Any one with the cool engine temps? I fixed mine.
For me it wasn't a bad thermostat or the sending unit giving false reading.
My port engine would raise in temp at idle just like the starboard engine but as soon as I started to throttle up my temp on the port engine would drop to around 120 while the other engine would still get up to normal operating temps, like 170. Well I pulled of my thermostat housing and took the little brass 90* fitting off the top. If you look down the middle inlet/outlet tube on the housing you can see a hole. That small hole leads to the inside of where the thermostat sits. If you remove the thermostat and you feel around under the lip you can feel the hole.
What I did was jam a ridged yet flexible wire down the middle inlet/outlet right in to the little hole inside and worked it until it worked its way out to the underside of where the thermostat sits.
Guess what popped out? A small piece of impeller.(in the middle of the picture)
Since we are going on a big boating trip this fri-sun, Im going to pull the starboard t-stat housing tonight. I bet I picked up another piece of impeller in the bypass again!!
