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midgetracer · 06-10-2019, 07:10 PM

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.

06-10-2019, 07:10 PM	#3
midgetracer Senior Member Join Date: May 2010 Location: Bismarck ND Posts: 1,189	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.