Okay, so I pulled the boat out of the marina today, brought it home, and put it on the muffs. Here is some more information. The noise only starts after the motor has warmed up. It was not there when I first started it (or if it was I couldn't hear it over the TKS hissing). Once the noise started I did the following:
I felt around for exhaust leaks as fun times suggested. I didn't feel or hear anything that sounded like an exhaust leak.
I then removed the belt as Bt Doctur suggested. I did not hear the noise with the belt removed. I then turned every pulley by hand, and heard a squeak noise coming from what I believe is the water pump (it's the center pulley above the harmonic balancer pulley). It did not always make this noise. In fact, I could only get it to do it a couple times total with my hand. I put the belt back on, and the noise was very intermittent. It would come and go - sometimes loud, sometimes soft, and sometimes not at all. I've never had an overheat issue, and the temp stays around 150 on the gauge.
On a side note - I'm not sure if it's related, but my idle oil pressure sites around 60 on the gauge. Goes up to 80 when I throttle up.
What do you guys think?
Thanks!
