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Discussion Boards > Active Subjects > Messages as Posted > John Deere Review Forum

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 01-05-2005, 15:28 Post: 103539
Xpress



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 engine smoke

I was wondering if it is normal for there to be some black smoke from a diesel under load. I was working a JD 1050 with 650hrs pretty hard this weekend and I noticed some smoke after running the loader fairly hard.

The smoke was most evident when the engine was settling back to idle. There didn't seem to be any power loss either. Is this normal or indicative of an engine weakness or problem? I have been running Power Service additives as well.

Has anyone else experienced this?






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 01-05-2005, 15:41 Post: 103540
bmlekki



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 engine smoke

When she's running hard under load you'll she the black smoke. Hows the air filter? I'm a little suprised it was still black after ideling?






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 01-05-2005, 16:49 Post: 103544
DK35vince



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 engine smoke

My JD 850 when under heavy load will throw the black smoke pretty good. Always has.
But it runs real well and its fun trying to make it belt out the black smoke, so I like it just the way it is !!






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 01-05-2005, 21:14 Post: 103579
Chief



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 engine smoke

It is normal to get black smoke under heavy load as the govenor in the injector pump adds more fuel to maintain rpm under the load. It should not be smoking much at idle. Allow a diesel to idle for prolonged periods can cause black smoking as unburned fuel can build up in the cylinder and valves (also known as "wet stacking". This is NOT good for the engine especially in very cold weather as it can lead to a bent valve or two.






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 01-06-2005, 06:38 Post: 103616
Xpress



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 engine smoke

I just wanted to clarify the machine didn't smoke at idle but as the rpm's were dropping but I guess it was just the last of the smoke being expelled.

Thanks for the replies.






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 01-06-2005, 07:52 Post: 103620
beagle

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 engine smoke

As mentioned earlier, black smoke from a diesel under load is fuel not being "cooked" as well as it should. If you run it heavy and are producing black smoke, let it run at around 1200 rpm until the exhaust is clear to cook off any excess fuel.

Blue smoke and white smoke are trouble signs. Black smoke is un-cooked fule and should be run clear with out any future problems. Black smoke without working the engine hard is a sign of fuel system problems. As long as you can run it clear pretty quickly after working the engine, should be fine.






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Discussion Boards > Active Subjects > Messages as Posted > John Deere Review Forum

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beagle 1 | bmlekki 1 | Chief 1 | DK35vince 1 | Xpress 2 |

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