The cylinder head is one of the most important components of the car, the dynamic characteristics of the car directly depend on the quality of which. At the head are the combustion chamber and valve mechanism, which is an essential part of the gas distribution system.
The cylinder head is screwed onto the block, so much so that the bolts or studs that are used for this are used only once, after which they become unsuitable for this operation because they are pulled out.
So, between them the cylinder head gasket is installed . There are times such that its replacement is simply necessary.
In general, replacing the cylinder head gasket is not a very complicated procedure, because, whatever one may say, it is preceded by removal of the cylinder head. Of course, there may be some problems, but laying the cylinder head is a very important part, the replacement of which occurs only in extreme cases.
In principle, there are few cases where it may become necessary to replace the cylinder head gasket. The first is the usual engine repair, in which the head is removed. The fact is that the steel rings, which are framed by the inner edges, with a strong attraction are compressed and become unsuitable for reuse. In addition, in the head there are channels for the flow of lubricant and coolant. Their edges become shaggy. Also, heat-resistant sealant is applied to both sides of the gasket . Its restoration is impossible, but nowadays all the details are available in the nearest car shop.
In addition, the replacement of the cylinder head gasket occurs due to poor-quality assembly after installing the head, since the latter could be pulled with insufficient force. Then on its surface it will be possible to see traces of leakage of oil or coolant. The ingress of the first substance between the gasket and the mating parts leads to inevitable consequences in the form of leakage of liquids poured into the engine block.
More problematic is the replacement of the cylinder head gasket in case of burnout. This is another consequence of a loose fit. As you know, the temperature in the combustion chamber during the explosion of a combustible mixture reaches 800 degrees. Therefore, cylinder head gaskets, as a rule, are made of paronite in a steel frame. But steel rings are located only along the inner edge, so the leakage of gases beyond their limits leads to a sharp decrease in compression in the cylinder, possibly not in one. As a result, a drop in power.
This problem can be determined by the characteristic noise. In addition, cooling or lubricating fluid may enter this channel. This leads to their discharge into the engine compartment.
During the intake stroke, a vacuum is created in the cylinder, which draws oil from the lubrication system through the hole created.
In principle, this problem is quite rare, but if it arises, then delaying the elimination is not worth it, because such a trifle can completely disable the engine.