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Discussion Forum
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255 slobbering oil

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Fieldman12

05-11-2003 00:55:01




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I have a 1976 MF255 with the A4-236 motor. It has 1700 original hours on it. I have had it about 4 years, but never put very many hours on it due to having two other tractors. It has never been run very hard since I have had it and I don't believe it had a hard life before. I have noticed since I have had it that occasionally it would blow a little blue smoke out the exhaust when revving the motor. It always has had oil around the exhaust manifold. I have tried to work it hard this year to try to get it to clear up, but the 6' disk is not much of a challenge for it. It is using about 1 quart of Rotella T 15w-30 oil about every 16 hours. Even though the exhaust manifold looks allot cleaner since working harder, I am convinced it still is not enough of a load. I am thinking about having it hooked up to a dyno for a few hours to work it hard in hopes of cleaning the slobbering up. It could be internal damage also, but due to the oil around the exhaust manifold I think it is just slobbering. I can not even get it hot enough mowing, or disking to make the breather tube smoke. The tube has been checked and is clean, It has all new air filters also. I hope nothing is wore out due to lack of use. Some times sitting is worse than using it every day. Any suggestions??

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Big Dean

05-11-2003 15:50:55




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 Re: 255 slobbering oil in reply to Fieldman12, 05-11-2003 00:55:01  
We had a lot of problems with the MF255 with the AD4-236 engines slobbering oil when they were new. we would run them on the dyno hard till the temperature started to clime up near the red then slack off till the engine cooled back to normal then do it all over again for a couple of hours that usually stop the problem but we had a few we had to put new rings in to stop it. Before we would tear one down to put in rings we would throw 2 or 3 hands full of talcum power in the intake while it was pulling hard on the dyno that would sometimes make he rings seat.

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