I am expieriencing strange oil pressure readings oil pressure goes up to about 25lb and then dosent move either up or down whatever the revs.Taken pump off (only 2500miles old)everything seems ok apart from the relief valve itself.The piston which the spring pushes against has a tiny cut out approx 1mm deep and 3mm wide should it be there ?The engine has been rebuilt and sounds really good has anyone come across this before
Bob
Bob
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