monsween

Doh! I jumped straight into technical and forgot the basics! It's a 1971 240z. Even after cleaning the plugs up they're black again after 10mins so I've got a tuning kit for the carb which I'll fit later tonight and lean it out and see if that helps as well. I seem to have read a lot about ballast resistor vs no ballast resister, the petronix coil instructions suggest removing it.

Sorry for the first post being a problem but i've been having difficulties with the ignition system on the car. From what i've read so far the system is wired up correctly and I purchased the car set up like this. Mallory Unilite 47639...? Petronix Flamethrower 3 ohm coil (New) Leads (New) Plugs (New) Battery voltage is running fine at >14v however i'm only seeing 6v at the coil? It's not helping that i've an overfuelling Edelbrock 1405 carb on there however the car was fine for 1000miles or so before starting to misfire after 10miles or so. Car is wired up with a ballast resister and condensor. Any ideas as to why i'm getting such low voltage through the coil and i'm presuming that's why the misfire starts after a period of time. (Measured across the +ve and -ve) Edit: Forgot to mention those photos are of the old coil