Rich-V174SS, just wondering about your knowledge on OBs. Ordered new thermostats because it's running ice cold on the Muffs. (After 5 min one side was lukewarm.) They were stuck open. Read this on a couple sites: "If you perform your own engine servicing, be aware that an accurate temperature reading cannot be obtained while running the outboard on a flushing device. It has to be in the water for the pump, relief valves, and thermostats to operate as they were designed." It used to run warm in the lake last time I checked a few yrs ago. Running completely cold on the cylinder and head.(On the muffs). They should be closed, right? One open and the other 1/2. 1987 140 Johnson with 850 hrs. New impeller last yr. Rich