Home › Forums › Stay Dirty Lounge › Service and Repair Questions Answered Here › Old car, weak ignition spark. › Old car, weak ignition spark. February 5, 2020 at 4:08 am #896004 Chris MollerParticipant Yeah, I went back and forth a few times, whether to spend the bucks on a Pertronix, but I figured, after almost half a century driving the car, it would be worth it.