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Old 04-20-2018, 10:17 AM   #24
71cadc10
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Join Date: Apr 2004
Location: Boiling Springs, PA
Posts: 435
Re: Oil pressure dropping after rebuild

you can check the relief valve in the old pump easy, unscrew that allen plug on the bottom and the spring/valve will fall out. If the bore is scored or trash in there...would explain your issue if it was stuck
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71 C10 long bed, 2003 6.0L, 06GTO E40, T56, 12bolt 4.10 rear
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