Well, I found out at least part of what is wrong with it. I took off the valve cover and found two bent pushrods on cylinder 4. The exhaust pushrod was sitting loose in the head and was no longer under the rocker arm. It has a slight bend to it that is just barely detectable by rolling it on a flat piece of steel. The intake pushrod is bent into an S shape and was stuck in the rocker arm. The intake valve moves freely but the exhaust valve moves very hard and rough. I do not know what could have caused it. The engine oil has no water in it and the intake and exhaust ports looked fine when I changed the manifold gaskets. The valve stems also looked straight and relatively clean with no hint of rust. Has anyone ever gotten stuck valves loose without pulling the head?
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Today's Featured Article - Women and Tractors - Tractor Engine Repair - by Teri Burkholder. One of the great things about working on a tractor engine with your other half is that you know what he is thinking of at all times and can anticipate his every move and his next thought of what he will do. With Ben, anyway, I can tell! He'll be busy working and I’m handing him tools and he says, "give me that..." and I’ve already got it in his hand or "hand me that....."and I’ve got the portable light right where he needed it placed to see. "Run in the house and get me a...."as I open th
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