I'd stop by today if I wasn't traveling. Glad to see your on Barnaget bay though, I sail down by Forked River and Lacey township all the time. I'm in Brick so it takes me an hour and half to get there, but the sailing is awesome. Things to check out today would be your thermostat and manifold. Check your impeller also, but I'm sure it's fine. If water comes out your exhaust when your engine starts then there is nothing wrong with it, plus its to easy to fix and Hunter 27's always like to be difficult. On your thermostat see if you can push it open. If you hold the middle of it and push down the button at the bottom of it, the top part should open. It should be very easy to do this, if its not or its impossible, replace the thermostat. If the thermostat is fine, or the problem persists, take a part your manifold.
Fixing the manifold clogs is pretty easy; all I did was run a long drill bit through the holes to get all the crap out of them. The engine ran perfectly after that. Make sure the drill bit is the same diameter as the holes, or close to the diameter so you don't make them bigger and they extend beyond the gasket seal. To find the holes you need to unbolt the manifold completely from the engine, 4 bolts at the back of it will do this. Upon its removal look at the side of the manifold that faced the engine. It should be flat and have two holes at opposite corners; they will be easily visible from the engine side, and nearly impossible to see from the thermostat side (because they are in the corners out of view). Just run a drill through them to clear them out. The holes are completely straight and do not turn inside the manifold; so do not be afraid if you encounter resistance on the drill, its just the clog. Once your drilling is complete run some water through the thermostat side of the manifold; it should not hold water and drain almost immediately. If the water drains and everything looks good then the clog is gone and your manifold is fixed. However, before you reconnect everything, run water through your raw water intake to see if any water comes out of those same holes on the engine. Water enters your engine, circulates through it and then comes out of those holes, through the manifold and out the thermostat and exhaust. If water does not come out of those holes on the engine, you have additional cogs inside the engine and will need to take it apart. Hopefully you not have a problem like this. To ensure water has the best chance of getting through the engine clamp your bypass hose closed. The bypass hose forks off the main intake hose before it goes into the engine and connects to the bottom of the thermostat housing. With that hose clamped shut, the water will only have the engine to travel through.
^I pasted this from the thread I started about this problem. Someone else has the exact same problem as you. Seems more common then it should be.
