First start of the season last weekend and had water streaming into bilge behind front right motor mount. Figured it's the "core" plug or what some call "freeze" plug got pushed out. I drained blocks before winter but there must have been some residual left. After replacing the core plug I want to do a pressure test to see if I have a crack somewhere. Praying I don't but I want to be sure. I'll check oil for water but pressure test will tell for sure. How do I do the pressure test? Best way to seal off hoses etc? Thanks for any input.
