Tony D Posted April 22, 2013 Share Posted April 22, 2013 The flaking paint, like leaves in a pool collects on the strainer screen, reducing flow and therefore pressure. Since it obstructs the screen, it doesn't fall off until you shut the car off and stop the pump. It then falls to the bottom of the pan where idle pump suction does not disturb it. When you rev it, and slosh the oil around, it gets floaty again, and sucks to the screen. Causing the problem again. Clean the pan, and try it again. The Schmutz should not be an issue downstream...it would be macerated in the pump... That's my theory...I'm stickin to it! Quote Link to comment Share on other sites More sharing options...
Tony D Posted April 22, 2013 Share Posted April 22, 2013 Removing a bypass valve is not a good idea, as dirty oil is better than no oil... Or a collapsed filter element sending cellulose fibres all directly into your bearings! Quote Link to comment Share on other sites More sharing options...
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