engine or outdrive leak

[BigAl331]

I'm not too sure about I/Os but here goes.

To try and narrow this down I have several questions for you:

1. Does it leak when the motor is running or not?
2. Does the water have a gas or exhaust smell?
3. Does it leak when on muffs or only when in the water?

This should help to eliminate the bellows or narrow it to the bellows.