Posted by TJ in KY on September 30, 2011 at 08:14:29 from (74.139.91.125):
In the last 2 weeks I have rebuilt the carburetor and adjusted the governor on my MF 230 gas tractor and it was running very good so I decided to do a little bush hogging. I got a little ways away from the barn and all of the sudden it started running real rough. Like maybe running on 2 cylinders. It kept running so I opened it up to full throttle and it was still rough but by the time I got to the barn it was running smooth again. I checked points and plugs all seemed fine so I headed out to bush hog again.
I thought maybe a valve got stuck or a piece of carbon holding a valve open, I don�t know. The tractor does not get much of a work out, but it seems smooth as silk now. I thought about adding some ATF or marvel mystery oil to the gas for lubricating the valves upper cylinder area, anybody got any thoughts on that. How much should I add??
It ran fine for an hour and a half, better than it has ever run, in fact, and then a limb or something knocked the valve stem off one of the rear tire and fluid starts going everywhere. I was able to force a bolt in the broken off stem, and limp it back to the barn, but the rim is shot (2 by 4 inch area gone) so I guess I will be looking for a source for a new or used rim (6 loop style). Always something.
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