Dk50 HSt Blowing blue smoke

ritcheyvs · Jul 18, 2014

Nothing wrong with LSD except it's probably old. LSD actually lubricates better than ULSD.

PoorPlowboy · Jul 19, 2014

liberty2701 said:
The verdict is bad diesel. The mechanic could not believe it. He figured it was going to be a bad injector or something. The diesel looked exactly the same as the diesel they used. No water and clear. I am shocked considering how the diesel was stored and the additives that were used. The bright side is it gives me faith in the tractor. The bad side is that I cannot rely on stored diesel when I need it. I have never had a fuel related problem either gas or diesel. I always take the precautions needed to keep it fresh. I would like to send a sample of the bad diesel to a lab to get it tested for my own curiousity. I cannot use the test swaps since they are for un-dyed diesel. Any suugestions on a lab?

Do you explicitly trust this dealership? Wasn't it just in there for a major repair? Could they have made an error in reassembly and corrected it this visit and used bad fuel as a way to save face? You seem confident in your fuel storage and treatment method with no history of issues. It may be worth the cost to have an independent lab conduct a fuel analysis. Something isn't adding up, in my skeptical mind, since you've been using this same fuel previously without issue. Properly stored and treated diesel simply does not "just go bad" that quickly. I have personally used 10 year old diesel from a bulk tank that was simply given an annual dose of algaecide. I didn't prefer it that way but it was a desperate situation.

liberty2701 · Jul 19, 2014

PoorPlowboy said:
Do you explicitly trust this dealership? Wasn't it just in there for a major repair? Could they have made an error in reassembly and corrected it this visit and used bad fuel as a way to save face? You seem confident in your fuel storage and treatment method with no history of issues. It may be worth the cost to have an independent lab conduct a fuel analysis. Something isn't adding up, in my skeptical mind, since you've been using this same fuel previously without issue. Properly stored and treated diesel simply does not "just go bad" that quickly. I have personally used 10 year old diesel from a bulk tank that was simply given an annual dose of algaecide. I didn't prefer it that way but it was a desperate situation.

That has crossed my mind. I am going to look for a lab to test it.

sdef · Jul 19, 2014

liberty2701 said:
That has crossed my mind. I am going to look for a lab to test it.

This makes a lot of sense under the circumstances. I just checked Blackstone labs where I get all of my oil analyses performed and they apparently only do oil tests.

I did an Internet search search for diesel fuel tests and a lot of hits were produced. The first listed ones seem to be fleet based and a single test or two may be expensive. Following is a link to a home test kit. I would prefer a lab test but this might be viable. Diesel Fuel Test Kit | Fast & easy test for Diesel contamination

liberty2701 · Jul 22, 2014

Here is a little testament about how Pri-D works(not scientific). I got back from the dealer about 6 gals of the bad diesel. I have been using my tractor with the diesel they installed and it has been working great. No smoke hot or cold. I ran the tank to empty and pumped out the last gallon. I then dumped the 6gal back into my 55 gal drum and added a double dose of Pri-d (they recommend this with known bad diesel)and ran the pump circulating it fully. I added it to my tractor and it ran great at 2500 rpm for one hour. I let it cool down completely and started it again and a puff of blue smoke and rough idle occurred for about 5 secs and then it cleared up and ran great. The Pri-D restored the fuel to the point were it runs 100% except for the cold start. Pretty interesting.

Poopdeck Pappy · Jul 24, 2014

Wow. Your tractor is blowing blue smoke. The dealer tells you it's bad diesel, and puts fresh diesel in it and it runs fine. You run through that diesel. Then you add some snake oil to the old bad diesel and put that back in your tractor? I'd like to know what magical properties Pri-D has that it can turn bad diesel into good diesel. Maybe it can turn water into wine also.

Diesel must be really expensive in your area if you're willing to risk your Kioti's engine and/or diesel injection system instead of finding some other use for some old bad diesel.

Sorry for being blunt. I'm as thrifty and hard-headed and the next guy. But I don't believe in being penny wise and pound foolish.

But it's your tractor. You can do whatever you want with it.

liberty2701 · Jul 25, 2014

Poopdeck Pappy said:
Wow. Your tractor is blowing blue smoke. The dealer tells you it's bad diesel, and puts fresh diesel in it and it runs fine. You run through that diesel. Then you add some snake oil to the old bad diesel and put that back in your tractor? I'd like to know what magical properties Pri-D has that it can turn bad diesel into good diesel. Maybe it can turn water into wine also.

Diesel must be really expensive in your area if you're willing to risk your Kioti's engine and/or diesel injection system instead of finding some other use for some old bad diesel.

Sorry for being blunt. I'm as thrifty and hard-headed and the next guy. But I don't believe in being penny wise and pound foolish.

But it's your tractor. You can do whatever you want with it.

Sorry you feel that way. I guess you do not believe in modern chemistry. We have come along way in the last 2000 years.

Notforhire · Jul 25, 2014

To the OP.
I was interested in this post because a similar thing happened to me about two months ago. I was dragging trees and next thing I know I'm getting blue smoke.
Long story short, it's under warranty, so I brought it to the dealer. The tractor has a flexible fuel line, which kinked. They replaced the line, and that solved the problem. I don't understand how that produced blue smoke, but there it is.

Bill

Notforhire · Jul 25, 2014

Double post.

ritcheyvs · Jul 25, 2014

If the injection pump is starved for fuel, the plunger won't be able to deliver the full "shot" of fuel to the injectors at the required, steady, pressure, which results is poor atomization and incomplete burning of the fuel mist. Specifically, the fuel in the center of the big droplets won't burn at all, producing smoke..