Coolant Problem - could someone confirm?

[danikorea]

Should be an obvious answer, but I was hoping to see if anyone else had the same issue.

-Few weeks back, rode home from work (40min-ish ride) and noticed temp gauge at 4/8. Usually it's at 3/8 even in the summer. Wasn't particularly hot day either. Felt more heat coming from the engine than normal. Once parked, I heard gargling noise and it puked out some coolant.

- Took it to dealer. They topped off coolant. Told me come back if it happens again

- Next day, same thing after 30min or more ride. Took it to dealership - they worked on it, performed coolant flush and bleeding out any air and said they couldn't find any issues or leaks. Seems to work fine.

- Today, after about 40min-ish ride, I come home and notice temp at 4/8. Turn off ignition and I can feel something (coolant) boiling and/or bubbling inside the hose. I can put my finger to it and feel it boil inside.
Checked everything I could and can't find any leak.
Rad cap looks good too, but will replace anyways. Didnt puke coolant this time.

Any ideas? Is the hose I'm pointing at supposed to be boiling or gargling inside? I did not get any warning lights or anything on dash eversince this started to happen. Just want to know maybe if this is...normal? Shouldn't be I guess. Just can't tell where or how I have a sudden vaccum leak. Any help is appreciated.

Thanks

[danikorea]

+ just to add,

Bike works fine. No rough idle, loss of power or misfires. Everything in the bike seems to be fine and runs smooth as ever. No warning or check engine or high temp light came on. Rad cap replaced.

Fan works fine too

[sergensadeli]

My bike same problem. You can find problem? Please help me

[danikorea]

Originally Posted by sergensadeli

My bike same problem. You can find problem? Please help me

I had the dealership look into it and they couldn't find any leaks or issue with the cooling system. I did some research and got the radiator cap replaced and did a coolant flush. This fixed the problem somehow. Perhaps, it was the radiator cap that started to go bad.

Order a new cap, replace it and do a complete coolant flush, it may fix the problem.