I'm having an issue on my bike where is makes a weird noise when the bike gets warm you dot even have to drive it it doesn't overheat and it doesn't affect the performance if anyone has an idea what it is

 

... the fan?

 

Weird how? Knocking, ticking, grinding, whizzing / whining, left or right? Could be a number of things.

 

I was thinking the fan to its Ike a chugging sound kinda I was a little low on coolant I bought some yesterday I just haven't been home to put it in

 

It's like a chugging sound kinda I was a little low on coolant so I bought some I haven't had time to put it in yet I'm gunna pull out the fan next to see if that's what it is

 

Could be the coolant boiling, although if it was you'd probably be running a little hot. Could be caused by a blown head gasket, weak coolant, plugged radiator, or a bad thermostat. It will usually push it out into the overflow, however. If you can hear it boiling in the radiator you're really low.