Defective cylindera symptoms: cracked side dish, burned

The newspaper, also called the «head» of the engine, is in its upper part. It is connected to the cylinder block with the help of screws. The head is one of the main parts of the engine, which is the basis of its construction.

The head can be compared with a lid that covers the cylinders of an engine. When installing the articulation between the head and the engine is sealed with great care and attention using a gasket (popularly known as «head gasket»), special, drawing, with the role of guaranteeing high compression of the fuel mixture during the working tender. The damage to this gasket can destroy the engine.

The component parts of the head are responsible for the mixing and supplying process in the combustion chamber. A correct relationship between fuel and air can only be obtained by the synchronized operation of all the elements of the components of the head.

Depending on how well the components are adjusted, the engine function will be determined.

The head is made of cast iron or aluminum alloy.

2. What role does the cylinder have?

The cylinder has the following main functions:

• Ensure the necessary shape and rigidity of the flames rooms
• Execution of gas distribution functions: the head acts as a housing for the entire gas distribution mechanism, while the suction and unloading channels are in the head.
• Ensure sufficient mechanical and thermal resistance
• Lubrication and synchronization
• Cooling of the on fire rooms with the entire upper part of the engine (in addition to guaranteeing the holding of the engine coating)
• Theft of a reliable installation for the installation of candles, elements of external distribution and other equipment.

Therefore, the head (the head) plays a very important role in the engine, allowing you to work. Therefore, any malfunction, deformation or deterioration of the head or its individual components involves the loss of engine performance and, in some situations, a complete deterioration of the power unit.

3. What is the coating of the cylinder head

The garrison of the head is responsible for the sealing of the connection between the cylinding block and the head. It makes it possible to make the combustion chamber and the cooling cover channels, along which the cooling liquid moves. The garnish of the head can be made of thin metal or parontiu reinforced (which has a edge in those places where holes in the combined room are made).

4. Symptoms of the cried cylinder

In most cases the wear of the engine takes place in its upper part, that is, on the head (head). There are several causes that produce its cracking but the most common is Engine overheating.

Cilipo cracks also occur when the newspapers are not adequately tightened.

Symptoms of cracked newspapers:

• The foams of the engine fluid and produce bubbles. In the situation in which the head is broken, the cooling liquid penetrates the oil and its level will decrease from the expansion ship. When an oil film is formed in the expansion ship, this is a clear sign of the microphid aspect in the head. The engine temperature will decrease or increase. So, if you notice that the arrow on the temperature sensor drops and grows again, this will have to warn you.
• The engine vibrates a lot, especially when climbing. This symptom is the consequence of microphide formation. If the antifreeze penetrates the oil and the foam, then there is the suspicion of the existence of a crack. In order to demonstrate this you must dismantle the candle (candle) and look at it. Look if there is liquid on it. Then dry the finger and put the tongue. Don’t swallow! The antifreeze has a sweet taste. In this case, then you sure to form a crack on the newspaper.

5. Is it possible to repair the broken cylinder?

The broken head can be repaired by welding: this method is the most efficient and reliable. The operation is performed in 4 steps:

1. First cut a piece of material that corresponds to the size of the crack. The depth of the channel must be at least 8 mm and the shape must be increased.
2. Before starting the repair of the head, it should be heated at 200 degrees.

For this you can use an acetylene lantern.

3. For repair, use an installation of gas with additives. The most effective results were obtained with the welding in ARON.
4. After the welding, it must be finished by careful cleaning of the welding. If there are no defects, the surface of the head should be polished.

6.

The above symptoms indicate the presence of microphids in the head of the block. However, there are many situations in which it is difficult to carefully determine the position of the cracks. In addition, sometimes it is quite impossible.

However, there are several methods to control the newspapers for cracks. Before starting the verification procedure, it is necessary to perform the preparatory works, i.e.: rinse and clean the area.

• Diagnosis of magnetic particles – This check lasts the slightest time. The magnets are installed around the head and its surface is sprinkled with small metal chips (iron). The chips will begin to move to the magnets. If there are cracks, the chips will begin to remain blocked together. It is a commonly used method because it can also detect small cracks.
• Verification with liquid – A special painting liquid is used. This method is used to control non -medical material products. The procedure is performed in different phases:

OR Cleaning and degrease the surface with a solvent

OR Application of a solutions with a special dye on the tested surface

If there are cracks, they will become visible: to increase the effect, the surface can be sprinkled with white powder.

• Pressure test – To perform this test, all the holes with special caps will be blocked and the compressed air is supplied to the water coating channel. The head is immersed in water to control the losses. A special bathroom is used, with water heated at 70 degrees Celsius. The nature of the cracks can be established according to the intensity with which air bubbles come out.

7. Why does the head of the head burns?

The combustion of the garnish of the head is a serious and fairly frequent defect.

The most common causes of the defect or exhaustion of the stack of the head are:

• Engine overheating
• Wrong installation of it to the replacement
• Consequences of regulating the power of the internal combustion engine
• The improper tightening head of the cylinder newspapers
• Low quality fuel which is accompanied by detonation

The first indirect sign of burning the garnish of the head is the overheating of the engine. A defect in the combustion chamber of the edge on the gasket has the consequence of penetrating the hot gases in the engine cooling system. Consequently, the antifreeze will heat up.

It seems that the overheating of the engine often disables the garnish and therefore its destruction causes an increase in the motor temperature.

8. Symptoms of the Arsa cylinder

In the situation in which the garrison of the head is burned, the car presents the following symptoms:

• The burnt gases enter the cooling system and quickly heat the antifreeze, forming gas bubbles in the expansion ship;
• The first drops of oil may also appear in the expansion ship;
• If the garrison of the head is burned, the fuel mixture in a cylinder will be combined with the cylinder exhaust gases. In this situation there are problems when starting the engine. After heating the engine, he starts working constantly.
• In the area of ​​the junction of the cylinder and the bloc of the head, you can see oily stripes.
• White smoke in the drain drum indicates that the antifreeze enters the combustion chamber.

9. What are the signs and symptoms of a burnt head garnish?

Among the signs that require an in -depth examination of the stack of the head there are:

• A white brown foam on the joja and a white emulsion on the lid of the oil filling indicate that the cooling liquid enters the engine lubrication system. The refrigerant can enter the lubrication system in two ways: through the crack of the head and also in the case of a crack in the block of cylinders. The cooling liquid has reached oil, which leads to a significant deterioration of its properties of lubrication and protection of the engine components.
• If the engine constantly emits a often white smoke (after heating and has reached the operating parameters), then there is a high probability of entering the refrigerant in the cylinders of the power unit. This happens due to the fact that the liquid passes through the space between the garnish channel and the engine cooling shirt and the power supply unit. At the same time, the liquid level in the expansion ship decreases, since part of the liquid has evaporated during the operation of the engine. In the first phase the engine works often stable, the cooling liquid leaves slowly, but after a while the defect worsens. In other cases, an abundant penetration of antifreeze in the cylinders can form the effect of a hammer with water, since about 40-50% of the distilled water is contained in the antifreeze in the cooling system.
• The presence of oil stains in the cooling liquid when the lid is screwed by the expansion tank, as well as in the cooling radiator.
• The penetration of exhaust gases in the cooling liquid determines the formation of bubbles, which are constantly visible.
• The boil of the expansion fluid is another sign that may indicate that the garrison of the head is burned.

10. What happens if you go with the garnish of the burnt head?

In the situation in which it was demonstrated by the diagnosis that the car has a span of the burnt head, so it is better to stop in service (or go to the closest service) and make the necessary measures to solve the problem.

The potential consequences for the engine and the costs of eliminating them can be higher than times than the cost of a head and with its replacement work.

What you need to know is that a garnish of the burnt head, unchanged over time, leads to blocking the head and destruction of the engine. So don’t postpone the intervention!