Leaking just under the gimbal bearing

[Jack Yamaha]

89 Yamaha sterndrive with new bellows still leaking just under the gimbal bearing. I'm assuming its the exhaust gasket or a cracked y pipe. Is there a trick to diagnose this while the boat is in the water ?

 

[alldodge]

Use your phone and take a movie or get a bore camera for your phone to look around