Senior Member
Join Date: Dec 2006
Location: Williamston, MI "Wee-um-stun"
Posts: 727
Bikes: Uh... road, mtb, tour, CX (kludged), 3spd, 'bent, tandem, folder (the fam has another, what, 8)
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I've had this problem before and fixed it. I forget how... I recall it was easy.
The tube is fine. It pumped with another pump. I wish I knew how a pump works. Why does the air now just go in and then back out. What part keeps the air in?