The boat is on the hard
from this past winter. Yesterday I rigged it so water
flowed through the water
intake seacock (via garden hose), started the engine
and it ran fine. I let it run for 1/2 hour (+/-) to watch the temperature. It never overheated and ran fine, water came out the exhaust
at a good flow and everything seemed fine. I shut it down and closed up the engine
box. However, ever since yesterday, water has been coming back out through the seacock. Not gushing water, but the bottom paint
is constantly wet. Can there be back flow out of the engine?