MSD coil arching

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Jul 5, 2013 | 07:11 PM

TPI-Formula350-

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From: Long Island New York

Car: 89 Formula 350

Engine: Forged 385 H/C/I

Transmission: 700R4-4300 Stall-lockup

Axle/Gears: BW 9 Bolt 3:70

MSD coil arching

I'm having an issue with the spark jumping from under the coil plug about 1/2" to the metal frame of the MSD coil..any ideas how to correct this?

Jul 5, 2013 | 07:43 PM

Tuned Performance

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From: Mile High Country !!!

Car: 1967 Camaro, 91 z28

Engine: Lb9

Transmission: M20

Axle/Gears: J65 pbr on stock posi 10bolt

Re: MSD coil arching

Spark is going to take the least resistance path of resistance to ground. Check you coil wire connection and all the other ignition components. Excessive plug gap, High ignition wire resistance, condition of the cap and rotor. If this has been going on for a while there maybe carbon tracking making it easier for the spark to jump to ground.