My 78B normally runs high anyway, about 75% on the gauge toward hot, but
last night running it at 4500 rpm with an outside temp of about 70
fahrenheit, I noticed it was just barely under the red, so it had moved to
90, 95% or whatever.
I have replaced the thermostat switch on the engine fan, and those fans
seem to work. I don't recall if I have a summer or winter thermostat on
the engine itself, but neither should let it get that high. Coolant level
should be okay, oil should be fine.
Anything else to look at? Would the radiator need to be flushed? Or
should I just look at replacing the engine thermostat anyway?
Thanks
- Tab
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