Strange projection in my hood (Scarab 165/ 63 Hours)...

[Divouneh]

I have some deposits on my hood, it's coming each time I am using the boat.
This is what you could have after 2 hours on the water.
It look like water but the black spots ? Not particules.
It's not oil, coolant: my cooling fluid level is not moving.
5 minutes after leaving the dock, always less than 3000 rpm due to no wake zone, you can see what I have in my tape.
Did someone had this ?
As my boat is new (delivered in may 24), I went to the dealership workshop, they said run the boat... However I need to find why it's happen.
( I was suspecting the exhaust cooling water pump, but it's not ).
My motor is a basic 170hp without any turbo...

 

[Luc Lafreniere]

I don't have an answer. But I recommend you run the engine with the hood open and watch visually next time you're on the water. Hopefully you'll see where it's coming from. I've never seen something like this.