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@Wrongcog
I got a track pump question.
Topeak Joe Blow (yellow and black type) isn't working. I've had it a couple of years. If I attach the Presta head to my valve and secure it with the lever, when I pump no air is pushing into the tyre, it is escaping from the opposite (Schrader) side.
I've removed both O rings and they look ok. I've tightened the flat head screw bit that secures the lever... Is it time for a new pump or am I overlooking something?
Over to you brain team.