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Old 03-28-2012, 08:25 PM   #1
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whitish smoke from exhaust, no coolant in oil

ok, so the (turbo'd) svt started smoking a while back. its got 80,000 miles on it so figured I have some work done to it. had the valve seals replaced and a general overall check of the head done. pulled all the pistons out, checked the rings, those were good. put everything back together, correctly, and it started right up, with zero fault lights. but the thing still smokes, runs good, fells like a little better actually. I do need to get the tune updated again since I put the compression back to factory. the turbo didn't look like it was leaking into the exhaust when I took it off and hardly any play in the shaft. I did rebuild it a while back sooooooo who knows how I did with that, looked good tho. and like I said, the oil is clean, not milky. EDIT... forgot to say that is doesn't start smoking right off... maybe about a minute after running.

where else to look/check for the problem? thanks


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Old 03-28-2012, 09:41 PM   #2
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Look at your spark plugs
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Old 03-28-2012, 09:42 PM   #3
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Are you losing coolant? White smoke is an indicator of an internal coolant leak into a combustion chamber.
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Old 03-28-2012, 10:57 PM   #4
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plugs are newer, how would that cause smoke?

I'll look at the level of coolant in the AM. thanks for the suggestions
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Old 03-28-2012, 11:55 PM   #5
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The plugs aren't causing the problem, they let you see what's happening in the combustion chamber and tell you what the problem is.

It will let you know if you are burning oil, have a coolant leak into the combustion chamber, cylinder to cylinder variations in fuel, detonation, etc.

In your case, you'll know if you are burning oil or water, and which hole it's happening in.
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Old 03-29-2012, 12:10 AM   #6
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head gasket

head gasket is bypassing coolant from a coolant passageway into the combustion chamber. always a tell-tale sign when you get white smoke from exhaust. Not too bad a job to replace on a focus but requires proper removal and reinstallation procedures and torquing.
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Old 03-29-2012, 08:58 AM   #7
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yeah, I figured coolant was getting in there somehow. Just sucks, cause its a new gasket and everything was torqued to specs. Dont feel like taking the head off again!!

I'll pull the plugs after work today, initially when I took them out to have everything worked on they were all dry.

Will also try to get a video just for referance and figure out how to post it on here.
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Old 03-29-2012, 12:29 PM   #8
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It's about the color, deposits, and smell on the plugs, don't expect them to be wet.
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Old 03-30-2012, 01:14 AM   #9
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If you are running proper percentage of antifreeze then you should be able to smell the sweet smell of burning antifreeze in the vapor. You may even find a green deposit from the dye on the plug of offending cylinder.

If coolant leak, eventually the steam generated will pit the cylinder wall and destroy the motor. Or enough will leak at shutdown to make hydrolock and broken rod then.

Could be pure oil, plug will be black and possibly wet then.
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Old 03-30-2012, 08:34 PM   #10
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Still want to know if your car is going through coolant. Looking at a spark plug is never a good indicator of much of anything. It can point you in a vague direction but I would absolutely never base a diagnosis off of a plug.

You said you just replaced the head gasket. Did you have the head resurfaced while it was off? And how did you clean the gasket material off the block?

If you are not losing coolant I would dismiss the possibility of a head gasket leak entirely. Especially if its not overheating.
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