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Dropping oil pressure

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JL2A

Joined: 07 Apr 2015
Posts: 113
Location: Australia

Posted: Thu Sep 06, 2018 3:33 am Post subject: Dropping oil pressure

Recently overhauled M14



Oil pressure is ok and low to moderate rpm. As soon as increase past 60% oil pressure drops. 



PRV adjusted full increase

Screens clear

Fresh oil

All obvious stuff - supply lines, oil cooler etc clear flowing oil. 



I’ve had a similar but not as rapid & obvious drop in HS6A which was traced back to oil pump. Replaced with new and problem went away. 



Not as familiar with ‘52 inverted system regarding breathing - anything we can should to see oil system is properly vented?



Anyone with a similar experience please chime in!

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