The car can be easily compared to a living organism. When some defects appear, when some components are used and they start working abnormally, specific symptoms also appear, intended to warn you and understand that the car is no longer in optimal working conditions.
Such a symptom is the smoke that is released on the exhaust pipe.
Most car owners do not always give a serious importance to the color of the smoke that comes out of the exhaust pipe, although this symptom may indicate some defects of the car, some of which can be quite serious.
In addition, in addition to the color of smoking it is very important and the moment in which it appears, as well as the frequency with which it appears.
1.1. Causes white diesel smoke
White smoke is generally a sign of high humidity in the exhaust system. Therefore, it is normal to find white smoke with cold diesel engines.
After the engine has been heated, the steam and condensation disappear. But if you notice that after this moment, white smoke continues to go out with the heating of the engine, you don’t have to stay too much. This is a clear sign of a defect in the diesel engine.
Most of the problems caused by white smoke in the drain pipe are due to the overheating of the engine or the fuel supply of fuel. Pay attention to the shadow of smoking, its smell and the general behavior of the car, it is possible to identify the true cause of its occurrence.
After the engine has reached the optimal operating temperature, such a smoke can indicate ::
OR CONDENS SOLAR
OR Incomplete diesel burning
OR High fuel consumption following a defect of injector
OR Draining the refrigerant in the collector
OR Low compression
It should be specified that vehicles that have a Pap/DPF particle filter can present white smoke from the exhaust drum during combustion particles.
To diagnose a certain cause it is necessary to follow some simple steps:
- First of all, clarify the color of smoking: is it pure white or does it have a little shade? Generally the whitish gray color indicates an incorrect mixture, while the often white smoke indicates the presence of the coolant in the cylinders.
- In the second line check the cooling liquid level for the presence of exhaust gases and the presence of oil in the cooling system.
1.2. Causes white smoke to gasoline
In principle, if the engine and the rest of the components in the engine system work correctly, the evacuation should have no color, because the exhaust systems have a special component, a catalyst that cleans the evacuation of different gases.
However, Why does a petrol engine pull out?
White petrol smoke, condensation – in case of high humidity of the air or during the cold season, in the morning when the car starts, condensation can be formed on the walls of the evacuation circuit
Therefore, the main reasons why white smoke leaves the drainage tube of a petrol engine are:
- Injector deficiency
- Empty the refrigerant in the cylinder
- Poor quality petrol
- Oil burning (smoke rings)
How can we check the cause?
The first thing removes the joja and make sure that neither the level of oil nor its condition have changed (milk, emulsion).
Use a clean white napkin – applied on the drain tube with the engine on. If clean, smoking is actually steam. However, in the situation where some fatty points appear on the napkin, then you have to face the presence of oil non -ars. If, however, yellow or blue spots appear, they indicate the presence of the antifreeze. The antifreeze can enter the cylinders through a broken gasket.
When the driver starts the car, the exhaust drum is heated and the resulting humidity is mixed with the exhaust gases. As a result, white smoke comes out of the exhaust pipe. This pre -fenomenon until the system condensate is eliminated.
At temperatures below 10 degrees even with prolonged engine heating we will have a cold white smoke. Basically this is not smoke but steam. You can also see drops of water on the drain tube.
In conclusion, in the cold period and with an increase in the level of humidity we will have white smoke at the start.
In the situation in which the evacuation is completely dry and the white smoke does not dissipate quickly after the death of the tension, but continues to emit in the air or cloud, it is better to use specialists for a complete and professional diagnosis.
2. White smoke at the beginning -Up diesel and petrol
Whether it’s a petrol engine or a -Diesel, since it is cold – as mentioned above – it is normal that it is present following the condensation phenomenon (due to humidity). However, if after heating this engine it persists, there may be some causes that are worth taking into consideration, respectively:
- The presence of humidity
- The presence of water in fuel
- Incorrect operation of the injection system
- Incomplete fuel of fuel
- The cooling liquid enters the cylinders
- Defective nozzle
- Incorrect time of the fuel pump (to diesel engines)
It is worth noting that some of the reasons why the dangerous white smoke appears from the exhaust pipe of a car, whether it is diesel or petrol can have different origins, so we will deal with separately.
3. The car pulls white smoke when I accelerate and when the engine heats up
We have already established that once heated the engine, white smoke due to condensation must disappear. If this does not happen, it could be one of the causes above. But how to understand what it is?
Well, in the situation in which the accompanied white smoke and a feeling of tremor is accessed, therefore more than one or more problems on the engine appeared. If these problems are not identified in a timely manner and the car continues to be exploited, there is the risk of several problems, including:
- Change of the injection angle and delay the ignition in the cylinders
- Start problems, the engine does not start well, both cold and hot
- In the standings, the engine begins to masturbate you and under the task – Troit.
4. Blue smoke at the first key
The main reason for the formation of blue smoke from the exhaust pipe is the penetration of oil in the engine cylinders. The smoke that appears for this reason can have a transparent blue different from a more often white smoke. Usually when smoking is oily (for this reason it is recommended to perform the test with the napkin mentioned above) the oil consumption increases. Furthermore, depending on the degree of defect, the fuel consumption also increases.
The most common cause of oil penetration in the cylinders is the wear and tear of the components of the cylinder – piston group.
The blue smoke can be formed during the heating of the engine, but it gradually disappears.
If the problem arose due to low valve seals, the color of the smoke will be white white.
It is very simple to identify this defect: there will be little compression or not in that cylinder and a strong black deposit will be formed.
Therefore, you see that white smoke can be harmless, while blue smoke is often a reason for concern. However, you shouldn’t panic. If you come from Brasov or surroundings and you have noticed that your car has the above symptoms, then we are waiting for you in our service for a complete diagnosis. Program here And be safe!
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