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Un-burned diesel 135

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TB in TN

01-21-2000 19:46:35




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My 135 has black gunk coming out of the exhaust.It is liquid,a little like tar,but not as thick.It isnt oil,Ive checked. I bought this tractor a couple months back and other than the thermostat have done nothing that should effect it. The thermostat I took out could have lasted longer,but I was told it was a likely suspect.I did however change it. HELP!!!!




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Clarence Carhill

02-01-2000 18:46:18




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 Re: un-burned diesel 135 in reply to TB in TN, 01-21-2000 19:46:35  
TB... I think if you put a deisel fuel additive in your fuel, especially during the cold seasons and at times when you don't use it hard, you will find that it will clean your injecters and make your tractor run so much better.... I use it the year around. It's inexpensive compared to injector cleaning and repair. It only takes a few ozs to a tank of fuel.



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Greg M

01-27-2000 20:08:15




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 Re: un-burned diesel 135 in reply to TB in TN, 01-21-2000 19:46:35  
I have a Super 90 that started doing EXACTLY the same thing. It scared the crap out of me because I had visions of all kinds of mechanical malfunctions happening. I started checking around and found that the most likely cause was a worn diesel injector. The injector isn't so bad that the engine runs rough, but it is worn enough that when I idle it around and baby it around like I'm prone to do that it loads up with this oily substance dripping out of the bottom of the muffler. While I haven't had the injectors cleaned and/or rebuilt yet I have stopped this mess by not idling the tractor for very long at all. I now run the throttle at least 1200 rpm or higher now and it doesn't seem to be loading on me anymore. One thing to check for. On my 90 it runs almost smooth without a load on it. There is a VERY slight miss in the engine when I don't have it loaded. When I hook it up to the mower or baler or pull wagons with it the miss is gone and it runs very smoothly and is a pleasure to drive. I don't think you have a big problem here at all. Sounds like you just need to have the injectors cleaned at the least, rebuilt at the most.

Happy farming.

Greg M

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TB in TN

01-30-2000 17:21:02




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 Re: Re: un-burned diesel 135 in reply to Greg M, 01-27-2000 20:08:15  
Thanks, fellas I am a novice at working with a deisel.This is the
best thing a stranger has done for
me in a while. Ill try my best to help somebody
else to pay you back

Shore-preciate-it TB-in-TN



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Merle

01-23-2000 14:33:19




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 Re: un-burned diesel 135 in reply to TB in TN, 01-21-2000 19:46:35  
TB
It sounds like you just need to take the old girl out and work the crap out of her for a while. Service her good and hook her up to a plow or disk for about half a day. Good luck. Merle



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Tom S.

01-22-2000 06:21:21




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 Re: un-burned diesel 135 in reply to TB in TN, 01-21-2000 19:46:35  
Water condensing in the exhaust and blows out with soot when you start it. Use the tractor. Tom S.



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TB in TN

01-22-2000 21:40:54




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 Re: Re: un-burned diesel 135 in reply to Tom S., 01-22-2000 06:21:21  
The soot looking liquid in my 135
lasts past start up even when the temp is at normal operating range. I do thank you very much for your advice,Tom. Shor-Do-Preciate the help TB in TN



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Tom S.

01-23-2000 13:03:26




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 Re: Re: Re: un-burned diesel 135 in reply to TB in TN, 01-22-2000 21:40:54  
One of the most prominent byproducts found during complete combustion of a hydrocarbon based fuel is H2O. Driving the tractor will keep temps up in the exhaust that will evaporate water, rather than just cause them to condense and collect in the muffler. Unless it's a whole bunch and the radiator is getting lower, it can't come from much anywhere else.
P.S. Water will condense in the crankcase also, from limited use and poor ventilation, but will form an acid when combined with blowby and deposits in the oil. Class dismissed. Tom S.

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Tong

02-19-2001 03:56:52




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 Re: Re: Re: Re: un-burned diesel 135 in reply to Tom S., 01-23-2000 13:03:26  
How much H20 would be generated in a liter of diesel burned by diesel engines? How much of the other by-products (SOx, NOx, CO, diesel particulate matter, etc) would be generated in such combustion?



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