Water in engine compartment?

[F.M.]

Ok....so, this would seem obvious, but the water was actually coming in from the clean out ports. There is a drain hole but that doesn't handle all the overflow so the water just fills up the space and then gies between the screwed on, not sealed, cover.
Should/can I go ahead and seal it?

You can and should.

 

[Roof]

Yes sir

 

[tdonoughue]

To seal it, I used a line of thin weatherstripping underneath (after cleaning off all of the silicone from the factory). Makes removal/reinstallation much simpler. I'm sure I have some small spot that still lets in water at the joints, but nothing significant...

 

[Roof]

Mine was never factory sealed...figures

 

[haknslash]

None of them are sealed. Water gets in that compartment from the drain that goes under the swim deck. As you come off plane water rushes into the hose and then up into the drain in the wet storage compartment. They do not have a check valve on that hose. Adding a check valve would keep the water from rushing into the wet storage.