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I have a 67 Cougar with a 289 and dual quad carburetors. I just replaced the spark plugs (Motorcraft ASF42C), spark plug wires (Concours correct 7mm), and distributor cap. Upon starting and running the engine I noticed that there is arcing between the high voltage coil wire boot and the negative terminal on the coil. I am looking for suggestion as to the cause of this. By the way the coil is a Pertronix 1.5 ohm flame thrower. And the the spark plugs are gaps at .054 as I have GT40 heads. Please help?