The compressor works fine with regular Schrader valves on my other bicycles but, on my MTB with presta valves with the adapter, it just doesn’t want to work!
Also, when I [use the inflation gun alone](https://youtu.be/JHOgYsmuOII?si=DJdun8xclmd7ACP8) (video), I can use it to deflate the tire without any problem.

How can I use it with the compressor?

*BTW, at first, the gauge on the inflation gun shows about 40 psi because I ride with high pressure for the street.*

Help! My Schrader valve adapter doesn’t want to work with my compressor.
byu/Caterpillar1967 inMTB



by Caterpillar1967

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3 Comments

  1. That connection requires the valve pin in the schrader valve to push against a pin to move air. You may need to do some hackery or get a different inflator tool.

  2. Are you just seating the bead? If so pull the valve and pump it full of air until you get your three pops, then remove the chuck – reinstall the valve – and inflate by hand

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