"phaeton" wrote in message

It's not an errant ignitor- I sat and watched all the burners I was
using tonight to see if I could see something when it made the noise.
It snapped a couple of times over a few minutes, but I couldn't see any
change in any flame patterns or colors or anything.

If the igniter is snapping, you won't see the flame doing anything. Look at
where the igniter gap is to see if it is arcing.