Mountain Biking - Pump problems

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Yotsko
09-07-08, 04:33 PM
Has anyone had problems with floor pumps working on presta valves? I bought an ascent one a few months ago and didn't have problems on my mt bike, but when I started using it on my road bike, it just kinda stopped working. It seems like its not actually making a connection with the valve and just inflating air in the hose instead. Anyone?

biker128pedal
09-07-08, 04:55 PM
Does the chuck have two holes? One for Presta and one for Schrader. I had a hose like this and air would come out of the hole not being used depending out the position. There is a valve inside that slide back and forth with gravity. Try changing the position.
Yotsko
09-07-08, 04:58 PM
Yeah, its an over/under type. I'll try some different positions.

Brian6751
09-07-08, 05:01 PM
Mine does that sometimes. I Push the head into the valve and the valve into the head from the tire side and pump to get it started. Works for me.
rbrsddn
09-08-08, 06:18 AM
Are the road valves Presta? If so, you have to loosen the threaded valve on the top before it will allow air in.