Posted by hatrick on November 12, 2011 at 07:22:44 from (199.48.194.238):
So we picked up an MD for scrap value that is complete but stuck. It has been soaking for a week with Kroil in the cylinders. We decided to put it inside and pull the valve cover. All of the valves seem to work. We pulled the rocker arm and thought we would push some air into the cylinders to see what would happen. The air either gurgles or pushes out the exhaust. I have read that the valves are different on this tractor but it seems like if all 3 valves are closed that there would be no where for the air to go unless the head gasket is blown or head is cracked which I guess is common but I would not expect that on all cylinders. The tractor was running when it was parked and there was no oil in the water or water in the oil. Does anyone have some thoughts on this? What I am looking for is what is different about the MD as I have done this on other engines to test for leaks. I hate to pull the head but it is looking that way. Thanks
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Today's Featured Article - Talk of the Town: Winterizing Engines - To Drain or Not to Drain? - by Russ Berry. What is this strange attraction I have to equipment and machinery? How did I get this way? I came from the suburbs and own a small horse farm in rural Loudoun County, Virginia. You can call me a "weekend farmer." The local farmers do. Does it bother me? No. I am just happy to have their friendship. At least the word "farmer" is in my title. But what is the attraction? How can I explain the sensation and exhilaration I feel when I turn the key and hear the engine come to life (most
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