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7
  • That pump, and especially the head looks quite similar to the pump I own. On mine, you have to put it quite far on to the valve to get it into the right position. I always test by pushing the release valve to ensure it has a decent lock, if it's not on right, the release valve doesn't work. Commented May 13, 2013 at 12:51
  • @DanielRHicks Thanks for your answer and it is really well-explained. However, I have to go back and check if it works at all. I will let you guys know. Commented May 13, 2013 at 13:23
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    With my pump and innertubes, you can't read the air pressure in the tire until after I start pumping, since the presta valve keeps itself closed automatically. Commented May 13, 2013 at 23:10
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    @amcnabb - Yeah, most chucks will depress the presta stem when fully installed, but some don't. Commented May 14, 2013 at 0:28
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    Some pumps will not show tyre pressure when first fitted, you have to pressurise the system by pumping. Commented Jan 2, 2025 at 21:31