Darned Diesels

Allan in NE · Jul 27, 2009

Combine started missing under a heavy pull yesterday. Every time the governor kicked in, it would drop a cylinder and blow black smoke.

Had to clean that screen in the sediment bowl.

What's up with that? I just cleaned that thing 5 years ago! :>)

Allan

VADAVE · Jul 27, 2009

Well you know there is a microbe that grows in diesel, particularrly diesel that sets for long periods of time.
I load my fuel up with a product called KILLEM. It's an insectcide that kills that darned thing. Without it you going to be cleaning that screen every little bit.

TGIN · Jul 27, 2009

It never gets to rest on the down hill side . Around here ya get a extra 1000 hrs out of a rebuild from the disk pushin the tractor half the time .

greygoat · Jul 27, 2009

I agree with VADAVE, Microbes can plug your
filter elements, and a combine, sitting for
many months, is a good canditadate !

Anonymous-0 · Jul 27, 2009

You need to take it in to Government licensed repair facility . There they will hook it up to the dyno and computer interface system. It will more than likey need a new cat converter and particulate filter . $$$ Also they will install the new required gps monitor system, so they can take your usage and fuel consumption .If you go over your alotted fuel credits you will get a fine . Once repairs are completed you will need to show proof of operators training license and all class updates, insurance card , and your Farm license and permit. Oh ,and don't try the "I'll just keep my old simple combine " Older models will be confiscated and melted down . Only newer fuel efficiant and safety approved combines will sold . Scary ain't it ? lol

Anonymous-0 · Jul 27, 2009

Why would it just drop one cylinder? How can he Roosamaster rotary pump lose one cylinder? With fuel starvation why does it blow black smoke? Please explain for future diagnosis of problems.

Anonymous-0 · Jul 27, 2009

Fuel starvation will affect the timing on the pump due to low pressure. That will make it smoke and misfire..

Anonymous-0 · Jul 27, 2009

Thanks low budget. It is refreshing to talk mechanics instead of politics. I still don't see how a rotary pump can drop one cylinder.

Fordman6442 · Jul 27, 2009

I would think maybe you should check your air filter also. Has it been 5 years to??
Don from Canada

HENRY E NC · Jul 27, 2009

Actually that microbe is probably algae that grows in diesel fuel. The Algae actually grows in the moisture suspended in the fuel in minute water drops. There are lots of products hat protect the fuel when stored. Jave seen lots of above ground tanks bloom in the heat of the day. The moisture comes from condensation. Henry

Allan in NE · Jul 27, 2009

It's not the same cylinder on every turn. It's kind of a "sputter" thing.

Engine is starving, so the governor is throwing everything it has at the engine, hence the black smoke. Cylinders that do fire are then overfueled.

Allan

Allan in NE · Jul 27, 2009

Yeah,

That was the first thing I thought of. Precleaner was pretty full; filter was okay tho.

Darned thing just acted like a plugged fuel filter without the engine speed-up. So, I swapped one out but it didn't help.

Sure runs good now tho. :>)

Allan

Anonymous-0 · Jul 27, 2009

Thanks for the reply. I wish I had your grasp of mechanics.

JDemaris · Jul 27, 2009

Obvioulsy not the problem here, but the Roosamaster/Stanadyne rotary pump can get a skip on one cylinder via several ways. One bad lobe on the cam ring, a gouge or scratch in the distributor head near one discharge port, etc.

Steven f/AZ · Jul 27, 2009

Combine? Smoke? Now you have smoke pollution to go with the dust pollution of operating that thing!??!!?

LOL - 5 years is a pretty good run for cleaning the screen. We usually change fuel filters once a year on everything - used to wait until we started losing power or other problems, but after pulling the filters one winter on the 1086 and finding ice and slime I just do it once a year.

Allan in NE · Jul 27, 2009

Hi Pard,

I've been givin' this a lot of thought fer the past few minutes.

I'm not really sure now that I DID clean that thing back then....................... :>(

'Member I was planning to....... :>)

Allan

Anonymous-0 · Jul 27, 2009

You and all of us wish you had a grasp of anything.

Billy Shafer · Jul 27, 2009

You sound like the guys that would run out of gas when I was a fuel leader. But sarge we put five gallons in a week ago. The alge in fuel can really mess things up. I had one where we had to drain and strip the fuel system. Every thing from the tank to the filters was removed and cleaned. It was like cleaning out mud.

Anonymous-0 · Jul 27, 2009

Unlike you who has a boundless grasp on ignorance!

Germ · Jul 27, 2009

You have posted that you TAUGHT ag mechanics and auto mechanics, and you don't have a grasp on the basics?

GREGinMO · Jul 27, 2009

You dont have five year old guitar strings too, do you Allen? LOL

blinwmiaol.com · Jul 27, 2009

You know, I at first felt some sympathy for you for the comments above but then I remembered you made the same stupid kind of comment to Gene when he was asking a very reasonable question about his IH. Guess if you weren't a dick to other innocent posters, you wouldn't get it back in turn.

Anonymous-0 · Jul 27, 2009

Maybe he was home schooled...or maybe he couldn't find the answer in that remedial history course he recommends as the cure-all for ignorance.

Anonymous-0 · Jul 28, 2009

Diesels do strange things sometimes when starved for fuel. Allan described some and Mr. Maris is very knowledgable about diesel systems. There are also timing advance systems in most injector pumps that work off internal pressure.
Funny how some people are real good about air filters but ignore the fuel filters until it wont run.
I skip over most of the political posts here so I dont really know or care about your views on that. I do enjoy many of the other OT posts however.

Anonymous-0 · Jul 28, 2009

If you want to stop talking politics, teach, all you have to do is shut your mouth! Or put mittens on!

Guido. · Jul 28, 2009

Hello Allen,
With dirty fuel the auto timing advance can stick. The timing does not advance and there will be late engine timing and the result is Black Smoke(UNBURNED FUEL). Whichever cylinder gets short chagned on the right amount of fuel, it will miss. That is why is never the same one. Take care of the fuel system as the clearances are so small that you are asking for trouble.
Guido.

Darned Diesels

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