lakecabin36
New member
I have a 1990 Formula 36PC (not express) with twin Mercruiser 7.4 liter Bluewater Inboards. Our first summer was last year and we battled water and debris in the starboard fuel tank most of the summer and went through about 5 fuel/water separator filters. We had very little problem towards the end of the year. The boat is stored inside heated (we are in South Haven, Michigan). We got the boat in early this year, end of April, and are having more water in the starboard tank again. I put another new o-ring on the fuel cap a couple weeks ago, and when I loosened the cap this morning, I noticed a vacuum sound (weather had cooled quite a bit), which makes me wonder about the fuel vents. There are three on the side. Anyone know anything about the fuel vents?