I have a new to me 2003 366 with 280HP Cummins & an 8 KvA Kohler. I have had part of 1 summer on board so far & we are loving the space & the set up. However I am now doing pre-season maintenance like filters etc.
It's true to say I haven't paid much attention to where the raw water from the generator exits the boat until now.

I replaced the impeller & took the heat exchanger off & cleaned it up, flushed & replaced the coolant & started it up. The first thing I looked for was to see the raw water discharge.

There was none I could see. None coming out of the exhaust outlet at the stern of the boat.
Expecting a blockage between the siphon break & the muffler, I've spent some time cleaning out the hoses etc with Barnacle Buster type stuff. If I now blow through the hose at the siphon break I can hear bubbles in the muffler.

But still no water out of the exhaust outlet.

However I do see the water coming out underneath the boat part-way down the hull. The generator runs OK but surely it's not meant to be in effect a dry exhaust going the length of the boat?

Because the generator is under the floor & up against a bulkhead I can't see the elbow mixer for the exhaust & the raw water, without cutting some extra hatches in floor.

Can anyone help with information for this model 366 exactly where the raw water is supposed to come out from the generator?