I had the same issue. Ended up being my manifold needed replacing. I first tried the oil cooler but that wasn’t it. Check your oil - it may be getting salt water in and becoming a little milky.
I find I have to replace the carburetor every 3 years or so because of the ethanol. Other than that she runs like a beauty! Appreciate the tips - they can certainly come in handy!
I have a 2004 340 DA and decided to go with https://www.amazon.com/gp/product/B008AGQMQC - for $15 I was able to add Bluetooth! With that said, when I purchased my boat last year, the previous owner had added an iPod adapter (which is really just a ...