New radiators issue.
I just got around to running my radiator kit, and it looked like there was air in the system after running it for a bit. So I topped off the radiator through the cap, and put a tiny bit in the reservoir.
After running it a little bit, and giving it some hard pulls to get the rest of the air out, I let it get up to temp. Around 210-220 it began to spit coolant back into the reservoir. So much came out that it overflowed and filled another bottle about the same size as the reservoir. (I was expecting this and had the second bottle setup already). After shutting the bike off and letting it cool down, it sucked all the coolant back in, enough to drain the reservoir and suck air back in. Obviously there was a massive amount of air in the system after the install, but I am fairly sure I got all of it out of there.
I'm not sure if the radiator cap is letting the pressure out too easily or what. The system had no issues before the install, so I doubt the cap suddenly went bad. Has anyone actually watched to see when their radiator cap starts to bleed fluid pressure?