Russ Calasant
Active Member
I seem to remember this issue occurring when the local water temperature rises but I'm not sure. My motors usually run at 160 from warm up to shut down. Recently my port motor jumped up to 170 and starboard 179 after running up the rpms. At idle and steerage speeds they both return to 160. Anyone have any ideas? Impellers were changed last season as well as the port raw water pump.