My LT1 has been running rather annoying lately. I think I might have it tracked down to the ignition system but can't find exactly what it might be. Below is what I have tried.

---wires are new Taylor Spiro Pro OVC
---plugs are new Autolite AP106. Also tried NGK TR55.
---3 different ignition coil wires
---Opti is about a year and a half old
---ICM is about a year old
---ignition coil is MSD stock replacement.
---reseated all wires

The problem is at idle mostly. The idle is fairly rough and it feels like it is missing. Also the engine is very loud during acceleration...it isnt a normal type of loud. I have roller rockers which are loud but this "loud" is almost like I have another set of roller rockers in there. In the pitch black dark I can see an aura around 6 plugs, the ignition coil and a couple of the Opti ports. Also I can see an illumination b/w some of the wires which is probably a spark jumping from wires. The brightest illumination seems to be coming from the ignition coil but I cant tell for certain. If I give the car some throttle everything appears to go away except for the spark plug aura. Could a bad ignition coil cause these problems? Any suggestions?

 

Apply dielectric grease around all of your connections to eliminate arcing. New wires should not allow any arcing between the wires themselves. Try swapping your stock coil back in to see if that changes the issue.

 

Is it possible that there is too much resistance with the Taylor OVC wires and the spark is jumping? Anyone else had problems with the Taylor wires? I read that the 8mm spiro pros are rated at 300 ohms/ft.

 

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