Presta valve tubeless tyre not letting air in or out.

itsdanny
itsdanny Posts: 10
edited April 2017 in Workshop
I recently acquired a second hand road bike with tubeless tyres. The front went totally flat for some reason. But i pumped it back up fine. This was 6 weeks ago. Now i cant get any air in or out of it, though obviously it's starting to go down. What can i do?

Thanks for any help.

Comments

  • trailflow
    trailflow Posts: 1,311
    Screw the mini presta valve loose and press it.

    If tubeless sealant has gone into the stem tube and caused a blockage. You will need to unscrew the full valve from the stem with a presta valve tool (or small pliers) then unblock the stem with something thin and pointy. Then refit the valve back onto the stem.
  • sungod
    sungod Posts: 16,551
    ^^^this

    make sure the valve is at the top when you unscrew it, and keep a paper towel over the stem until the pressure is released, otherwise everything may get a bit sticky
    my bike - faster than god's and twice as shiny
  • itsdanny
    itsdanny Posts: 10
    Thanks for the info. I've checked a few videos out, it's not that scary. just need some new sealant before I get me hands dirty.
    Many thanks

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