crank pulley is arcing??

[90LXCB7Newbie]

that i know of i first heard it a few days ago...
i got a short vid of it on youtube
http://www.youtube.com/watch?v=C_06lrJt6Gg

sorry its short and loud cause of the belt noise, u cant
hear it n the video, but its makin a loud snap'n sound
when its arcs, i cant figure whats causing it to arc...

n e ideas?

ive done a mild wire tuck and relocated a few things,
and deleted a few items like a/c and p/s, just recently
i replace the cam seal, but it did it before that too...

this is a pic for reference...


n e comments are appreciated...
thanks for ur time tuners

[MR.PHIL]

video did not seem to help at all,the pulley looks fine.
i barely catch any vibration from it .
you should look into replacing that belt .

[90LXCB7Newbie]

i actually just replaced that belt bout 2 weeks ago...

y do u say to replace it n e ways?

i know the video sucks, but its does show the spark
if u watch it a few times u'll catch it, ill try to get
a better vid of it, cuz unfortunately it keeps doin it...

[visualpoet]

Check your wire tuck connections, did you solder and shrinkwrap them? Check/replace your grounds, look for any loose wires hanging around. Did you buy a cheap belt? If you did and the humidity is low where you are, it could be static discharge, but that's pretty rare.

Looking at it again, it looks like static discharge to me. I've heard of it happening from harmonic balancers seperating and causing static from the friction of the two pieces rubbing.