Joe Blow Floor Pump Problem
Originally Posted by
HillRider
The pump head isn't supposed to depress the valve stem in a Presta valve, it opens strictly on the pressure differential. However, many (most?) Presta valves will be a bit sticky when the nut is loosened and it takes a large amount of overpressure to open it the first time. The standard cure is to "burp" the valve after you loosen the nut by tapping the stem to get it to puff out a small amount of air and relieve the seat sticking. Then inflate to full pressure.
Wow... I had always kinda assumed that most folks would simple give the tip of presta valve a little tap with a finger to break loose any stuck ones before putting on the pump head. Am I missing something?
Last edited by ksisler; 11-19-12 at 11:22 AM.
Reason: Mental failure.... Hillrider already noted same in his last post