Hi All,

I recently noticed on my '84 760 Turbo that there's some arcing going on between the HT lead from the ignition coil and the negative terminal on the coil ( where the white/red wires attach). The sparks are coming from underneath of the HT lead boot. Any ideas as to what this is? I was also wondering if anyone knows which terminal on the coil that the noise suppressor hooks to?

Thanks,
Dave

Quit messin around, you say the coil is cracked change it. End of story!

Well I'm not messing around. Someone replied to my post that the coil COULD be cracked. I haven't been able to confirm this yet as I'm out of town for the week and I'm driving my 960. A new coil is rather expensive ( I think FCP wants around $80 for one). You're probably right though, I do need a coil. What about a used one? FCP's site says that the coil on my car is specific to the 1984 year model. Is this true? It looks just like the one on my 240. I know that I need ignition wires for sure. Mine are the original ones.

Thanks,
Dave

I have also seen hairline crack develop at the neck of the coil. Temp fix, electrical tape around the neck.

There is enough dirt on the coil and boot to allow the current to short circuit.

Eventually a burnt track will cause a permanent problem.

I suggest that you clean the coil, the wire and boot. I have used WD 40 and a clean rag, or removed the parts and washed them in soap and water, Don't submerge the coil, and make sure everything is dry before you use it.

In the past, I have washed all plug wires, distributor cap and rotor. Look under the water shield on the distributor cap, it is probably filthy. A lot of people throw this shield away. Someone on this board puts these parts in the dishwasher! I'll bet his wife loves that.
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'96 855R, 95 855, '95 854, 90 744TI 377,000 miles on 7 bricks

Thanks James. I'll clean the coil and see what happens. I'm going to order new wires for it anyway since the old ones are toast.