2004 Mercury 50 HP 2 stroke oil site glass fell out.
I just rebuilt carbs, adjusted timeing, etc etc etc . boat running better than ever than suddenly the boat sounded like a Harley Davidson. loud as hell. like an exhaust issue. We stopped the boat and I noticed the site glass in the front to check my oil levels was gone. Water was getting into the engine and geeeez was it loud.
do you guys think a hole in the cowing could have created a lot exhaust sound?