car tool.

Having finished warming up the engine, you need to look under the hood and under the engine. This is necessary to detect lubricant leaks. If a leak is detected from the oil filter or sensor, loosely tightened places must be tightened or the sealing element replaced.

At the inspection hole, it is necessary to inspect the crankshaft oil seals, which are located at both ends. If they are worn out, you can replace them yourself.

The leakage of oily fluid from the valves or the sump is eliminated by replacing the seal, applying a hermetic compound, followed by tightening the mounting bolts.

Weak clamping of the cylinder head can cause the gasket to be punctured, fluid from the cooling system will enter the oil solution. Replacing the gasket and tightening the head of the block can be carried out independently in compliance with the recommendations for replacement.

In prevention, measures can be taken to restore or increase lubrication pressure. This is especially true if you are moving long distances. How to effectively raise the oil pressure in the engine? For this you need:

1. Drain off the old grease completely.
2. Remove the used oil filter and install a new one.
3. Remove the pressure sensor and install a pressure gauge in its place.
4. Start the power plant and determine the pressure gauge.

If a lubricant leak is detected, the above measures must be taken to eliminate leakage. If tightening the bolts, replacing gaskets and sealant did not bring the desired result and the lubricant pressure could not rise, then you can prepare for a major overhaul of the engine.

Summing up

Given the above, we can briefly conclude why there is no normal oil pressure in the engine. The main reasons are:

1. Loss of viscosity-temperature characteristics of the oil due to its quality.
2. Leakage of lubricant through joints and seals.
3. Malfunction of elements of the motor lubrication system.
4. Depreciation or malfunction of components and assemblies of the power plant.
5. The use of additional additives and additives to the base oil to artificially increase the pressure.
6. The probability of failure of the electrical parts of the lubrication system.

Conclusion

To avoid problems with the lubrication system, it is necessary to take oil fluids recommended by the manufacturer for operation. Constant monitoring of the engine and lubrication system, prevention of malfunctions will extend the period of operation of the car as a whole.

The internal combustion engine is a unit with many highly loaded spare parts. For the correct functioning of the motor, all its elements must be well lubricated. The lubrication complex of the engine is responsible for this. Lubrication is supplied to it through oil channels under a certain pressure.

This makes it possible to qualitatively lubricate parts that experience dynamic and other loads. Some drivers experience low engine oil pressure. The reasons for the failure can be very different.

Reasons for reducing pressure

If the alarm indicator on the dashboard lights up, it means that the oil pressure in the engine is gone. It is worth remembering that when the engine is not warmed up, it may not light up. If the indicator flashes at low speeds, and fades at high speeds, you need to stop using the car, start looking for the cause of the problem.

What to do when the indicator flashes

If the indicator suddenly lights up, turn off the engine immediately. Carefully inspect the mounting location of the oil filter, oil pressure sensor, front / rear crankshaft oil seal. You can use a special ditch or overpass when looking for a leak.

If a leak is detected, top up the oil product. After that start the engine. If the lamp goes out, go to a car service. Do not load the ICE too much.

If the indicator suddenly lights up, and there is no leakage, top up. Start the engine to evaluate the color of the exhaust gases. Blueish smoke from the exhaust pipe indicates the occurrence of piston rings, their wear, and problems with the cylinder mirror.

Problems with oil scraper caps often lead to increased consumable costs. If after topping up the lamp does not light up, get to the car service, carry out a complete diagnosis of the vehicle.

If topping up has not normalized the pressure, then you can not drive a car. It is undesirable to use a cable. It is recommended to order evacuation vehicles and deliver the car to the service station.

Use of additives

The compression in the lubrication complex may decrease due to:

• low-quality lubrication, deterioration of the properties of the oil product;
• leakage of seals, linings, sealing elements;
• malfunctions of the crankcase ventilation system;
• oil pump breakdowns;
• severe wear of engine parts (cylinder heads, piston rings).

Sometimes motorists use additives (revitalizant) to increase the compression of the oil in the power unit. According to the manufacturers, such an anti-smoke additive reduces lubricant costs, enables it to maintain the desired consistency at various temperatures, and restores worn necks and crankshaft liners.

Practice has shown that additives cannot be called an effective solution to the problem. They can be used if you have an old, worn-out internal combustion engine. Remember that a blinking indicator does not necessarily indicate a problem with the motor. It happens that the lamp burns due to problems with the electrician. Perhaps the electrical parts, contacts, wires were damaged.

It is possible to avoid problems with the lubrication complex and internal combustion engines by using only the optimal car oil. Choose an oil product, taking into account the individual characteristics of the use of a car. Select the correct viscosity index.

Car oil and oil filters must be replaced correctly and on time. Ignoring the recommended change intervals can lead to significant contamination of the consumable. Oil starvation will begin, engine wear will greatly increase.

Is the oil pressure light on? Has the pressure dropped or the sensor failed? What threatens oil starvation? How to determine the malfunction, while the engine has not yet failed? What other signs of low pressure, besides a light bulb, and what should I do to make the oil normal?

Causes

There are several reasons why pressure was lost:

1. no oil - the level is lower than the oil receiver and it does not enter the system
2. a crack in the oil receiver - air enters the system through a crack, while a more viscous oil does not reach
3. poor pump performance due to wear or other failures
4. losses in the lubrication system
5. oil dilution
6. non-working oil filter

Also, the light may be on if the oil pressure sensor is covered or the wire has jumped off it, but it's better to play it safe and check everything.

And now in order with all these faults

No oil - the level is lower than the oil receiver and no oil enters the system

When the oil level is lower than the oil receiver, the oil cannot be sucked into the system by the oil pump, because there will be only air at the inlet. As a rule, the oil receiver is located at the lowest point of the engine, in a small recess, so that it is always immersed in oil. But during operation, the oil can burn out and the level will drop, and then there will be nowhere to take the oil from.

Long oil change intervals lead to the fact that the oil loses its washing properties, and also stratifies - a liquid fraction is released and such a thick shoe polish, which settles on the surfaces of parts. The fraction, which is especially thick like dung, likes to cling to the oil receiver, thereby clogging its mesh, preventing the oil from passing through.

The way out of this situation is to monitor the oil level and replace it in a timely manner, draining all the muck from the system. Especially now there are a lot of fakes of oil, which thickens already by five thousand mileage. Do not drive on oil 15,000 - this is too much, especially if you operate the car in city mode. 7 - 10,000 - quite acceptable mileage for replacement.

Crack in oil pickup tube

The principle of operation is as follows: the oil pump is at the top, the oil is at the bottom. Between them is an oil receiver. The pump creates a vacuum in the receiver and oil is sucked into it from below. If a crack forms somewhere in the oil receiver tube, then air will enter the system instead of oil (try drinking a cocktail through a straw with a hole and everything will become clear).

The reason for this may be the vibration of the engine, as a result of which a crack forms, which subsequently increases, taking less and less oil from the sump. There may also be a manufacturing defect or improper installation of the part.

Faulty oil pump

When the oil pump wears out, it pumps oil with insufficient performance and low pressure, this is especially noticeable when starting the engine, when the oil has not yet really entered the pump housing, and another example is when the oil is too liquid due to loss of performance or fuel getting into it - too large the gaps in the oil pump do not make it possible to normally push the oil under normal pressure, because the oil flows out through these very worn slots (these are no longer gaps, just slots).

The oil pump drive can also have such a breakdown, but this is rare, it mostly happens on classic Zhiguli, since on most passenger cars the oil pump is located on the crankshaft and is pressed by a pulley, there the pulley will fly off together with the timing rather than the pump will stop turning. On the classic, the pump is driven by a gear, which often wears out.

Losses in the lubrication system

To distribute oil throughout the system, it is not enough just to have a working pump that pumps oil, it is also necessary that the oil is distributed throughout the system without loss. Where can losses occur? There are such places!

• through the crankshaft
• through oil nozzles that do not close (not used on all engines)
• gaskets and a poorly screwed oil filter also pass well
• balance shafts on some engines with a broken bushing

Oil will leak through any gap, reducing the pressure in the system. Most likely, not much will escape through the liners, because if there are gaps there, then there will be such noise that it will be scary to go.

Oil thinning

Liquid oil passes perfectly through the gaps, so the oil pump cannot create normal pressure on such oil, because the oil passes through the gaps like through a sieve. The oil reaches such an unusable condition due to the loss of performance properties, when the additives stop working, dung and a liquid fraction are formed, it can still be diluted with gasoline. Gasoline evaporates very quickly, so this is not the worst thing for oil.

Non-working oil filter

The filter consists of a filter element and a valve system. When during operation the filter element becomes clogged with dirt and abrasive, it cannot pass oil through itself. Then the bypass valve comes to the rescue, which is normally closed, and when the filter element becomes clogged, it opens and oil flows through it.

The filter element is an ordinary filter paper that traps small abrasive particles that form during operation. When the paper is clogged with these particles, it does not allow oil to pass through itself. To avoid oil starvation, there is a bypass valve in the oil filter - it opens, and all debris that is not stuck in the paper is washed away.

If the valve is stuck in the closed position, then that's it, there is nowhere to take the oil from, the filter is clogged, and there is no other way. This is where oil starvation begins. But if you change the oil on time, such a disaster will not happen.

How to determine?

Usually the oil pressure light comes on first. As long as it doesn't light up, you're probably fine.

If the bearings knock - and as a rule, the connecting rod bearings knock, since they are farther from the oil line - then a characteristic very loud engine knock appears, which is especially pronounced above 3000 rpm. This is the main sign of worn and starved connecting rod bearings.

What consequences?

If the liners rattle, only under measurement with grinding the crankshaft to the repair size, although sometimes you can do without grinding.

Cylinder head parts are most susceptible to oil starvation, especially if there are hydraulic lifters - they will have nowhere to take oil from and the engine will triple. Then the camshaft will suffer, because it is the farthest in the lubrication system and the required amount of oil is unlikely to reach it.

With a short-term oil starvation, when the oil supply is lost, the connecting rod bearings are the first to suffer - they need less than a minute to become a foil. Indigenous bearings may not be damaged in this case.

If the engines have oil nozzles that cool the pistons, then if they do not work properly, there may be overheating and scuffing of the piston skirts.

So keep an eye on the oil level and observe the change interval, the consequences can be very expensive.

If the oil pressure in the engine is lost right on the move, then you must immediately stop, turn off the engine and find out the cause of this phenomenon.

When the red lamp is on, indicating a critically low oil pressure, it is unacceptable to start the engine.

When the red lamp is on, indicating a critically low oil pressure, it is unacceptable to even start the engine, let alone drive. It is just as important to deal with the problem when the lamp flashes periodically or the instrument needle is almost at zero. Otherwise, the consequences can be very sad.

Why is this happening?

Oddly enough, there are a lot of reasons why the device shows low oil pressure or the red indicator lights up. We are talking about the control sensor, whose readings are displayed on the driver's panel in the form of readings or signals. After all, in fact, everything can be in order with the engine, therefore, all possible reasons should be considered. Here they are:

1. It's time to change the lubricant. Due to various circumstances, it became too liquid and lost all the necessary properties.
2. The filter is clogged.
3. Oil pump problems.
4. Reducing valve defective.
5. The clearances in the crankshaft plain bearings (liners) have exceeded the maximum allowable values.
6. Large gaps between the camshaft journals and its bed.
7. Faulty pressure sensor or wiring.

If you do not change the lubricant on time, then there will come a moment when its viscosity drops to the limit. A gear pump designed for pumping a viscous medium will not be able to create the necessary pressure in the system, which will be signaled by the sensor. Oil should be changed at least once a year or every 8000-15000 km, depending on its base (mineral or synthetic).

A clogged filter is not a common cause of low oil pressure in internal combustion engines. However, this happens due to the processes of intense wear of metal parts occurring in the motor.

For example, a flying chain damper shoe on classic VAZ models causes it to beat against the cylinder head housing. If you do not attach importance to the noise that has appeared, then pretty soon the chain will gnaw a decent groove on the edge of the aluminum case. Naturally, all the chips will settle in the filter.

The oil receiver mesh may also become clogged. But such troubles occur with those cars whose owners do not bother with the care and maintenance of their iron horses. All other causes, such as pump gear wear, increased clearances and valve malfunctions, are difficult to eliminate and entail disassembly of the unit.

But first you need to make sure that the sensor itself and its wiring are in order, for this you need to perform an additional check of the oil pressure in the engine.

At a minimum, it can turn the liners, and at a maximum, it can jam the shaft due to overheating.

Back to index

Identifying and Troubleshooting

If the oil pressure in the engine is lost, then it must be replaced.

The first thing to do when the pressure drops is to try changing the oil. Unless, of course, this was done a week ago, in which case the replacement will definitely not work. Also, there will be no special changes when pouring new grease into an old, worn out motor to the limit. Only a major overhaul will help here. But after a long interval, when the owner of the car has not been engaged in its maintenance for a long time, the effect will definitely appear.

Changed the oil and filter, but the light is still on? It is necessary to check the pressure in an alternative way to exclude sensor and wiring problems from the list of causes. For this purpose it is necessary:

1. Find a 10 bar pressure gauge, oxygen hose and metal fitting. The latter must match the thread with the oil sensor.
2. Connect the fitting and pressure gauge with a hose using clamps.
3. Loosen and unscrew the pressure sensor, having previously disconnected the connector.
4. In its place, screw the fitting, while do not forget the sealing gasket.
5. Briefly start the engine at idle and read the pressure gauge.

Readings from 0 to 1 bar indicate that the sensor is working and the problem must be looked for elsewhere. Any value above 1 bar indicates that it is necessary to carry out an additional check of the wiring or the sensor itself, since it gives false readings to the panel. Although such errors are very rare.

But worn oil pumps and crankshafts are much more common. You can think for a long time how to raise the oil pressure in the engine, but after all the above measures, you won’t be able to get by with a little blood. Unless the unit is still new or has been overhauled not so long ago, then there is still hope for a malfunction of the oil transfer pump.

The device of many brands of cars allows you to get to the pump without completely dismantling the power unit. In this situation, the lubricant will have to be drained again and wait a while for it to glass well. Then unscrew the protection and the oil pan, remove it and inspect the mesh for clogging. After that, the pump itself should be removed. It may be necessary to lift the motor by unscrewing the mountings on the pillows, or dismantle other parts that restrict access.

Next, you need to check by immersing the pump in a container with diesel fuel and rotating the drive shaft. If diesel fuel is not pumped, then the oil pump should be disassembled, thoroughly washed and a new pair of gears from the repair kit installed. Then assemble the assembly by installing a new gasket and make sure it works. Now it remains only to mount everything in reverse order and enjoy the ride.

If, after removal, the oil pump immediately showed normal operation or the design of the machine does not allow it to be reached at all, then the hopes of getting off with a slight fright did not materialize. You will have to disassemble, or even completely remove the engine, in another way it will not be possible to increase the pressure. Yes, and there is no need to take half measures, because if the gaps in the crankshaft bearings have already become large, then all other parts are in a similar state and require replacement.