I had read online that crankcase pressure can prevent the return tube from flowing on turbo applications. To test this, I ran the return line into a bucket instead of the oil pan. When doing this, oil was flowing fine through the return line, but was bubbling out of the oil pan feed thru that the return line would have went in to. So I unhooked the vent line coming off of the valve cover and the bubbling out quit, but the oil is still right there at the feedthru.
I would have expected that the oil would not sit at that feedthru. What would cause this? Is there somewhere other than the valve cover vent that I should check to make sure it is unclogged? How about the oil cooler? Is there anything there that can clog up and cause an issue like this?
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Today's Featured Article - Madison's County - by Anthony West. Philip Madison has been a good friend of mine for quite some time. He has patiently suffered my incessant chit chat on the subject of tractors for longer than I care to remember, and on many occasions he has put himself out, dropped what ever it was he was doing, to come and lend a hand cranking handles, or loading a find onto a trailer. Although he himself has never actually owned or restored a tractor, he was always enthusiastic and always around helping with other peoples projects.
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