Steam?/White Smoke on Cold Startup - Ford Powerstroke Diesel Forum
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Old 01-22-2014, 01:27 PM
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Steam?/White Smoke on Cold Startup

Ok, Someone calm my worries and fears that this is typical of a Diesel in extreme cold temperatures? I have had my diesel since new and have not really noticed this before, but then again I had not deleted the truck till this past summer so I want to be sure this is not something worse. But basicly what is happening is, I will plug my truck up and it powers on a timer, so the truck warms from 5:00am till 7:00am, I get in, turn the key for the plugs and then Turn it over. I allow the truck to warm up and it will go into high idle. At that point in the morning the truck wants to "smoke" really strongly like a gas car/truck that is cold. Now I have only see this happen when our temperatures have been at freezing or way below which has been in the past couple weeks here in Virginia. Today it was the worst,before and after when I allowed the oil and coolant temps to get around 100 before taking off down the road.

My commute is approx 12-20 miles in the morning. This morning in the 12 miles to get to work the truck pretty much "steamed/white smoked" on throttle till I got to work when the truck was up to full temp I would assume. I have not seen this happen after the truck is fully warmed up except for a few occasions on low throttle I will see a white haze spit out the exhaust before black smoke and not at idle at all. My truck is deleted with a 5" exhaust and intake and a Mini Maxx. I have not done the EGR delete yet and am wondering if that could be causing some of this, or if this could be a far more serious coolant leak issue or other? (I have not smelt anything really sweet around the exhaust, just fuel)

Now to add onto this I noticed yesterday that my coolant in the reservoir was under the cold fill line when cold. I have in the past few months had both rad hoses replaced to cover the bad o-ring leak that they had, which my hoses were leaking. I do not remember however if the reservoir was completely topped off or not. But did go today and got some Gold Fluid and mixed and topped off the tank just to watch it and see if it goes anywhere. When filling the tank the venturi t hose gurgled it in some for a bit if that matters? Also, no codes show up in the mini maxx reader, and no loss of power or anything else. Back when I had the DPF and everything on it, this was a few years ago, the truck went into limp mode and died while I was out and about. Dealer looked at it and said the EGR sensor went out, they replaced everything under warranty and I was on my way. Not sure if that adds to this but just FYI.

Ok so now, I have attached a pic of the tank before top off at cold and also a video of the "steam/whitish blue smoke" I am seeing on a cold start. This was taken after my truck had been sitting at work for almost 7.5 hours in around 17-20 degree temperature outside. It did not smoke as bad this time and cleared up within a few minutes. I tried to see if I saw any on throttle down the road and think I did some before it would blow black smoke mixed in under boost. Let me know what you think and If I have anything at all to worry about. I understand that Diesels will "steam" out the exhaust for a while in really cold temps so just want to be sure. I have a coworker that has a deleted automatic with a different tuner and exhaust and he said that he has not seen it smoke that he remembers.

Cold Fill under the line, before adding some

Video of the Exhaust Smoke

Last edited by Airborne29th; 01-22-2014 at 02:04 PM.
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Old 01-23-2014, 02:30 AM Fanatic

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I don't have a long winded response to add but I have a 2008, similar mods but my EGR is deleted. Mine will emit a light gray smoke while it is warming up in the extreme has been under 20 degrees here lately, as low as 0. It doesn't smoke at all once it is warmed up and i'm driving though.
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Airborne29th (01-23-2014)
Old 01-28-2014, 08:54 PM Rookie

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The Way It Sounds To Me IT Is Just Fine. My Deleted 6.4 Does The Same Thing The Blueish White Smoke You See Is Just Atomized Unburnt Fuel Due To The Cylinder Being Cold. Once It Warms Up It Will Turn Back To Black. The SteaM U See When Your Driving Is Completely Normal Both My 7.3 And 6.4 Steam When It Gets Cold.
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Airborne29th (01-29-2014)
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