Replacing valve stem seals on a VAZ 2110 8 valves

The latest releases of VAZ "tens" engines included rubber valve seals. The kit consisted of an expander spring and a steel bushing. The manufacturer recommends replacing the oil removal part after the car has run 150 thousand kilometers. Many car owners do this within the walls of a car service center. At the same time, they are completely unaware that in a VAZ 2110, replacing the oil seals of 8 valves can be completely done independently.

The main purpose of the valve stem seal is to seal the joint between the rods. This circumstance ensures that engine oil will not flow into the gap.

The engine will operate efficiently only when the components in the gas distribution mechanism are continuously operating. Engine parts are constantly subject to friction. To minimize their wear, they should be lubricated with oil. But it should not enter the combustion chamber. For this purpose, seals are installed.

When they wear out, the oil will end up in the engine cylinders. This will cause a circumstance to arise in which the oil will begin to burn and form carbon deposits on the walls of various elements. The result will be a drop in compression and the valve will not close tightly.

Design of valve stem seals

Content

The valve stem seal has a simple design consisting of three basic elements:

• base . It is represented by a steel bushing. This is a kind of frame to give strength;
• spring _ Thanks to this element, maximum adherence of the edge of the rubber seal to the valve stem is ensured;
• stuffing box . It is made from rubber or recycled rubber. This element removes excess lubricant.

Purpose and design of valve seals

A worn oil seal allows oil to enter the cylinder along the valve stem, causing it to burn along with the mixture, forming carbon deposits on the valve plates, as well as on the rings and cylinder walls. In advanced cases, coking leads to a drop in compression due to stuck rings and loose valve closure. It is generally accepted that the cost of timely replacement of oil scraper bushings is incommensurate with the repair of the piston group.

The design of the oil seal is quite elementary, it consists of only three basic elements:

1. The base is a steel bushing, which represents the frame of the oil seal and gives it strength.
2. Spring – ensures the tightest possible fit of the edge of the rubber seal to the valve stem.
3. Oil seal - made of rubber or secondary rubber and serves to remove excess lubricant from the valve stem.

It is important to take into account that to replace valve stem seals on a VAZ 2110 8-valve car, it is better to buy appropriate high-quality consumables. First of all, this will affect the service life of the parts; they will not have to be changed ahead of time.

Why do rubber seals wear out?

When the engine is running, heavy loads occur.
This is understandable, since the valve performs over 1000 strokes in one minute. Additionally, it should be noted the effect of the chemical factor, which is caused by heated oil and exhaust gases. The following signs may indicate that the oil seal has worn out:

• The candle thread becomes coated with oil.
• Smoke appears from the neck where the oil is poured.
• The car's exhaust pipe itself smokes heavily.
• Soot appears on the spark plug electrodes.
• Fuel consumption increases noticeably.
• The recently filled oil is contaminated.

If such manifestations occur, it is necessary to replace the valve stem seals of the VAZ 2110.

Important! It is recommended to change the caps to those intended for this car model.

However, there are exceptions:

• the price of “original” caps is much higher than those offered to the buyer in the nearest specialized store;
• If the cap is damaged, there is simply no time to search for and purchase exactly the same part. This forces you to use some other options.

Procedure for replacement

If you need to replace VAZ 2110 8 valve stem seals intended for other cars, then the following points must be taken into account:

1. The diameters of the valve stem and the guide bushing, the location of which is the seat belt, must match.
2. In comparison with the “original” valve, the height should not be exceeded by more than 0.5 millimeters. Otherwise, the valve stroke will be very large and the spring retainer may be damaged.
3. The cap should not have a diameter that is too large. This will ensure freedom of passage inside the valve spring. This is most important for those engines whose valve has two springs. In this case, the outer diameter of the cap will be limited by the internal spring.
4. The length of the seat on the cap and the guide sleeve should be close in size. If the belt is short, it may be damaged by the edge of the sleeve.
5. Pay attention to the internal profile that the surface of the cap has.
6. When replacing VAZ 2110 valve stem seals, the year it was produced is taken into account.

Symptoms of a problem

Failure of the valve stem seals can be determined by several symptoms: the engine will begin to consume oil and the more the valve seals are worn, the more intensely.

A blue tint will appear in the exhaust, indicating that oil has entered the cylinders.

If you do not pay attention to these symptoms for a long time, in the future there may be a decrease in engine power due to reduced compression.

If all this is observed on the car, it is worth carrying out repair work, which boils down to replacing the valve seals.

This can be done at a gas station, but it will be expensive since the replacement process is labor-intensive.

But if you have the skills to repair car power units, then all the work can be done yourself.

Algorithm of actions for replacing valve stem seals on a VAZ 2110

Of course, to carry out such actions you will need certain tools.

First, the caps must be removed:

• The wire should be disconnected from the minus terminal of the power source.
• The camshaft has a pulley with teeth. It needs to be removed.
• The block head is released from the cover.
• The mass must be removed from the studs. To do this, you need to unscrew the two fastening nuts.
• The back cover is removed from the block head. It is secured with a bolt and two nuts.
• The cylinder head is closed with a cover. It along with the sealing ring should be removed.
• The nuts that secure the front and rear bearing housings must be unscrewed evenly.
• Both housings must be removed.

Important! The camshaft key must be removed immediately. Otherwise, you can simply lose it, since it does not fit quite tightly.

• The next step is to remove the camshaft from the cylinder head.
• It is necessary to remove the oil seal from it.
• The crankshaft should be turned. But this must be done so that the location of the piston is at top dead center.
• Next, you need to unscrew the spark plug. To prevent the valve from falling through, a metal rod must be inserted into the resulting hole.
• Then a device is installed that will compress the valve spring. You will need a nut that does not have a toothed collar.
• When the spring is compressed and two crackers are removed, the device is removed.

Advice. When removing the caps, they should not be turned, otherwise this will damage the guide sleeve.

Then you need to install the caps:

1. The cap must be inserted into the mandrel, but it must first be “bathed” in engine oil.
2. The part is pressed all the way into the lower plate.
3. After this, the spring is installed.

Install all remaining valve stem seals in a similar manner.

It is easy to see that replacing the oil seals on a VAZ 2110 8 valves without removing the head can be done completely independently, without resorting to the services of a car service. But it must be said that such actions are carried out only if the model is VAZ 2110. If there are other models, such procedures will not be required.

And one moment. Of course, independent work on changing valve stem seals is only possible if the car owner is knowledgeable about technology and is familiar with the tool. Otherwise, there is nothing left to do but seek help from a car service center. Qualified specialists will provide active assistance in this.

Product selection

The choice of valve stem seals should be taken seriously, since the normal operation of the power unit will depend on this.

A visual inspection is required before installation.

Typically, the manufacturer recommends installing only original (factory-produced) parts. As for AvtoVAZ, for 2110 it will be under catalog number 2112-1007026 . The average cost will be 700 rubles.

Analogs

Motorists recommend paying attention to analogues!

But, as practice shows, most car engine repair specialists do not recommend using original caps. Valve seals manufactured by Elring with catalog number 825.050 . Their price will be 700 rubles , the same as the original ones, but the quality is much higher.

In addition to the presented companies, there are a number of analogues that can be used for installation on the VAZ-2110.