last week got about 2 inches of water in boat from a down pour the boat started missing until it wouldnt idle put drygas in it while i had it on the dog ears started to idle better then i noticed water comming from around spark plug hole pulled plugs and cranked it over and water flew out the third spark plug hole i know i had water in my tank my question is can that much water lay in there or do i have a crack and if so what is it thank u