As a rule, most drivers neglect regularly checking the state of the air filter, and pay attention to it only when the engine begins to "pine, frankly" clutch ", or there are clear signs that the air filter is not all right. In other cases, under the hood, no one looks over.

What will signal the presence of oil in the air filter

The oil that appeared in the air filter, in itself no harm to the state of the engine can not be applied, but the very fact of its appearance is a reason for a serious check of the engine status, and, possibly its overhaul, which is known is very not cheap.

The availability of oil in the air filter may indicate a number of problems. The reasons why the engine lubricant appears in such an unusual place for it, can be absolutely different, and each driver needs to be prepared for such surprises. If you delve into the principle of operation of the internal combustion engine, then there is nothing unusual in the appearance of oil in the filter.

In the process of operation of the engine in Carter, two, aimed at each other, stream - air and crankcase gases. When fuel injected in the engine, a gas mixture is formed, which falls into the engine crankcase. If it is working, then all spent gas mixtures are completely outlined. In fact, both streams, air and gas, pass through the same way. In the process of engine wear, oil is falling into exhaust gases, which, as a result, it turns out in the air filter.

Possible causes of oil in the air filter and solve methods

The most basic and most serious reason for the appearance of oil in the air filter - engine wear, so first of all should be checked if there is a compression disorder. The indicators of all cylinders should not differ from each other more than one atmosphere. If the difference exceeds this indicator, it is necessary to carry out more detailed diagnostics, as it is likely to have time to overhaul engine. Additional confirmation of the need for engine repair is a large oil consumption and blue exhaust.

polluted gases hose what to do

if compression is within the normal range, then the situation is not so serious. In this case, the cause of oil release into the air filter can be contaminated with hose and channels, according to which gases are removed from the engine crankcase. To eliminate the problem, it is enough to disconnect to clean and rinse all hoses, channels and units through which exhaust gases pass.

In addition to cleaning the crankcase ventilation channels, one method can be used, which will help completely eliminate oil entering the air filter. The essence is to disconnect the gas supply hose from the crankcase from the crankcase, lengthen it, and take the engine below so that the exhaust gases come out freely. At the same time, the fitting itself must be drowning. No need to forget that this is a temporary measure, and the issue of crankcase ventilation is impossible to neglect.

throttle not working

Another reason, due to which the oil can be in the air filter. If a thick layer of nagar and other bad sediments have accumulated on the surface of the throttle, the pressure in the exhaust gas removal system will increase greatly. As a result - oil begins to gradually squeeze through the glands and it enters the air filter nozzle. A contaminated damper must be cleaned. It's not so easy to do this, it does not always help spray for cleaning, because it removes only light pollution.

In this case, it is recommended to visit the car service, but if there is some experience, you can do everything yourself:

The throttle is located directly in front of the intake manifold. First you need to remove the decorative plastic cover from the engine (if it is provided in your auto model). After that, unscrew the plug of the expansion tank to reduce the pressure in the car cooling system. Next, you should remove the air nozzle ventilation hose, which must be explored for the presence of oil. If the oil is, it means that the ventilation canal has been hampered in the throttle node.

Now we take a cruciform screwdriver and unscrew the clips on two clamps, after which we remove the flap heating hose (if you wish, you can drown the hose by shutting it with conventional ignition candles). We take out the hose of the fuel tank ventilation system (for this you need to weaken another clamp), after which it remains only to remove the cable and two throttle node nuts. Half of work behind, you can proceed directly to cleaning the damper from dirt and deposits. To do this, processes the damper and the damper and all the channels are nearby.

Be sure to check and, if necessary, clean the channel of forced ventilation, since it is this node that is polluted intensely. If necessary, you can use a long needle or needle for cleaning.

The throttle sensor is also contaminated with time, it must be pulled out and clean it.
After that, we unscrew the fastening of the idle engine regulator, after which the RXH must be removed. Now we neatly rinse the channel in the housing of the node.

An important point: if the idle regulator worked more than 100,000 kilometers, it should be replaced with a new one with the rod (in the presence of a backlash or a large dirt layer).

The throttle gasket must be replaced with a new one. Now work on cleaning the throttle valve and ventilation channels can be considered completed. All parts carefully collect strictly in the reverse order and check the result of the work performed. And he must be felt immediately - the engine as it would receive a "second breathing", starts to work smoothly, without jerks and drop in power.

polluted oil refractor

The deposition of oil combustion products on the main reflector is one of the main causes of oil in the air filter, as oil residues cannot return to the crankcase and together with the gases enter the air filter.

After extraction of the oil separator, it should be examined by the part - it must be sufficiently soft and able to absorb the liquid, stopping it. If the oil separator is heavily polluted, it must be cleaned or changed. You can try to install an additional oil separator under the head cover if you failed to clean the problem. Experienced drivers for this purpose often use a conventional metal sponge for washing dishes, which effectively prevents oil emissions.

Of course, this is a temporary measure, and the sponge at the first opportunity should be replaced with the original part.

air filter is contaminated

It should also be cleaned by the air filter itself, no matter how paradoxically seemed to have this action at first glance. If the filter misses air and exhaust gases, the engine begins to pull air from different places, which leads to the movement of the oil in the intake path. Replacing the air filter, checking and cleaning aircraft can be the easiest and cheap way to eliminate the problem.

reason in engine

As mentioned above, when oil appears in the air filter, it is recommended first to check the compression in the cylinders. This operation is carried out only on a well-haired engine, after which the indicators from all cylinders are checked. If the difference is more than one atmosphere, then it can be bolden to assume that the exploratory wear of the engine has become the cause of oil emission in the air filter.
Compression can be disturbed by the wear of the oil-chain rings, and this also requires a serious "surgical" intervention. In addition, it is necessary to check in what state of the valves, since the wrong valve gaps can cause oil emissions into the filter.

If everything is in order and concerns with the engine, it is necessary to check the engine crankcase - more precisely, the location of the seals, which ensure the tightness of the lubrication system and do not allow oil to flow. If the seals are missing - and this can be immediately determined by overall wear, holes and large cracks, they need to be replaced. By the way, the air filter and oil separator should be changed in any case, regardless of the cause of oil leakage.

When the cause of oil in the filter cannot be established independently, before disassembling the motor, you need to seek help to an experienced specialist - most likely, such cases have already met in his practice, and it will be able to quickly eliminate the malfunction. Remember that professional mechanisaries on a service station will diagnose the engine much more accurate and faster than you do it yourself, which will allow you to restore the normal operation of the engine without unnecessary trouble.

How to eliminate small malfunctions, we briefly wrote above - there are quite a lot of ways. But if the motor throws oil into the air filter because its components are located, as they say "on the last sinking", then the method is only one - the motor overhaul. Repair of cylinders, replacement of pistons, rings and valves, as well as oilmaging and compression rings., Sloves and other parts that can be the cause of oil leakage - all this costs car owners in a round sum. Especially the replacement of pistons, valves and boring cylinders - for the price of these works "pull" at half the cost of the new engine.

Tips how to delay the engine overhaul

If the reason why oil gets into the filter is installed, and there is no time and means for carrying out the engine overhaul, you can apply one way that allows the engine to stretch a little more. Of course, the effect will be short-lived, and restorative work will not be avoided - the engine mileage can be increased by about 500 km.

To delay the motor overhaul, you need to perform a number of uncomplicated actions:

• Remove the hose from the fitting, which takes the crankcase gases.
• Tightly wasting a fitting, so that gases are not broken through it along with oil.
• We make the ventilation of the crankcase using a long hose that we skip under the engine.

It should be noted that in winter without extreme need, such manipulations should not be carried out, since the lengthening of the hose leads to poor heating of the throttle node.

After repair, it is necessary to change the oil, even if it comes to eliminating the small problems described above. Do not forget to follow the recommended engine maintenance periods and change consumables in a timely manner.

When replacing the oil, pay attention to its color and consistency - the development of completely black color with solid particles is the correct preset of the full diagnostics of the engine.