Coolant...where art thou? - Sportbike Forum: Sportbike Motorcycle Forums
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post #1 of 11 (permalink) Old 04-15-2008, 10:18 AM Thread Starter
 
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Post Coolant...where art thou?

Rain broke so I decided to go get a "quick fix" and collect alittle data for when I call Race Tech. About 45min. out and I noticed I was running alittle warmer than normal. Got back to the house and looked for external leaks...none found. I let bike idle be sure my fan is operating...ok there. Popped side panel off, and yes alittle low on coolant. Gonna change oil tomorrow, since it's gonna rain AGAIN! If I find any coolant in the oil... is a head gasket the most likely culprit? Oh, and the bike isn't smoking.
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post #2 of 11 (permalink) Old 04-15-2008, 10:57 AM
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From a car standpoint the answer would be yes, and I can't imagine why it would be any different here. Was the exhaust white or did it smell sweet?

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post #3 of 11 (permalink) Old 04-15-2008, 08:15 PM Thread Starter
 
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No! The exhaust is normal. Smell and smoke (what little there is) I was thinking more along the lines of the gasket possibly leaking between an oil and coolant passage, Never had this head off, but most car heads have an oil and coolant passage adjacent too each other. I was thinking a possible leak between those versus the coolant into the cylinder.
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post #4 of 11 (permalink) Old 04-16-2008, 04:26 AM
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Yes, that's the main alternate so you'd expect to see that, as you mentioned, in the oil then.

There is another possibility that I've been experiencing on my overly worn car which is exhaust blowing into the coolant system, which heats it up greatly and causes the some evaporation. However, you'd be hearing that enter your reserve bottle and the sound of boiling would be obvious shortly after a ride.

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post #5 of 11 (permalink) Old 04-17-2008, 11:13 AM Thread Starter
 
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Not being overly familiar with the engine from the inside out... is there a possibility the water pump or a seal is leaking internally? Or like a car would you see it externally?
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post #6 of 11 (permalink) Old 04-23-2008, 07:54 AM Thread Starter
 
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Well, the water pump can, and with bad seals mine was! rebuilt water pump and the leak is fixed. Now to get all that "milky *&@#!" out of there!
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post #7 of 11 (permalink) Old 04-23-2008, 11:13 AM
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I was wondering how you'd see that other than the oil, which is, I presume, where you discovered it.

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post #8 of 11 (permalink) Old 04-24-2008, 06:47 AM Thread Starter
 
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I only noticed due to running a little on the hot side and not dropping temp as fast when the fan came on. Also a lose of coolant in the reservoir. With alittle research, yes it can leak into the oil. Yam put failsafe in place on the pump and housing but wear ,neglect and more neglect canceled those out. My mechanical seal was damaged and in two pieces, the oil seal looked like it was bent when installed (can be installed with fingers, mine looked as if it got in fight with a screwdriver......and lost) along time ago, and the o-ring seal on the outside had a nick in it. Now, there is a weep hole on the housing but I'm not sure where it would leak to because of it's location. Oh, and mine was siliconed over! Can someone tell me the logic behind an o-ring seal and silicone? Some people should be banned from aisle of the parts house.
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post #9 of 11 (permalink) Old 04-25-2008, 03:35 PM
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Quote:
Originally Posted by Dilligas View Post
Can someone tell me the logic behind an o-ring seal and silicone? Some people should be banned from aisle of the parts house.
Somebody apparently didn't want coolant to leak out
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post #10 of 11 (permalink) Old 04-25-2008, 05:02 PM
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they screwed the seal up and then rtv' d it
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