A lot of motorists face the situation when a diesel engine stops working. This problem is not difficult to eliminate if timely and correctly detect the causes of its occurrence. To find out why the diesel engine does not start, it is necessary to delve into the device of this type of engine and consider the principle of its work.

Diesel engine, gasoline engine - what the difference

The diesel engine is an internal combustion unit. Due to its compression, the fuel mixture is flammified in the chamber. When the engine is functioning, due to the increase in pressure, the air is instantly heated in the cylinder - 700 degrees Celsius. The main difference between the gasoline unit from the diesel is the fact that in the cylinders of a diesel engine, the fuel gets into the chambers. The diesel fuel is injected under high pressure, which contributes to the actual instantaneous spraying of the mixture and its fire.

First, diesel engines are preferably installed on cargo transport, as they are more powerful in comparison with gasoline analogues. However, now they are used for passenger cars. They are more economical, which allows the driver to spend less resources for the purchase of fuel. Despite the mass of advantages, diesel engines also have several drawbacks. In fact, they are not serious minuses, they are more likely to be called engine whims, which are manifested in difficult conditions of use.

Causes of problems - Wrong care and improper operation of diesel

The most common reason for which the diesel engine stalls is a violation by the car enthusiast of the basic rules of operation. In addition, it may affect the non-compliance of the implementation of preventive work. For example, as a result of the fact that diesel fuel contains a large amount of sulfur, oil must be changed every 7.5 thousand mileage. The oil can quickly oxidize and lose their performance characteristics, which adversely affects the state of the pistons.

It is necessary to constantly and constantly pay attention to the purity of the fuel parts and timely drain the waste and the tank and filter. You should clean them at least two times a year, which will give the opportunity to prevent the filter zoom.

Causes of troubleshooting - fuel is not seasonal

The robot of the diesel engine is strongly affected by the fuel itself, which should coincide with the season of operation. For example, during the cold season, the diesel is able to slander as a result of the fact that the motorist applies the summer grade of fuel, which is thick in the cold and turn into a viscous mass. In the end, the fuel pump cannot serve a diesel engine in the motor, and therefore the fuel lubricates the pump, during its absence the unit is subjected to rapid wear. In this case, the only way out of the situation is to drive the vehicle into a warm and dry garage to warm up fuel.

Causes of problems - Faulty fuel pump or filter

Not rare a diesel engine stalls as a result of a wiring fuel or tightness of these elements. In this situation, they must be cleared. In some cases, the reason may be in the failure of the fuel filter.

Very often it becomes unsuitable for operation as a result of using poor quality diesel. In addition, the device may not work because of the fuel pump breakage.

Causes of troubleshooting - Bad Engine

Some newcomers-motorists incorrectly launch a diesel engine. The most basic rule is not to start moving on an immentable engine. It is necessary to warm it up well in the cold season. In addition, during the launch of frosts, the cannut candles should be used, which will be able to significantly speed up the procedure.

Causes of problems - Low compression

This cause of a diesel engine breakdown can be found quite often. In addition to the fact that the engine does not start, low compression entails a lot of other troubles:

1. As a result of uneven decrease in compression, the engine works uneven and shakes.
2. Due to the unburned fuel, the engine smokes with gray smoke.
3. Due to the breakthrough of burnt gases, the unit is covered with oil drifts - an increase in pressure in the crankcase, which displaces oil through the glands.
4. Increase the consumption of motor oil.
5. The increasing noise during the motor operation.
6. Increase fuel consumption.
7. Reduced motor power.

Usually, the wear of the motor piston is the root cause of poor compression. The cylinder mirror is most damaged, and the piston rings retain their workableness. However, they cannot compact the gap between the piston and the cylinder.

Causes of problems - wear pistons

To increase the compression into the engine cylinders, it is necessary to pour oil. To do this, turn the sticky candles and pour three or four tablespoons of the liquid into each hole. Then you need to throw a piece of dense tissue on the engine. Pay attention to the wire, which is suitable for candles, it should not be closed on the body. Now we try to start the engine - for three revolutions, the oil will come out. However, in the case of too low compression - the motor is subject to repair.

It makes no sense to change piston rings - it is necessary to restore the sleeves. To do this, make the blocking of the block and pressing the new sleeve into it. After such a procedure, the cylinder is mounted respectively the size of the existing piston. This repair is capable of preventing a problem with the vehicle factory for ten thousand kilometers of the mileage.

Also, compression may decrease as a result of the destruction of the piston. This happens when the use of low-quality diesel fuel and also due to the aggressive style of driving driver.

Causes of Motion - Engine Wear

In some situations, the breakage of the diesel engine can be caused by the wear of the unit or the parts of the fuel system. It provokes a decrease in compression and the engine will either be launched poorly, or it will not be able to work at all. This is especially much noticeable in the cold season, even if the candles are fully working, and the motorist applies only winter high-quality fuel. Frequently often, at the same time, the motor starts with a tug and if he is heated, it does not cause problems.

It is worth noting that a sharp decrease in compression indicates the wear of the unit. Then it is repaired or replaced. It can also be understood that the engine is worn if the fuel oil consumption is increased, and the pressure in the crankcase is high enough. In this situation, the only way out is the engine overhaul.

In addition, disorder sprayers can come into disrepair, which will increase the consumption of the diesel fuel, and the black smoke will perform from the exhaust pipe. Very rarely, when breakdown, you can see the caustic white smoke from the exhaust. These parts should be changed in a timely manner, as their resource is about eighty thousand kilometers. The long period of operation of the engine with worn sprayers can lead to the root of the pistons and the forkamer. It is often possible to meet situations where PTW plunger pairs wear out, which is accompanied by a complex launch of the heated motor. They also need to be periodically changed to avoid the breakdown of the motor.

Advice professionals how to start the engine

A poor-quality fuel significantly increases the likelihood of a diesel engine breakdown. In most situations, the pressure valves flow as a result, as a result, the depleted fuel mixture falls into the combustion chamber. This is because part of the fuel is fed back into the plunger, since the pressure valve does not cut it off. The situation aggravates the operation of the engine at high revs. Due to the use of poor-quality diesel, a plunger and nozzles are able to suffer. The plunger should be lowered as smoothly, otherwise it is worn and negatively affects the operation of the motor.

When the air temperature is less than ten degrees, it is recommended to calculate twice the candles. In some cars, when you start, a specific click of the glow relays of candles is heard, and in ten seconds - the signal is turned off. You must turn off the ignition, wait a few seconds after turning off the relay, then start the engine again. Wait for the light bulb of candles and boil the motor, pressing, while gas.