Originally Posted by phantomcow2
sounds like you might be talking about a presta valve...
Do the valve stems look like this?

??
Yep! That's the suspect!
At best, I'm semi-literate when it comes to bikes--and lots of other things.
That explains why I pumped away with no satisfaction. Usually I can look at simple mechanical things and understand them but I felt daunted by that tiny little thing.
presta valve, presta valve, presta valve. I'll remember that. presta valve, presta valve, presta valve, presta valve, presta valve, presta valve, presta valve, presta valve, presta valve, presta valve, presta valve