On Nov 1, 4:57*pm, Oren wrote:
On Thu, 01 Nov 2012 13:33:26 -0500, The Daring Dufas

wrote:
Most tire valve 4-way tools have a thread chaser and reamer that could
fix the valve stem so the core will seal. It's possible that it's a bur
or piece of trash stuck in the threads of the valve stem. ^_^

If the core is not bent or cross threaded.

In any case the damage is immaterial except as a cause. Don't even
fool with it, take it to atire shop and get the valve stem replaced.
Not worth fooling with.

Harry K