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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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How much smoke

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DumbDumb

10-24-2007 06:51:38




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I have a 1600 oliver I recently purchased. It had the motor rebuilt, all used tractor have just had an overhaul or so it seems. When I run the tractor it seems like it blows some smoke out the bottom of the right hand side of motor. I am guessing there is a blow by pipe down there. It is not really smoke with a noticed color, but you notice it real bad if operated at night where you can see it in the headlights. I would not think a fresh over haul to have blow by, but I am not at all familiar with older diesel tractors. It fuel smokes a fair amount when it runs as well, and blue smokes alittle until it gets good and warmed up. I was told the fuel smoke was due to the pump being turned up 10%. The idle is also rough until about 1500 rpm. I know there is probably no way to diagnose sight unseen but any thoughts would help put my mind at ease. Thanks for any input. Dumb Dumb

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Dumb Dumb

10-24-2007 10:08:24




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 Re: How much smoke in reply to DumbDumb, 10-24-2007 06:51:38  
The overhaul I know very little about. Here is the story I was told. The tractor was in the hands of the original owner with 4200 hours he went in to freshen it up and after the overhaul it developed a miss. He had the injectors rebuilt and the pump rebuilt, reason for doing so he was sure he did his overhual correct. The miss was never found and the tractor was sheded and left unused for several years. He eventually traded it to a dealer and the it was purchased as inoperative or missing not sure which, from the guy I bought it from. He took the head off found everything to be fine abd id'd the bad hole. Pulled the pan and the bad piston, the ring lands were caracked on installing it cuasing the failure. He showed me a near new piston with the described defect as proof. He fixed it via new piston and rings reassembled run it about 30 hours and sold it to me. Claimed he bought it for a money maker. I have a student in my class that was present and working for him at the time of the fix and he seems to say the same story as to the fix that was made. I have run it for maybe 10 hours since buying it 6 weeks ago. The oil looking smoke clears after it fires and warms up but there seems like there is some blow by coming from under it. I don't like the turned up injector part, but have no idea how to reverse this condition. I have no knowledge of disels, some gas engine knowledge. I have rebuilt ford v-8's back in the day for old mustangs and such so I am not mechanically stupid but very diesel tractor stupid. My only diesel tractor to compare it to that I own and operate is a 850 john deere. But that little three cylinder yanmar seems to be a different cat. Sorry for the long post but thats how it al got started and where I am to date. It runs good but seems to some smoke out the bottom, and plenty of fuel smoke if you work it. I do mostly loader work operating at 1500 rpm. Sunday I bush hogged for three hours but a 6 foot hog is no work out for this beast. So far the oil has remained clean and has not changed in level. Thanks for any help.

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RAB

10-24-2007 09:39:19




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 Re: How much smoke in reply to DumbDumb, 10-24-2007 06:51:38  
Perhaps rings not bedded in. Not enough load. What do you call an overhaul? New rings in an oval bore and pistons with too wide ring clearance? Sounds like there is something wrong. Could be anything from an injector clean and reset to a proper overhaul. Why waste fuel for a few extra horses - turn it down again. My reply should not put your mind at ease. Sorry about that.

Regards, RAB



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J Schwiebert

10-24-2007 09:31:18




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 Re: How much smoke in reply to DumbDumb, 10-24-2007 06:51:38  
Man I hate to hear that. At the dealership I woked at we had very good luck with 1600 models in general and engine wise I would perfer the diesl about 10 to 1. First thing. Get yourself a 9/16 socket and remove the 4 nuts that hold the exhaut manifold in place and slide it up so you can see the smoke come out of all six exhaust ports. You probably will not even need to remove the muffler. Put your ear plugs in and start the tractors. Tell me what color smoke comes out of which port and which one is tha last to quit smoking. Do you work it hard? Your turn. Maybe enclose your e-mail as well. J.

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