While dipping on the Kenai this year I noticed on my smart craft gauge the temp reading 149 degrees. While I occasionally scroll through the different modes on the SC gauge, I usually keep it on the temp. In all my running last year the only time my temp. got much over 100 was when I was trolling while dipnetting, and even then it didn't get much above 100, and would come right down to the upper 70's once I got up and running on step. So far this year I've only used the boat for dipping and during the 4 days I was down there, the temp would go up to 149 and stay. I removed the heater thermostat and bypassed it, to see if that could be the problem. It wasn't. When I got home and was able to flush the engine, with water from the hose, the temp on the SC gauge went right back up to 149 degrees and stayed. Both the water exhaust ports on the transom seemed to function properly, as they both had a continuous, strong stream of water out of them, and when I would put my hand underneath the streams, neither one would be even luke warm. They were a tad bit warmer than the water comming directly out of my well, but definitely no where near 149 degrees.
So why is my smart craft gauge now always reading 149 degrees when in the past it had always read much lower? Could my SC gauge be malfunctioning? To an idiot that's not much of a mechanic (that would be me), it doesn't seem like my engine is getting close to the overheat point. For you folks running 200 Sportjets, do you know what your running temps are? Any insight would be greatly appreciated.