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Old 06-10-2019, 07:10 PM   #3
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Join Date: May 2010
Location: Bismarck ND
Posts: 898
Default Re: Help rear main leak

The stock oil pump will put out at least 40 psi. The reason you only see 2-3 psi is because there is no back pressure. The pump pumps oil to the valve chamber and it drains back to the dipper pan or runs down to the main bearings and the timing components.
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