Fei

Should there be multiple sparks on a single plug? I pull #1 today since I'm having very bad idle issues and checked the plug. For each TDC of that Cylinder I get 4(maybe 5) sparks. Is this normal? Or do I have bad ICM?

hotrod18_69

You don't a MSD box hooked up do you?

Fei

Nope sure don't.

Fei

no one knows this?

shoebox

Never heard of such a thing on the stock system.

Fei

Odd. I think this maybe causing my miss and bad timing. I will try swapping some of the ign parts and see if that fixes it

96ZCamaro

How did you test it to make sure it was actualy sparking that # of times?

Fei

pull the plug and ground it and watch it fire
So changed the cap and rotor. This fixed the miss fire but it still sparks multiple times on each cylinder. A little odd but I'm ok with that. And I know for sure that there us no after market ignition on there seeing as I just pulled this setup out of my 94 and put it in my 92. I'm sure I would have found a box seeing as I rewired the whole car :-p