"Winterizing my 88' Mercruiser I/O today, I opened up the drain plugs on the block and exhaust manifolds, the port side manifold didnít have any water in it. While the starboard side had water drain. I did stick a wire up the drain hole to make sure it wasnít plugged and it wasnít. I also checked all 8 plugs and they all look similar.
The boat has been on its trailer and hasn't been run in about 2 months, could the water have drained out of that side?"