Quote:
Originally Posted by Wade_Owens
Sure Frank, after the engine is warmed up, and I'm ready to change the oil, I have to "release" the vacuum that my system creates or the oil wont drain from the pain. The first time this happened, it scared the s&*^ out of me, I thought I had forgot to put enough or very much oil in it. After opening the filler spout, the oil drained freely as it had always done before.
Also, be very careful while playing with this, it does affect the oil pressure. If you use thin oil and low oil pressure, it messes with the bypass valve in the pump.
Wade
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Wade have you ever connected a vacuum gauge to your crankcase?
not being a hydraulic engineer or anything like it, but don't pumps need a certain amount of atmosphere pressure to pump?
brake booster check valve and a sealed crankcase, sounds interesting. Use the manifold vacuum to pump the crankcase down.