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Offline khvbktm

Using coolant! Advice needed
« on: November 07, 2019, 07:47:41 am »
Good morning gentlemen and gentlewomen or whatever you are identifying as today

I please require assistance with my 2004 950 adventure S. The bike has recently started using coolant. To put it into perspective the bike will drop from the max line in the reserve tank to below the minimum line after a 100km trip when the bike has cooled down- so more than is acceptable or normal.
Since I have little to no mechanical skill or knowledge the bike has been into the mechanic and he has observed or ruled the following out:
There is no leaking of fluid anyware that we can find, he has pressure tested the radiator, replaced the cap and the engine oil is not milky.
Any other diagnostics or suggestions would be greatly appreciated.
Cheers


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Re: Using coolant! Advice needed
« Reply #1 on: November 07, 2019, 08:44:48 am »
I would guess the water pump shaft seal is gone, its a common problem. Remove the oil filter and see if it is wavy, that tells you that coolant got into the oil. The water could boil out.
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Offline Kaspaas

Re: Using coolant! Advice needed
« Reply #2 on: November 07, 2019, 09:46:38 am »
I Had exactly the same symptoms, coolant loss, inspected oil, could not see water in oil, replaced cap, pressure test.
Tried all the easy fixes as I did not want to do the water pump job.
Did not believe it could be the pump.

In the end, replaced the water pump, problem fixed, no more leaks.

And again while open I sommer did the valve clearances again.... I said previously never again. But built the confidence and attempted as the bike was open anyway.
Also help to have a KTM 990 specialist on speed dial for do's and dont's....

Save your time and do it.

Good luck
 
 

Offline Kaboef

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Re: Using coolant! Advice needed
« Reply #3 on: November 07, 2019, 10:17:39 am »
I would guess the water pump shaft seal is gone, its a common problem. Remove the oil filter and see if it is wavy, that tells you that coolant got into the oil. The water could boil out.

+1
What he said.

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Offline Hanno @ Mad Macs

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Re: Using coolant! Advice needed
« Reply #4 on: November 07, 2019, 01:08:36 pm »
+2
What they said

AFAIK this is a known issue . Bear in mind that water causes the oil filter to swell , cutting oil supply off . Do not ride the bike untill you have attended to this. In the long run , riding it with a blocked / clogged / swollen oil filter is going to cost you a motor rebuild.
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Offline Grumpleton

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Re: Using coolant! Advice needed
« Reply #5 on: November 07, 2019, 01:23:15 pm »
+2
What they said

AFAIK this is a known issue . Bear in mind that water causes the oil filter to swell , cutting oil supply off . Do not ride the bike untill you have attended to this. In the long run , riding it with a blocked / clogged / swollen oil filter is going to cost you a motor rebuild.

If you do it yourself itís easy and cheap water pup spares R700 to
R1000 , rebuild motor because you ran it with low oil pressure R25k +
Been there got the badge and water pump is a easy job did my one on a Saturday    afternoon
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Offline khvbktm

Re: Using coolant! Advice needed
« Reply #6 on: November 08, 2019, 08:23:01 pm »
Thank you everybody for the speedy replies. Does one just replace the seal or should you look at replacing the whole mechanism or is that a decision made once in there? Another question--it has been suggested to me that it could possibly be my head gaskets that needs replacing and hence the coolant loss? Any merit in this?

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Offline Grumpleton

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Re: Using coolant! Advice needed
« Reply #7 on: November 09, 2019, 01:26:11 pm »
When you do the pump
You get a kit from Ktm itís a shaft , seal and new circlips ,you do the seal and the shaft and if you  want new bearings as well these are available from a bearing supplier  , the chances that your head gasket is gone is slim ,more Than likely the water pump ,
« Last Edit: November 09, 2019, 01:33:40 pm by Grumpleton »
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Re: Using coolant! Advice needed
« Reply #8 on: November 09, 2019, 01:56:35 pm »
If it was a gasket you would see water in the oil and steam from the exhausts
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Re: Using coolant! Advice needed
« Reply #9 on: November 09, 2019, 07:45:32 pm »
If it was a gasket you would see water in the oil and steam from the exhausts

My engine is apart because of exactly that.
I wonder where that road goes? And that, has usually made all the difference. Appologies to Mr Frost

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Re: Using coolant! Advice needed
« Reply #10 on: November 09, 2019, 10:33:39 pm »
If it was a gasket you would see water in the oil and steam from the exhausts

My engine is apart because of exactly that.

Ouch! Sorry to hear. Time to source a 1290 engine? :thumleft:
 

Offline Grumpleton

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Re: Using coolant! Advice needed
« Reply #11 on: November 10, 2019, 04:44:11 pm »
If it was a gasket you would see water in the oil and steam from the exhausts

My engine is apart because of exactly that.

Ouch! Sorry to hear. Time to source a 1290 engine? :thumleft:

I know of a 1190 motor in Natal from a mates bike that had a coming together with a car at speed.
« Last Edit: November 10, 2019, 04:45:16 pm by Grumpleton »
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Re: Using coolant! Advice needed
« Reply #12 on: November 10, 2019, 07:47:49 pm »
 

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Re: Using coolant! Advice needed
« Reply #13 on: November 10, 2019, 10:01:38 pm »
I have a perfectly good spare 990 and a 950 engine.

The one that just started to leak, maybe I could have just tightened the cylinder head bolts and it would have been fine, but as I have a spare engine, this one is now out and apart.

Also, to fit a 1090 engine is waaaay above my DIY skills. From following other guys, it's not a simple plug a play.
I wonder where that road goes? And that, has usually made all the difference. Appologies to Mr Frost

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Offline JesseH

Re: Using coolant! Advice needed
« Reply #14 on: November 12, 2019, 09:42:09 pm »
.
« Last Edit: November 12, 2019, 10:24:59 pm by JesseH »
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