so i buy a new t-stat as i could tell the original i don’t think has ever been changed since it took a few prayers to get it off. And corrosion was everywhere. anyway, i’m cranking the new one down from amazon and i hear a crack. cant really see anything so crank it up and sure enough it’s leaking through the housing. of coarse nobody is open tomorrow so I won’t be getting the boat wet. It’s always something. simple maintenance seems to always turn into a big deal in my driveway! Owell, thanks for listening to me vent.
All my wife understands is “so it’s worse now than when you tried to fix it” 
define housing
is it cracked on the shroud around the TS, or the bolt hole under it?
please say the shroud
what motor?
I got a Honda, it was leaking through the cracked plastic TS housing at one of the 2 attachment points
I sheared a bolt head getting it off and had to take it to get drilled and tapped for a slightly bigger bolt
Yea it’s through the shroud about half inch above where bottom bolt is.
2006 merc EFI 115
Wasn’t that 115 Merc. a four cylinder? Yamaha powerhead, IIRC?
i belive so. this was the last year Merc used the yamaha powerhead