Coolant System Question

4 replies to this topic
  • kskyles

Posted September 11, 2006 - 11:47 AM


Hi all-

I have an 05 WR450 with a strange cooling system mystery. I have to refill my overflow bottle after every ride. I filled my radiators to the specifications in the manual, but I seem to be losing coolant. I haven't noticed any overflow from the radiators or the overflow bottle while riding.

I willl be checking my oil tonight. I am going to put it in a clean pan and let it sit for a couple of hours to see if any of the water seperates from the oil. If i find anything in the oil, I'm sure it's the impeller seal on the engine side. I know the other one is okay because there is no coolant coming from the weep hole. I replaced my impeller and seals in july. I'm thinking I may have put the seal in backwards.

Other than the impellar seal, what else should I check while I'm at it? Where else do you guys see coolant loss?


Posted September 11, 2006 - 06:50 PM


Is the bike getting hot? (Is it possible that you are boiling over?)

It's possible to pinch the overflow tube while installing the seat or perhaps there is a hole in the over flow tube and your not seeing the coolant leak out?

Good luck, over heating bad :thumbsup:

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  • kskyles

Posted September 11, 2006 - 07:46 PM


i'm not overheating.

i haven't noticed any boiling over, but i'll check all the hoses for pinching or restriction.

thanks for the reply.

any other ideas out there??

  • RichBaker

Posted September 11, 2006 - 08:51 PM


If it was getting into the water, you'd have a mayonaisse-looking mess on the dipstick and elsewhere...

  • kskyles

Posted September 14, 2006 - 05:20 AM


as it turns out, i put both the seals in backwards. :thumbsup:

yes....i'm an amateur.

feel free to insert adjective here : HAHAHA, you're a _______'in fool!

sometimes you just have to laugh at yourself. that mistake cost me about $70 and a couple of hours. :applause:


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