I have a 2002 Sprint ST. I added coolant and then shortly afterwards noticed my reservoir was leaking. It did this for about a week before I discovered the plastic elbow was cracked. I replaced the elbow and made sure the coolant overflow reservoir was at the top fill line. Their hasn't been anymore fluid leaking, but today after a slow drive the temperature went higher than normal. The fan kicked in but it did not cool the engine down. Thankfully I arrived to my house and turned the bike off, but not before noticing the needle was well above normal, but not at the redline. I checked the coolant overflow tank and the level hasn't changed and is still at the full mark. Is it possible that the engine is not taking coolant from the overflow tank? I haven't checked the radiator level as I don't want to risk getting air in the system. Prior to adding coolant to the radiator, the temp needle never went above 1/2 before the fan kicked in and cooled the engine down, now I haven't seen the fan cool the engine down when it kicks in. The temperature here today has been 60 Fahrenheit so it was not hot. Prior to the fan kicking in, the engine light came on - I dont have confidence in the light as it will do this when i let the bike sit for a couple of weeks. Any advice would be greatly appreciated.