As posted in the "boating" forum, I've been fighting an overheat condition coming from the thermostat housing. General consensus is that it's a water flow issue. Today I took off the impeller housing and found most vanes to be oriented in the correct direction, but there were three that were oriented the opposite way.
This is my fault, as I assumed they would self-align after rotating at start-up. Does anyone think it's reasonable that the three mis-oriented vanes stay in the opposite direction during running? Doesn't really seem feasible to me, but I'm hoping that is the case.
you can see a picture posted here...
https://forums.iboats.com/forum/engine- ... e-5-0-gl-b