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Thread: Presta valve

  1. #1
    Join Date
    Nov 2009
    Location
    Indianapolis, Indiana
    Posts
    10,952

    Presta valve

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    Believe it or not, I now have 2,000 miles on my beloved Gunnar My tires are Continental Travel Contacts. I LOVE these tires, I tell you, after 2k miles they still have a lot of miles in them and don't look much different than new. My question, however, is about one of the tubes, not the tire.

    I check tire pressure before every ride, always. As I've never had a flat, my tubes are the same as when I brought the bike home 14 months ago. A few weeks back, when unscrewing the Presta valve to check the air on my rear tires, the Presta "pin" came all the way out. I screwed it back in and there doesn't seem to be a problem but that valve hasn't seemed to be as tight as on my front tire since then. Even the actual valve cover doesn't tighten properly - but that isn't a concern.

    Is a loose pin on a Presta valve a problem? I don't want to throw on a new tube if it isn't needed, but I don't know if this is an issue or not.
    Last edited by Catrin; 07-01-2012 at 04:29 PM.

  2. #2
    Join Date
    May 2008
    Location
    northern Virginia
    Posts
    5,823
    Well, it really sucks when the head of the presta valve comes off the valve and gets stuck in the pump after you put air in the tire.

    I would replace it.

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  3. #3
    Join Date
    Nov 2009
    Location
    Indianapolis, Indiana
    Posts
    10,952
    Quote Originally Posted by ny biker View Post
    Well, it really sucks when the head of the presta valve comes off the valve and gets stuck in the pump after you put air in the tire.

    I would replace it.
    I didn't think about THAT possibly happening, I was wondering if a wonky Presta valve could cause it to lose air...

  4. #4
    Join Date
    Jun 2010
    Posts
    6,446
    So far, the only flats I've had were due to presto-valve malfunction. Get new tubes.
    So long as the wheels are still turning, life is good.

    Battswebb

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  5. #5
    Join Date
    Apr 2009
    Location
    Tucson, AZ
    Posts
    4,713
    Yeah, I'd replace it, just to be on the safe side.
    At least I don't leave slime trails.
    http://wholecog.wordpress.com/

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  6. #6
    Join Date
    Nov 2009
    Location
    Indianapolis, Indiana
    Posts
    10,952
    I mentioned this as a side note at my LBS this afternoon when I dropped by to pick something up and they also said to change the tube...and apparently they can replace the valve core properly. They said I don't have the right tool for it but they can fix the valve and it can still serve as a spare.

 

 

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