New tubeless tire won't hold air

[bigbill]

Originally Posted by C40_guy

After adding the sealant, I gave each wheel a pretty vigorous couple of spins. Noted that it might take more than that...

Nicely, these tires seat really nicely and are probably easy to remove...



No tape needed on these wheels.



Hmmm. Rear wheel holding air fine with no tape.



I suspect the valve core on the front wheel...it's just slightly bent. I'm going to swap out valve cores. If that doesn't solve the problem, I'll do the bubble test.



If *that* doesn't show anything useful, I'll add tape.

The only thing I'll add about setting up tubeless, I use soapy water to seat the tire. I let it sit for a while inflated and the bead will typically bubble. I deflate, remove the core, and add sealant. After I reinflate the tire, I spin it, bounce it like a basketball, and hold it sideways while shaking it. I'll put more soapy water on the bead and watch for bubbles. Then I ride it. I had a WTB Riddler that leaked through the sidewall once, that was tough to diagnose until enough sealant oozed out to notice.