Re: Quick Question About Wave Runner...
That si way too much water to get in there. There has to be a seal leaking.
If it were me, I would suck it all out and let it sit....not running.....to see if it happens again. I would also perhaps get in on a trailer, take off the engine cover, and hit the entire boat with a house. Not a power washer, just a house, and have someone look inside. Look for leaks.
I inspect my engine bay after every use. I usually leave it open so it gets good and dry. It is normal to get a little bit if water. I might get a few ounces and I have no idea where it is comming from. Some of it could just be condensation.