Signs of a weak oil pump?
I have '97 with 153,000 miles. Lately I have noticed a low end knock when I start up, usually when cold, but also more recently when it has been sitting awhile. It is the same sound I hear after an oil change on this and other high mileage vehicles.
My theory is that the pump may not be holding a prime, and there is some slippage until started. My idiot light (no gauges) comes on for a sec after it starts and everything is fine, no knocking when running, except for a slight lifter sound.
Is it time for an oil pump replacement or kit, or is there something else going on?
Thanx for any help