I just took my 89 baja force with a merc 7.4 L out of winter storage 3 weeks ago and noticed I was running HOT 180 to be exact. I normally run 160. I went right at the impella and replaced it though it looked fine. Then went toward the tstat took it out and ran the engine without one. She ran 110-120 maxing out at 140. I reinstalled a new thermostat started her up and the temp gauge raced to 200. Any suggestions on whats going on. Right now I removed the thermostat to make it back to the dock. Any suggestions would be appreciated