Coolant temp "HI"
Last december I did a full maintenance on the bike (2013 FJR, bought used in summer 2018 with just under 30k miles) in my garage using the Haynes manual. Oil change will full synthetic motorcycle oil, not car. I believe it was Shell Rotella. Also, rear final drive with Mobil 1. I did the coolant flush with blow job, including two distilled H2O flushes. Let it get up to temp, then back to room temp, just like the Haynes manual told me. The original coolant was red, BTW. I replaced using Peak Long life 50/50 coolant because it was "everything" free: no borates, phosphates, silicates, etc. Everything seemed fine in December, I burped the system, the fans came on at 220 or 221, and cooled down the bike's temp gauge at idle. Never over heated, or went to "HI". I thought, "I'm a genius!"
First ride of the spring today here in New England, high 50's low to mid 60's, everything seemed great. Bike warmed up, I rode for about 20 minutes to run a errand. Temp gauge seemed fine, anywhere from high 140's to low 160's. I got into an area of stop and go, and I guess it was fine, never paid much attention. Completed my errand at a store for about 10 minutes. Got back into traffic and the temp gauge jumped into the 200's quick. Fans on, temps still climbing, then to "HI". I turn the bike off, for a minute in traffic, then got moving again, temps get back down fairly quickly. Onto the interstate, and temps back to normal quickly. Took a rode thru back roads, noticed coming to stops, and slow downs, the temp gauge jumps up quite "reactively". Cruising normal in the 150's, then would jump to 170 or 180 something when stopped for a moment.
Got home and tested in may garage. Let it idle and the bike slowly climbed in temp, then jumped into the 200's then 220's then "HI". The fans working just fine, temp not coming down, though, after a bit, so I shut off, fans still whirring, then the bike returns to the 220's.
Never over flowed at all at anytime. Coolant level in reservoir seemed to stick just a hair below the line.
1. Did I damage my bike? Valve noise seems a tick louder, I dunno, maybe its been a long winter.
2. Do I need to rid an air bubble that was actually there before or was created today/over the winter storage?
3. Thermostat all of a sudden crap?
4. Water pump crapped? Lord I hope not.
Last edited by smadams1065; 03-30-2019 at 05:51 PM.