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Old 04-21-2013, 07:34   #1 (permalink)
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Blowin black smoke and it ain't a diesel

I got a 99 f250 v10 and I noticed it blowin black and white smoke when I take off, it ain't pourin it but any ideas what it could be? Big or small problem?

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Last edited by R.S.LOGAN; 04-21-2013 at 12:54. Reason: moved post
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Old 04-21-2013, 12:55   #2 (permalink)
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Re: Blowin black smoke and it ain't a diesel

You losing any coolant ?
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Old 04-21-2013, 17:53   #3 (permalink)
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Re: Blowin black smoke and it ain't a diesel

Any codes?
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Old 04-21-2013, 18:39   #4 (permalink)
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Re: Blowin black smoke and it ain't a diesel

Not losing any coolant and no codes. Could it maybe be worn piston rings?
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Old 04-21-2013, 19:10   #5 (permalink)
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Re: Blowin black smoke and it ain't a diesel

If it was excessive fuel a code would be set as detected by an OX sensor.
Check for fuel in the vacuum line to the fuel regulator. That would be a leaking diaphram and fuel right into the intake.
White is coolant since it does not burn.
Worn/hard intake valve stem seals will allow oil in along with the air and fuel.
If the smoke clears, that may be the cause.
Trans fluid would also tend to be whiteish as it's combustion point is much higher.
All this has to pass through the cats and could contaminate them if left go to long.
Good luck.
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Old 04-23-2013, 06:46   #6 (permalink)
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Re: Blowin black smoke and it ain't a diesel

How many miles do you have on the engine?

If no CEC, the problem is either worn rings or valve seals (black smoke), and/or a blown head gasket (white smoke). I don't know how you can see both simultaneously, but a compression and leak down test will identify the problem.

There is no reason to have transmission fluid in your engine as these engines do not have a vacuum modulator.
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Old 04-23-2013, 08:52   #7 (permalink)
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Re: Blowin black smoke and it ain't a diesel

Worn piston rings or valve stems / oil seals usually cause blue smoke .This explains more about black smoke ,

How to Repair Black Smoke Engine Exhaust System - 2CarPros
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Old 04-24-2013, 07:25   #8 (permalink)
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Re: Blowin black smoke and it ain't a diesel

Logan is right on, but sometimes it's difficult to distinguish between blue and black smoke. If no CEC code(indicating a fuel mixture problem), do a leak down and compression test to positively identify the problem before tearing into the engine. A fuel mixture problem will usually cause a code and rough running.
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Old 04-24-2013, 13:35   #9 (permalink)
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Re: Blowin black smoke and it ain't a diesel

If burning oil bad you can also sometimes smell it , quite distinct smell . If you ever sat behind one in a traffic jam you'd know what I mean .
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Old 04-24-2013, 22:40   #10 (permalink)
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Re: Blowin black smoke and it ain't a diesel

Any smoke when you first fire it up? I know the rule of thumb with older rigs is blue smoke on fire up is valves. .and black or blue or a mixture of the two is rings
.. .just a thought. .not sure how it will corporate with your newer rig.
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