I just bought a 1994 Chris Craft 25' Cruiser with a 5.8 OMC with an Omc King Cobra drive, before I took it out I changed the oil, plugs, drive oil, and impeller.
I took it out 2 or 3 times and all was good except WOT RPM's were a little high
because of a corroded prop. I got a new prop 15x17 and it runs even better but RPM's are still high. The problem is that I started to notice a a sound at low RPM's only when it's put into gear, the sound is like a bearing going out but it still runs great, so I put the old prop back on to rule out a problem there. I have changed the drive oil again and it was perfectly clean and yes I am filling from the drain hole very slow. From looking at the service manuals I have I believe the sound would be in the lower unit.
Any help would be great. Thanks
I took it out 2 or 3 times and all was good except WOT RPM's were a little high
because of a corroded prop. I got a new prop 15x17 and it runs even better but RPM's are still high. The problem is that I started to notice a a sound at low RPM's only when it's put into gear, the sound is like a bearing going out but it still runs great, so I put the old prop back on to rule out a problem there. I have changed the drive oil again and it was perfectly clean and yes I am filling from the drain hole very slow. From looking at the service manuals I have I believe the sound would be in the lower unit.
Any help would be great. Thanks