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White Smoke out of Exhaust! Help

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Old 06-11-2018, 12:40 PM
Adrienne Smith
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White Smoke out of Exhaust! Help

So i'm having an issue with my 2011 mini s and was wondering if i can get some info from you all... here it goes.

Check engine light was coming off and on for a couple weeks. I took it to my local mechanic he said the O2 sensor was kicking it off and on. He reset it, ever since i have had two other mechanics look at it and nothing. The check engine light has not come on and no one can find the O2 sensor problem in the diagnostics. Since then (or it could have been longer) I have had white smoke come out of the exhaust, mainly when i'm idling for a few and take off. Big cloud of white smoke. It is burning some oil quicker than usual. My oil light came on 2K miles before i was supposed to get it changed. There is about 120K miles on it.

I had another mechanic look into it today and said it drives fine but he did see white smoke, suggested some stuff he could do the next oil change. Could this the turbo going bad? Bad piston rings? Valve seal?
Any help would be greatly appreciated. Thanks!
 
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Old 06-11-2018, 12:41 PM
Adrienne Smith
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Oh also, i checked the coolant. The tank was full.
 
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Old 06-11-2018, 02:12 PM
gumbedamit
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I have an R53, just reading your post. Usually White smoke is coolant, blue smoke is oil.
 
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Old 04-21-2019, 04:28 PM
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Zachary Nguyen
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Ever figured it out? I have the same car and same thing, idle for a bit then I take off and there's a white cloud out the back. I did have a coolant leak but I think I fixed it a couple weeks ago. I don't know how long old spilled coolant would evaporate back there for.
 
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Old 04-21-2019, 05:55 PM
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It may be oil burning. Oil burning can look like a water leak, because it is very light colored, almost white, but it lingers in the air, unlike a water leak.
You may need a new PCV valve, which is incorporated in the head cover, That means new head cover.
 
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Old 04-21-2019, 06:04 PM
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Zachary Nguyen
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I actually just changed to a new valve cover a couple weeks ago. Is that the same thing? There was oil in some spark plug tubes and stuff so maybe i’m just burning off the lingering oil that was left over from when it was leaking?
 
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Old 04-22-2019, 07:37 AM
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Yes, head cover and valve cover are the same thing, MINI calls it a head cover.
Try taking it on a long drive and see if it goes away.
 
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Old 04-22-2019, 10:02 AM
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I had white smoke coming from my R56 JCW after they replaced my thermostat housing because of a coolant leak. After a week or two of driving, the smoke went away.
 
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