Question about 2003 kawasaki ZX-6R

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03 zx6r overheating

Someone put regular car coolant in the bike that left a build-up in the bottom of the resivor. Ran just fine till i changed the coolant (with kawasaki brand), then it started boiling in the resivour and overflowing out the bottom of the bike (temp. 235 degrees). So I changed the thermostat seemed to be fine for couple of days. I only take 15 minute rides to and from work. now it is not boiling over or expeling fluid but still gets to 236 degrees. When the fluid was origionally flushed, (with water), no particles were present. After I changed the thermostat some particles were present in the fluid and there was some white chunks behind my thermostat i belive it is from the car coolant that was origionally in it. have not checked the water pump yet. and the fan is operating I suppose. I really just have 3 questions. 1. what is good operating temp.? 2. is it possible that my fan is not coming on at the correct temp.? 3. if it were a head gasket should I be able to tell by looking at the oil window for cloudy or milky oil?

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1. I have an 02 and just normal riding temp for me is 170-188. 2. Yes that is possible you can get a toggle switch from any auto part store and rewire the fan so you can turn it on when you want. Thats what I did and I turn mine on around 175 just to be safe. 3.Yes you would be able to see it through the oil window.

Posted on Jun 21, 2009

  • CJ Monaco Jun 21, 2009

    1. I have an 02 and just normal riding temp for me is 170-188. 2. Yes that is possible you can get a toggle switch from any auto part store and rewire the fan so you can turn it on when you want. Thats what I did and I turn mine on around 175 just to be safe. 3.Yes you would be able to see it through the oil window.



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