Sorry if that sounds obvious, just in case:
Pump works fine with your hybrid but not on your road bike? What type of valves are there on your road bike? Usually hybrids have tubes with Schreader valves and road bikes almost always have Presta...
Some (few) pumps work with both at the same time; for other pumps you have to unscrew parts and rescrew in a different order; for other pumps there are two sides, one for Presta, one for Schreader.




I am having a devil of a time with the pump I have, which works fine on my hybrid. And I was able to fill my tires with my brother in law's pump, but can't keep doing that. Now I will go home and try again. My last resort, bring in either my brother in law or friend who can show me what the heck I'm doing wrong.
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