A month ago one of the family fleet, a 1992 Renault Alpine GTA V6 Turbo, developed a misfire that was so significant that it became practically undriveable.

I'd tracked the fault to the ignition side of things so, instead of messing around, I decided to replace virtually the whole system. All of the existing parts were of an unknown quantity and, although some initial diagnosis suggested the coil and control module to be the root of the issue, I didn't want to end up chasing problems through a series of old components.