Thread: Lubrication problem

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Great schematic Denny!!!! My guess is the lines from the cam bearing to the rocker shafts are clogged..... What's yours?

You guys have beeen a great help so far. Pulling the pan seems inevitable, but I think maybe I should try to get a REAL oil pressure reading with a REAL gauge first. This way I'll have some sort of base to work from. Do you think all the idleing caused this problem? I know 100,000 seems like a lot of miles but another friend had 250000 on his fe 390 and it was still running strong. Like I said before the oil was changed religiously and inside the valve covers is spic and span.
The drawing is exactly what I was looking for. I now can see where the oil comes from. I could pull the one bolt on each rocker shaft and blow compressed air down through. I know I still need to pull the pan no matter what. When I pull the pan and say the screen is clean, then what should I check next? Check pump clearances? Use Plasticgauge on the bearings? Just my luck, it hasn't rained in 6 months here in California, today it has to rain.
I really appreciate all the input, as I was stalled out on this problem, being a chevy guy all my life not familiar with this engine. This forum rocks.

I'd just go ahead and replace the pump, they are cheap enough. Change the oil, maybe throw in a quart of Marvel Mystery Oil and see what happens. You either have something that can be fixed easily or a problem. By doing the new pump routine you will start eliminating the easy stuff first.

Don