That happens a lot. There is no valve in the pump, it is in the tube. So you may be putting the tire valve in too deep and not letting it stop the air inside the tube from rushing back in to the pump. Steven Willis The Bike Stand 1778 East Second Street Scotch Plains NJ 07076 908-322-3330 http://www.thebikestand.com
> Greetings All:
>
> I've got a Silca that won't inflate a tire and I'm not sure why. Its
>
> got the chromed oval type plastic head with a single rubber plug
>
> sized for presta that fits inside a white nylon cap. It seems that
>
> air does get pumped into the tire, but is immediately released on the
>
> return stroke. Is there perhaps a part missing in the head, or could
>
> it be an issue with the pump itself ? BTW, the pump is NOS.
>
> Thanks.
>
> Len Grossman
> S. Orange, NJ