bones66
Bronze Member
I recently installed a new engine block heater. The new heater was a different brand than the old one. My old one had served me well (over 40 years) and decided to call it quits. Although I don稚 use it that often. When I installed the new heater which was a different brand I flushed and changed the antifreeze draining the block and radiator. When I plugged it in I noticed the familiar sound like a steam iron heating up. Later I went back and the thing was making a humming/squeaking sound. Kind of like shutting the water off an outside water hose. My first thought was maybe cavitation in the block however I had drove the tractor over and hour out to a barn and return 2 times. I plugged it in again and it started that humming/squeaking immediately. It seems to heat ok or as much as I can tell by touch.