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Bike talk with Dangus (tyre deflating overnight)

submitted by paul_neri to MechanicalManiacs 1 weekApr 17, 2025 22:49:02 ago (+10/-3)     (MechanicalManiacs)

You remember we discussed this last week and I told you that replacing the valve core and replenishing the sealant didn't cure the problem...well yesterday the tyre almost didn't get me into town and back so I got the bike out today and put some soapy water on the valve core end - no bubbles. Checked for punctures as evidenced by hissing/sealant escaping - nothing. Then checked the valve seat by putting soapy water on it and...bingo! Big bubbles.So I did what you said namely unscrewing the valve a bit and pushing it up into the tyre to separate the internal tyre-strip (we are talking tubeless) from the tyre and letting the sealant get to the valve base and forming a seal and, dude, it seems to be working. No bubbles. Going into town soon so I'll see how it goes. As you know, dangus, I'm no bike tech-head but your advice saved me some dough as I would have needed to go to the bike shop!Thanks, dude, appreciate it.

Copy: @iSnark


1 comments block

Hey Paul, Thank you for including me on this. The Presta Valve is new to me, and it's going to take a while to really get to know it's strengths, flaws, and work-arounds. I appreciate the tip on checking the valve-seat.