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Old 10-20-2012, 07:32 PM   #1
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White smoke with a 6.4 Ford diesel

Anyone else with a 6.4 diesel have the white smoke phenomenon occur during a regen? I just had this occur this week with 30k on the odometer. Other owners have told me that their dealers are telling them it moisture/condensation that is trapped in the converter and gets burned off during a regen. I have an appointment with the Ford dealer on the 23rd so it will be interesting to see what they tell me.
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Old 10-20-2012, 07:47 PM   #2
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the following link offers some insight:
Diesel Engine Smoke Color - What Means What - Diesel Bombers
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Old 10-20-2012, 08:11 PM   #3
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Oakman, I dont know what a regen is? I'm a 7.3 owner and for us if its white somke, thats normally unburnt fuel. Does this happen on startup? If so its prolly a glowplug relay or several bad glowsticks. If its light color (could be mistaken for white) it may be oil bypassing the turbo and would lead to a turbo rebuild.
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Old 10-20-2012, 08:22 PM   #4
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this months diesel power mag actually talked about that said moisture builds in the inner cooler and causes that. especially when you drive it easy and in moist air.
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Old 10-20-2012, 08:38 PM   #5
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Quote:
Originally Posted by rotorhead1250 View Post
Oakman, I dont know what a regen is? I'm a 7.3 owner and for us if its white somke, thats normally unburnt fuel. Does this happen on startup? If so its prolly a glowplug relay or several bad glowsticks. If its light color (could be mistaken for white) it may be oil bypassing the turbo and would lead to a turbo rebuild.
Regen = Regeneration of the Diesel Particulate Filter (DPF) on the 6.4 liter Fords. During a regeneration, extra fuel is dumped on the exhaust stoke to increase exhaust temperatures to burn out the accumulated soot in the DPF. This is the reason for the poor fuel mileage of the 6.4ís. When the engine goes into DPF cleaning a message is displayed on the message center.

The white smoke occurred twice during a DPF cleaning that I interrupted by returning to our campsite before it was finished. This was also a rainy/humid day so I can actually buy into the condensation explanation. The white smoke only occurred at lower speeds for a short time and once the DPF cleaning was complete it didnít occur again. It was enough white smoke that it looked like a gasoline engine with a blown head gasket for about 10 seconds.

It was embarrassing to be driving in a state park and belching out a ton of white smoke.
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Old 10-20-2012, 08:41 PM   #6
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this months diesel power mag actually talked about that said moisture builds in the inner cooler and causes that. especially when you drive it easy and in moist air.
Thanks for that info, I'll have to run out and get a copy of that magazine and read the article. I think it's interesting that this is the first time this has happened in the 30,000 miles I've driven it.
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Old 10-20-2012, 08:54 PM   #7
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Lesson learned. I didn't know that about the 6.4. Sounds like Bobby has you heading in the right direction. Do you have a loss of power while it regens? I guess the added fuel mixed with condensation could cause the white smoke. Hey, if folks look at ya funny, just smile and wave. Can't get upset with someone thats waving at em.
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Old 10-20-2012, 09:06 PM   #8
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I've driven this truck enough to know when it goes into the regen process without having to look at the message center. I have to push the accelerator a bit farther to maintain the current speed. My regens usually last for 20 to 30 miles.
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Old 10-20-2012, 11:15 PM   #9
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Another reason for not buying a recent model diesel!

In my experience. white smoke usually indicated a blown head gasket that allowed coolant into the combustion chamber. I had that happen on two of my cars over the years (a 1968 Rover 2000 and a 1965 MG 1100).

White smoke would be heart-attack inducing for me.
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Old 10-21-2012, 12:17 AM   #10
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Quote:
Originally Posted by Oakman View Post
I've driven this truck enough to know when it goes into the regen process without having to look at the message center. I have to push the accelerator a bit farther to maintain the current speed. My regens usually last for 20 to 30 miles.
One of my neighbor's and I were just talking about this the other day...he started noticing this phenomenon on his 6.4 around 50k...but only on rainy days???......he has since deleted his dpf, so n more regens or seafoam exhaust...lol....

On another note, when my 6.7 goes into regen i cant feel a thing.....and the little dash message is a joke....blink n you miss it!....lol
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