my dad has a 1982 40hp merc that has a fitting in between the two spark plugs,that when the engine is running is pissing water out of it inside the housing,the engine is not running hot but i know this cant be right. i have a 115hp merc that is a 1988 that has a plug in it. my question is can we plug it? and what do we have to watch for if we do plug it. thank you for your help cause i'm not much of a motor head
<br /><br />I will move this to Merc Troubles for you.