radiator is gurgling???

[PottersRacing22]

i have noticed last 3 times i went riding my fan was not coming on and when i shut the bike off you can hear the radiator gurgling . whats going on????

[DnB_racing]

check to make sure fan is working by putting the sensor lead to ground, fan should come on!! as far as the gurgling if its doing it while running it could be head gasket

[PottersRacing22]

it does it as soon as i shut the bike off. and the fan didnt come on . i have a 06 fan and radiator can i ues that on my 05?

[PottersRacing22]

H E L P !