My take. Don't run it anymore until you can make pressure with the priming shaft.
1. Reassemble that pump. Checking to insure the relief valve slides smoothly.
2. Replace oil filter and add a quart of oil.
3. Try to prime it with the priming shaft.
4. If good pressure, rotate engine slowly while continuing to prime.
5. If still no pressure, add 2 more quarts of oil and retry. You're testing the oil pump pick-up crack theory.
6. If it builds good pressure, YOU"VE FOUND IT! Pull pan. See what hit the pick up and repair. Check a few rod and main bearings while you're in there.
7. If still no pressure, pull intake manifold and valley pan and look for displaced lifter.
Last edited by Ramman; 02/25/22 09:49 AM.
