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1985 K100RS nagging coolant leak. Fri Mar 15, 2024 5:41 pm
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I may have posted about his some time ago, but not sure. Anyways, here it goes. I've had this goofy little coolant leak for the past couple of years and I suspected where it was coming from. Well, now I have proof after running up my bike today to get the bubbles out of the system as I had the rad out for cleaning. The pictures are self explanatory, I think.
The leak is coming from the underside of the hose that runs behind the cooling fan and clamps onto the aluminum housing where the temp sensor is. The hoses you see are the originals which I reinstalled to see if it was a problem with the Samcos I had. Nope. It still leaks. As you can see I install the vertical hose first and then butt the horizontal one up to it. I can't remember what it was like originally. This is stupid stuff I know. Should I be installing the horizontal hose first and then the vertical one or does it even matter? How are you guys positioning these 2 hoses?
I'm glad that I was actually able to catch this. I have indicated the path the coolant flows with a blue line. I'm glad this leaked straight away as it hadn't before. Initially I thought I had a head gasket problem. Now I know that I don't.
Thanks,
Tom
![1985 K100RS nagging coolant leak. 212](https://i.servimg.com/u/f53/20/32/12/35/212.jpg)
![1985 K100RS nagging coolant leak. 1_modi11](https://i.servimg.com/u/f53/20/32/12/35/1_modi11.jpg)
The leak is coming from the underside of the hose that runs behind the cooling fan and clamps onto the aluminum housing where the temp sensor is. The hoses you see are the originals which I reinstalled to see if it was a problem with the Samcos I had. Nope. It still leaks. As you can see I install the vertical hose first and then butt the horizontal one up to it. I can't remember what it was like originally. This is stupid stuff I know. Should I be installing the horizontal hose first and then the vertical one or does it even matter? How are you guys positioning these 2 hoses?
I'm glad that I was actually able to catch this. I have indicated the path the coolant flows with a blue line. I'm glad this leaked straight away as it hadn't before. Initially I thought I had a head gasket problem. Now I know that I don't.
Thanks,
Tom
![1985 K100RS nagging coolant leak. 212](https://i.servimg.com/u/f53/20/32/12/35/212.jpg)
![1985 K100RS nagging coolant leak. 1_modi11](https://i.servimg.com/u/f53/20/32/12/35/1_modi11.jpg)
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1985 K100RS