Hello all, I was wondering if any of you have had this issue or know what it might be.

I have a VFR800 that has been running hot even when it is not that hot outside, I ride to work at about 6:50 in the morning and at this time it has not been over hot outside, but at points tha bike has even got to boiling point.
The Fan does kick in and cool it down, but when I come home at 4:30 I get home to find tha bike boiling over and pee'ing water all over the place, and yes the fan is running at this point.
The first time i had this was last year when we were down in Lyon in France and the heat was up in the 42c's and it has not been right since.

Do any of you have any ideas or any tests I can do please??