No oil pressure?
Ok, this topic is already here a million times...but, I changed the oil and filter in the jet boat. Everything was as it should be before. Now I have no oil pressure. Checked the sending unit with the ohm meter, good. Checked the electric gage with key on and tapping wire to ground, works. Tried another sending unit, still doesn't work. Checked to make sure oil was in the filter, yes. Replaced the filter, still doesn't work. Pulled the distributor and checked the drive shaft, good. Ran the pump with a drill, gage didn't work but there was resistance showing it could be pumping.
I noticed that there is no sign of oil when I pulled the sending unit? I have not yet pulled the valve covers to check for oiling to the rockers.
Everything is low hours, about 30. Ford hi volume pump, new Stewart Warner gage and matching sending unit, oil is full.
Any ideas as to why I'm not seeing oil at the sending unit?