I recently had a bearing problem in my new Gen VI 496 blower motor. There was no obvious malfunction. A buddy of mine, Supersoaker466, provided me with the following links that solved the mystery.
A $5. oil bypass change and the removal of another oil bypass is all the change that is required to fix the problem.
Read it for yourself:
http://www.offshoreonly.com/forums/s...ght=oil+bypass
http://www.offshoreonly.com/forums/s...ght=oil+bypass
http://www.offshoreonly.com/forums/s...ght=oil+bypass
http://www.sdpc2000.com/
In the last link to Scoggin Dickey, click on Contact Us, then Knowlege Base, then search Oil Bypass.
Good luck. I hope this helps some of you. Note: It does not apply to Mark IV engines
L J
Thanks Supersoaker466 for sharing this information.