Join Date: Jul 2017
Location: Sometimes Westchester, sometimes Plattsburgh, NY
Sudden overheat, overflow tank burst
So today, an 85 degree day, I took my Vulcan out for a ride which was about 40 miles total. Everything was fine, until I stopped for about a minute in a shaded area. Suddenly, the temperature rose (but did not touch the red), & it started shooting coolant out of the overflow hose, and suddenly, the overflow bottle cracked at the top, letting more coolant and steam out. I managed to ride the bike home without it reaching the red zone (though a little hotter than usual). What could have caused this to happen?
I did not check to see if the fans had turned on. However, I did not hear them, so I assume they did not. Also, I had replaced the coolant with Prestone 50/50. When I had done this, I left the bleeder valve open, and closed it when the radiator was full. Should I let it run with the bleeder open to let the rest of the air out?
So while I await my new overflow bottle, what could have caused this to happen?
I have also just checked out the electrical connection at the bottom corner of the radiator. It seemed loose and as if no contact was made. Is this what would activate the fans?
Last edited by SergheiS; 09-24-2017 at 12:48 PM.