07 yz 450 loosing coolant

3 replies to this topic
  • qwik12beat

Posted October 25, 2008 - 02:21 PM


Hey guys. I just noticed recently that my bike is using coolant. Lets say if i take it for a ride for about 20 minutes it will use about 2cups of water.***?I DONT GET IT PLEASE HELP!the bike has 39hrs on it.It has been through 5oil&filter changes, and i shimmed the valves once. I dont know what it could be.If i go for a cool down lap like cruisin in fifth for a mile or so it will still be pushing coolant out of the overflow.

  • grayracer513

Posted October 25, 2008 - 04:49 PM


Head gasket or a water pump seal.

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  • rexbond007

Posted October 25, 2008 - 05:00 PM


rad cap may be gone?

  • qwik12beat

Posted October 26, 2008 - 04:55 AM


Thanks for the suggestions. I will try the cap first.

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