“Wow, it seems that lately the exhaust from my car is strange colored smokeWhat could it be? Is there something wrong with the engine?” If you feel identified with these questions, it is possible that you have a problem somewhere in your car, but don't worry because it doesn't necessarily have to be that way.
knowing the smoke color that comes out of the exhaust of your car, you can get to detect a mechanical problem. The most normal thing is that there are three different colors for the smoke: white, azul y black. Each case suggests a different problem, so below we are going to give you the keys so that you know what the possible fault is.
Although there are exceptions, you should be clear what does it mean beforehand the color of smoke. Each one is due to a substance that shouldn't be there, isn't in the right proportion, or doesn't burn well:
- Blanco: is usually related to the water or refrigerant (which is basically water with additives).
- BLUE: is about oil burning up
- Black: It is usually a problem with the combustion of the fuel
White smoke
If white smoke comes out of the exhaust, it could be due to several causes. Therefore, to pinpoint what is not working well, you will also have to look at the odor and in the comportamiento of the car. Here are the various possibilities:
White smoke with cold engine without odor
If that smoke comes out when you start the engine from cold, it may just be Condensed water whose vapor disappears in a few minutes circulating.
very dense white smoke
This happens when you enter water or coolant to cylinders, evaporating with the fuel. You should check the car as soon as possible, to see where it enters the cylinders. If you open the oil cap and see a brown paste, it means that it has mixed with the oil. Another good indicator is that the car leak coolant, so take a look at the level. If you do confirm this problem, it is best to take the car directly to the workshop For your repair.
White smoke on cold diesel engine smelling of fuel
If smoke of this color comes out accompanied by a strong fuel odor It is because the combustion is not done correctly. The white smoke is not water vapour, but rather the evaporated fuel that could not be turned on. This may be due to a problem with diesel heaters, which do not work properly and the engine does not burn well until it warms up. It can also come out gray in these cases.
White smoke with hot diesel engine
If it is white smoke, it also comes out when the engine is hot, it could be due to a bad proportion between fuel and air. In this case, it means that the mixture is made with too much oxygen and therefore there is a problem with the injection of fuel.
White smoke from the hood
In this case, the most normal is that the engine has overheated. The fault may be in the car's head gasket or in the refrigeration system. Turn off the engine immediately and call a tow truck to pick you up and take you to a workshop. If this is your case, it is worth taking a look at the article: Why a car engine overheats?
blue smoke
Blue smoke and burning smell
We can also find that our car emits blue smoke from the exhaust pipe with a strong smell of burning oil. In this case, it means that it enters Motor oil in the combustion chambers, where it burns with each explosion. It usually happens in older cars and with more kilometers.
We have the problem in the tightness of the cylinder-piston assembly and the segments. To fix it, we can use a denser type of oil, which helps prevent it from passing so easily into the combustion chamber.
Blue smoke and loss of power
Blue smoke can also be due to turbo of our car, in case you take it. If so, it is advisable to check the turbo as it may be in poor condition and put oil in the intake.
Black smoke
Finally, we have the black smoke. This color may be due to the excess fuel that enters the cylinders and that therefore does not burn properly. It will be necessary to check the injection system of our car to find out where the problem is.
If our car emits black smoke low revs and it's diesel, we have the problem in the carbon that forms in these engines. For reduce the amount of smoke expelled, it is good to run the car at about 3.000 rpm for five or ten minutes to clean the exhaust and stop emitting black smoke. In addition, it is highly recommended advice in case we have to go to the ITV.
"To solve this, we can use a thicker type of oil, which helps to prevent it from entering the combustion chamber as easily."
Mistake. What will happen to other elements like turbo? You have to use the one that the manufacturer says, surely he knows more than you. And if we have wear, we have to repair it, not change the oil.
I have a Focus 16 TCI, it's been a few days that when I accelerate it throws out a lot of black smoke, apart from that I have flooded the passenger side with water as if it were from the air conditioner, . I don't know if everything has to do with the same problem, at the moment the car continues to pull well, but I don't know if it is dangerous to drive with it, since I have to make a trip and I can't leave the car. I would appreciate if you help me.
I have a ninssan x trail and it has only accelerated and after throwing a black smoke it has started to fail, it stays as if a cylinder had failed and it jerks, throwing quite a lot of smoke
Ford Fiesta 1.4 TDCI from 2008. It has 160.000kms. Injectors are cleaned, because some injector misfires. It appears to be a common fault on these PSA group engines. They clean put firewall washers, and we see that the car has lost power, high and low. Returning to the workshop they check a thousand things and in the end they determine that it is the injectors (4) that are going wrong. Those injectors are repaired (fireman), they deliver the vehicle and now we see that the car runs like a shot, but it smokes black with carbon like a locomotive. Now in the workshop they say that they are the injectors that have to be put in new… We don't really know where to pull, report, or swallow.
If up to this point in the film we decide to take it to another workshop, the cost paid will be proportionally multiplied by 2 or 3. If, on the other hand, I go with invoices to OMIC, we can spend years and the ITV, it is about to be candy. I would appreciate an expert SOS.
If I, as a Mercedes diesel driver and with 33 years of Mercedes, the engine is the one that sounds in rrelantin, you see in the part of the exhaust how it sounds And the Revolutions have to be in line with their speeds and not PASS more than what is allowed the motor. And you will take it well and you will not have to force the brakes or unnecessary changes and always with caviar a full speed gear and it will go into gear like a glove