I recently started having a problem with the port engine's oil pressure. It runs about 10 psi lower than the starboard engine. After running hard it drops to 0 psi at idle. I already eliminated the sender and the gauge as the culprit by installing a mechanical gauge. Are there any quick tests I can do before I have to yank the motor?

not really, sounds like A bad oil pump or bad bearings...either way it gotta come out

That's pretty much what I figured. How can I tell if the bearings or the pump are bad?

pull the oil pan and check them

Chisel open the oil filter and look between the pleats for the flakes of death.

BT

BT

"Flakes of Death" will mean bearings?

yes bearing particals but either way the pan has to come off

OK,
I pulled the oil filter and I can see bronze or brass particles in the oil. I've already started to pull the motor. Thank you GOODT and BT for helping me to isolate the problem

you are very welcome, if you need anything dont hesitate to call or email

would your low oil pressure alarm go off on you as well?