Just joined having problems with oil in a 1950 chev truck with 216 . Oil distributor valve. Opens too soon will not let oil going to top I think oil blockage is some where , if I pump oil from rocker line back it comes out of the line that supplies oil to the oil pan and not out of the line the oil pump feeds to. If I put a steel plate to cover the oil distributor valve, and plug off the line to the oil filter, then I get some oil going to the top .