Originally Posted by cyccommute

Give it up, FB. Presta only pumps are almost as rare as hen's teeth. You are far more likely to run across a switchable pump than you are to run across a pump that does only presta or only schrader. So likely, in fact, that the first response to sdh02005's problem should have been the one that License2I11 gave. If that didn't fix the problem, then you go to checking for presta only pumps.