Hi guys, I need your advice. My 2000 Bonneville started running bad, missing real bad. Last night I started it and popped the hood and I could see a big blue arc from the wire boot to the bolt holding down the 3/6 coil pack. Do you think that means a faulty coil pack or something else? Jim

Either means bad plug wire boot or a cracked coil.

Pull the wire off and inspect the coil. Do you see anything that looks like a scratch? If so, that'* a carbon trace. Replace the coil. If not, pick up a new set of plug wires and change them all out, but change them one at a time so you get everything back the right way.

Thanks guys, I pulled the boot last night and it was full of alot of black dust, I cleaned that all up and the boot looked to be in good shape but still arced to the bolt head badly. I will take your advice and replace the coil and wires. Jim

Carbon traces are hard to see. If you can see the arch, then best to replace.

Did you say the arch comes through the boot? If so..it'* the wires. If there'* a crack on the coil, it'* the coil.

Yes the arc appears to be coming from under the boot straight to the mounting bolt head.

replace your plug wires, I've had to do this twice for same reason as you describe.