a friend diagnosed a missfire on my 1.4 recently, i replaced all of the sparkplugs and the faulty pencil coil, all was well for a while now the missfire feels like it's back but the diagnostics don't show a fault.
i'm guessing it's a coil issue again, can this happen without being recorded on the ecu?
i'm guessing it's a coil issue again, can this happen without being recorded on the ecu?