Leon Schneider wrote:
RonNNN wrote on Tue, 6 Dec 2016 15:39:37 -0600:

4-way valve stem tools cost less than $2. It amazes me why some people
want to reinvent some things.

Assuming the tire is off the rim, can I both remove an old valve and
replace it with a new valve using that cheap 4-way tool?

Easily. To remove the old one you just cut the inside section off. That
keeps you from trying to reuse an old stem.
Next take the new stem, coat it with either tire lube or some very soapy
water and put it through the hole, then pull with the 4 way while moving
your hand in a circle (not turning the valve). It will pull right into
place.

--
Steve W.