Well I developed a low RPM miss (not bad, but enough to bother me) so I went ahead and pulled the cap, and this is what I found. Would these three points be a cause for it? The plasit below them looks almost burnt, or corroded, or something. Thanks in advance, Steven.

 

My friend just replaced his cap and rotor and his car ran fine afterward. My car ran fine for a long tme, and when I pulled my opti the inside looked really corroded on those pins.

I just replaced the whole opti, why pay 130 dollars when for 100 more you can do the whole thing right.

In my opinion it would suck to have to take it off and do it all over again.

- Z28WannaB

 

Ill second that...optispark is a PITA

 

That definitely isnt right. I wonder if what you are seeing is where the metal conductor on the end of the rotor is actually contacting the cap.

 

Appears to me to be "carbon tracking". That will cause misfiring between cylinders.

What does the tip of the rotor look like? Is it burned, causing the spark to have to jump a large gap to the contacts on the car?

 

The rotor does look burnt too...

What sucks, is that I can't get ahold of the MSD cap and rotor for my life right now...

 

Try Summit? I know they advertise them, hopefully they have them in stock.

-Dustin-

 

Looks like you have some high resistance on the wires to those cyls. causing the spark to jump back to the cap. It sure looks like carbon.Ya need to check the wires on those cyl's against another wire about the same length and see the ohm difference,if any. And your plugs could be wider than they should be.Set them at .035 and get rid of that problem with them.

 

Goodluck with the MSD cap/rotor. Summit and Jegs both have them on backorder till may or june