"Gary and Karla" <klawre@alltel.net> wrote in
news:gNYGd.425$811.148@fe61.usenetserver.com:

> I just replaced both low beam headlight bulbs. 98 accord.Both of them
> had a strange bubble protrusion from the side of the bulb but were
> still burning. What would cause this?
>

The bulb installer left oils from their skin on the bulb from touching
it.The oils carbonize from the heat,and then get the quartz glass even
hotter,it creats a hot spot melting the glass.

That is why one should use gloves or a paper towel/cloth to hold the bulb
when installing halogen lamps.

--
Jim Yanik
jyanik
at
kua.net