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I have an '84 E-150 witha 351w, it runs great but it has started blowing oil back through the dip stick tube and the oil fill tube. I took most peoples advise, one side it was too much back presure caused by clogged cats, so I did away with the cats and installed dual exhaust. Another person said my oil return lines in the heads were clogged. so I pulled both valve covers and run a brush through the oil return holes. My pvc valve mounted in the pass side valve cover is working great. I also pulled all 8 plugs to see if maybe I had a broke ring on a piston, all 8 were in great condition, dry with a light ting of brown on the insulators. I have become flustered over this! Does anyone have any ideas with this problem??? It really starts blowing oil out real bad around 45-50 mph.
Last edited by Renegaderoger; Mar 19, 2006 at 04:06 PM.
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