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Old 08-26-2014, 05:37 PM   #1
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White smoke out of tail pipe ?

I have a 2011 class A with a ford v-10 engine and the first 3 years have not had the following problem .
This spring when i fired it up it burns white smoke out the tail pipe for approx .5 minutes then clears up .
The engine does not use any oil and the antifreeze container is right up.
It as been doing this most of the summer when it sits for a period and ford have never heard of this happening before .
Most people tell me its nothing to worry about as it is condesation only but why is my rv mainly doing this why after 3 years and 20000 miles later --thanks Terry

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Old 08-26-2014, 05:43 PM   #2
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Glad you're aboard. Could be that the converter pellets are not what they used to be or coated for any number of reasons. Higher ethanol content in the fuel could be one. Enjoy your adventures and be safe.

Have a wonderful day!
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Old 08-26-2014, 05:47 PM   #3
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Black smoke is fuel. Blue smoke is oil. White smoke is water vapor. If it is not using antifreeze, just sit back and chill.
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Old 08-26-2014, 06:05 PM   #4
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Might be worth while to take a look at your muffler.
There should be a water drain out hole, at the lowest point at the rear of the muffler approx. 1/8" dia. if this hole is plugged by rust the water vapor in the muffler that would normally condense and drain out as the muffler cools , would be trapped inside and have to vaporize when the engine is started.
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Old 08-26-2014, 06:11 PM   #5
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Is it vapor that dissipates or is actually smoke that floats away. If it's smoke and does this on start up, it's often valve guide seals. A small amount of oil will drip past them when parked. Once you start the engine, it burns off the oil that dripped by. It won't show up as using oil, because so little of it gets past the valve guide seal.
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Old 08-26-2014, 06:38 PM   #6
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Hi guys as i checked the small hole in the muffler and it is not plugged and like the last guy ( don ) said it could be valve seals and if that is the case should i be seeing ford on this before the 5 year power train warranty is over if the 5 year includes valve seals ---terry
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Old 08-26-2014, 06:50 PM   #7
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If this happens all the time just before the engine is at operating temperature, it's most likely the normal combustion process that is build up in the exhaust system prior to it coming up to a temperature that evaporates it.

If it all goes away after the warm up, there is nothing to be concerned with. Also with no noted oil, or coolant usage, you've verified there is no mechanical issue you should be concerned with.

In cooler out side air temps, you'll see this happen with all vehicles, diesels and gas.

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Old 08-26-2014, 07:02 PM   #8
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Originally Posted by shade View Post
Hi guys as i checked the small hole in the muffler and it is not plugged and like the last guy ( don ) said it could be valve seals and if that is the case should i be seeing ford on this before the 5 year power train warranty is over if the 5 year includes valve seals ---terry

I am going to agree with the valve seals. Contact the ford dealer and have them check it. That is why you have a warranty.

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