Blue smoke on cold start/cold outside

[Coyote machine]

All I know about what I've been getting for fuel for my manufactured in 2010 DK-40 is this: I ask my diesel fuel supplier to bring me winterized off road diesel. I try to only fill my 300+ gallon fuel tank during the winter months so I get 'cut' fuel, which contains 'special sauce' that keep it from jelling like an insole in my boot.
I run the fuel through a water/fuel separator and a 10 micron fuel particulate filter before it goes in my tractor's tank. To date- since 2009, running hundreds of gallons of diesel, absolutely no problems. Note I store my diesel indoors in an insulated sealed tank and my tractor rests on a SwisTrax brand floor covering material over radiant heated concrete floor. It's my most well treated big work machine, (toy too).

 

[liberty2701]

While following this thread, I noticed a boiler plate riveted to the valve cover of my 2012 CK35 hst. It tells me about the engine , emission control system, and what type of fuel to use.

You better have that looked into:cool2:

 

[thorholt]

Mine does pretty much the same thing, although it is a RX6010 tractor, This video was when it was warm outside probably 70 degrees out and the tractor has sat for 12 hours or so, it never does it if it sits for 3-4 hours.
When it is 30-40 degrees out mine smokes as bad as yours, My dealer is aware of the issue and we are watching to see if it gets worse, It has done it since it was new and now has 250 hrs on it and it has not changed.
I believe that it is a injector leaking down.
https://www.youtube.com/watch?v=isWPJLgjaUI

 

[liberty2701]

Mine does pretty much the same thing, although it is a RX6010 tractor, This video was when it was warm outside probably 70 degrees out and the tractor has sat for 12 hours or so, it never does it if it sits for 3-4 hours.
When it is 30-40 degrees out mine smokes as bad as yours, My dealer is aware of the issue and we are watching to see if it gets worse, It has done it since it was new and now has 250 hrs on it and it has not changed.
I believe that it is a injector leaking down.
https://www.youtube.com/watch?v=isWPJLgjaUI

What type of fuel are you using?

 

[Coyote machine]

Mine does pretty much the same thing, although it is a RX6010 tractor, This video was when it was warm outside probably 70 degrees out and the tractor has sat for 12 hours or so, it never does it if it sits for 3-4 hours.
When it is 30-40 degrees out mine smokes as bad as yours, My dealer is aware of the issue and we are watching to see if it gets worse, It has done it since it was new and now has 250 hrs on it and it has not changed.
I believe that it is a injector leaking down.
https://www.youtube.com/watch?v=isWPJLgjaUI

Since you say it doesn't do the smoke thing after 3-4 hours but does do it cold, I would tend to agree with the cause being a leaky injector. They don't have to be off by much to allow raw fuel to be unburned on start up. Have you tried any injector cleaner to see if that has an effect?

 

[thorholt]

Cenex low sulfur off road diesel fuel, Same as I use in all my equipment.

 

[thorholt]

I have only used 911 in it in cold weather a couple times, I bought it new and it has done it since new so I don't think the injectors would be dirty but not really sure, A friend of mine has the same tractor and his does it also but I don't think as bad as mine is.

 

[ritcheyvs]

I really doubt that sulfur content is a factor here. Mechanical IP (non common rail) Diesel engines ran just fine for decades on high sulfur Diesel. In fact, low (and ultra low) sulfur Diesel caused significant problems for rotary IP Diesels and probably increased wear for the rest. I suspect the HHO, like some summer Diesel, contains heavier petroleum distillates that won't burn at lower temperatures (like near the cold cylinder wall). I eagerly await a report on smoke (or absence thereof) with the engine burning only winter-formulated Diesel fuel.

 

[liberty2701]

Here is the latest video of a cold start. I ran about 15 gals of ULSD from the pump with both Howse diesel treat and Power service Gray bottle at the max dosage. It now has in the tank ULSD and Howse only. The start is at an outdoor temp of 15 degrees and only one glow plug cycle. As you can see it smokes for about 10 seconds as compared to 60 seconds in the previous video. Huge improvement. It appears that the HHO was the culprit along with the cold weather starting. The exhaust also has a much more pleasant smell than before. What do you think? I also have a couple of pictures of what I have been doing over the winter. A small logging operartion. Using a Tafjun 35 winch.

How do you delete photos from the manage attachments section? I cannot figure it out.

 

[Highgear]

Would it do better if you had more RPM's at idle ?