My boat has an aft bilge that does not fully drain to the sump. I can reach my arm into the aft bilge and spunge it out through the holes in the fibreglass structure that the engine mounts to. But that is rather inconvenient.
It was clear that the source of the water accumulating in the aft bilge is the stuffing box. The water runs from the seal down the engine liner and through small holes in the engine liner into the aft bilge.
I simply sealed the small holes in the engine liner with silicone. Now I only have to mop out the engine liner, which is much more accessible. You may want to try the same thing if you think the source is the stuffing box.
