Originally Posted by
noglider
No, my pump is the Topeak RaceRocket Mini Pump. As I said, the core was loose when I took the tube out of the box. The bike shop owner said he's seen this a lot lately. I wonder why. As I said, I'll check my tubes before I put them in my tool bag and I will also bring the valve tightening tool.
Usually I hear complaints about the Lezyne, but I also have that RaceRocket and it too has never removed a core.
I have heard that for some reason those cores are coming out in newer tubes, but I didn't think much of it because my floor pump is a screw on chuck, and it didn't do anything to the cores either.
Needless to say, I'm baffled, maybe some tubes just come with the cores loose? Probably would be wise to tighten them.