On Wed, 7 Dec 2016 05:35:41 -0000 (UTC), 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?
Remove with a utility knife, install with the tool. Soap the stem
first.