Causes of white smoke and oil in the exhaust manifold of a car

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Causes of white smoke and oil in the exhaust manifold of a car

Although it is a topic that has been widely discussed and that creates controversy, on this occasion I want to talk to you specifically about my car, a 2001 Matiz, to start I want to tell you that I have just ringed the engine of my Matiz, the Daewoo economy car, which was bouncing considerable smoke and had already lost almost 60% of its strength.

After a hard job disarming, and ringing and settling the camera of my car, at the time of assembling and turning on the car it turned on without any problem, the detail was presented when the car began to emit a bluish smoke shooting white, after a few 10 minutes the smoke continued, accelerating the car to warm it up the smoke intensified

Possible causes investigated that cause this Smoke

  • One of the causes that I found most when investigating, is when the PCV Valve, which is responsible for burning oil and gases and sending them to the throttle body, is damaged, causes an obstruction and this causes the car to start emitting this type of bluish smoke. pulling white, but at the time of testing the valve was damaged so I ruled out this problem.

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  • One of the biggest drawbacks that can cause your car to start emitting white or bluish smoke is the gia of the valves that with significant wear allows the oil to pass into the combustion chamber and causes the smoke to come out of the exhaust. be bluish but this was not my case so I also ruled out this inconvenience

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  • The pistons, this is one of the most difficult to find if you have just done the work on them such as ringing or rectifying, although there are many people who do not do these jobs as they should be, and when the oil goes up to the combustion chamber when burning the gasoline burns the oil too, something that was happening to me, but the detail is that the amount of oil was so great that it seeped through the exhaust valves and ended up filling the exhaust manifold with oil and when the engine heated up it burned all the oil creating an impressive smokescreen.

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Yes, if your car is emitting large amounts of bluish smoke, it is not a bad idea to rule out each of these possible causes, since in the long run they end up damaging the engine and causing greater wear on the internal parts.

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In my case, this week I will send the block to perform a rectification of the cylinders and the crankshaft. I hope that this will solve my problem, since my cylinders are oval and this causes the oil to rise into the combustion chamber.

thanks for reading my post



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5 comments

If the smoke is pure white, not bluish, there are two other possibilities you might consider. One of that the fuel mix is too rich, which is more likely on vehicles with traditional carburettors, less likely if you have fuel injectors. The other is that water might be getting into the cylinders from the cooling system, due to a leaking head gasket, faulty-o-ring or (in a rare worst case situation) a damaged head block.

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Personally, it happened to me that the oil rose through the pistons and entered through the exhaust valves, passing all the oil to the intake manifold. Imagine the amount of smoke that this caused.

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Wanted to say it, but you did say it alright, good one alonicus :D

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Sources are poorly cited, the text is too vague at parts, is better than nothing but if you put more personal photos of your car instead of a random photo of internet you would have being more heavily rewarded for your work(I think).

When you're going to cite a source you have to do it from ITS SOURCE, doing it from a Google images is not valid and is considered plagiarism, be careful and if you can change those i advise you to do it.

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