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Coolant Leak

gabbydad said:
Here's my saga.
Leak developed jsut after fist service. Clearly the bottom hose clamp. I replaced with a worm type all good...or so I thought. Rode about 10 miles to a buddy's house and got more fluid in that same slot as everyone else. For kicks, I checked the water pump bolts that I could access and 2 of them gave me a 1/4 turn or so. I rode for 2 weeks about 500 miles with everything dry.

Then the leak came back. New clamp fine. Other clamps holding. Thinking water pump gasket again; I cleaned the fluid up and I brought her to the dealer. It's a 50 mile ride and no further leak! Left the bike with them and got the call Saturday that the tech ran the bike several times and could not find a leak. It's staying dry again!

I'm picking her up tomorrow and will continue to monitor closely.
Click to expand...

Try the radiator cap.

Has Anyone tried these?
Not sure about the quality.
Says 1.1 bar is this value ok?

IMG_3299.webpIMG_3300.webp
 
Vagrant said:
I believe he means there is too much pressure on the system.
Click to expand...
Exactly thanks.

I believe the area visible as red gum material in the pictures get stuck or sticky or something and it does not release pressure to the reservoir tank, generating pressure on all hoses. Also, rotating the cap before every ride might be helpful. But beware coolant will fall if you open it since the reservoir is higher.

In any case it's a marvelous bike, just minor bugs that will be sorted out.

Now considering upgrading monoshock, with high and low damping, but mountings dimensions holes and bushings seems to be specific of V100, so researching options.
 
My update.
Dealer determined the leak stems from the water pump housing. New gaskets will be ordered and potentially new pump housing as well. In addition, a small oil leak deveopled and I was told it was due to a couple of bolts needing to be retorked.
Having bought the bike in early September, it's a bit of a bummer to lose it for so many weeks.
 
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