DS2006 Porsche Cayenne S 4.5 v8 Rough run idle not smooth stumble on acceleration ignition coil spark plugs no faults when cold or hot bank 2 coils beru

16 Jun DS2006 Porsche Cayenne S 4.5 v8 Rough run idle not smooth stumble on acceleration ignition coil spark plugs no faults when cold or hot bank 2 coils beru