Quote:
Originally Posted by jaoneill
...The night before I had installed a new shutoff valve and changed the engine oil and filter... Started cold this morning and pressure jumped to 3 immediately, although there is a slight valve tick...
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I would suspect the oil filter, or its installation, restricting oil flow and lowering pressure. A plugged (defective?) oil filter, or leaking o-rings, may let oil pressure drop.
The filter is a likely suspect since you had just replaced it. I don't think it's the pump, since you got good pressure. It's probably not a main bearing, either, they are quite durable and don't just go bad.
If you have been doing your own O&F, you are familiar with the procedure. Double-check everything. Replace oil filter again if in doubt.
Let us know...
Best Regards,
Jim