[ianwatsoni]

Yes the first time it backfired the airflow flap did bend. I have replaced it, but it was still running rough so I tweaked timing to see if it made any difference. It wasnt until I realised the leads were of inferior quality and creating a firework display in engine bay that I put old ones back on. Since then runs sweat but subsiquently the idle when warm is now 1100 rpm so I need to drop idle to 850. I haven't done this yet and I now wonder if when I turn engine off that the idle is to high it runs on a bit longer than normal and allows fuel in when finally stops. Cold start injector has been doing what is should be, running fast when cold and cutting out when warm but as I said idle RPM is about 1100 so I will drop to 850 and see if that makes any difference.

Another point is when I do switch off when warm and try to start again will fire for 1-2 sec then die and just will not fire after that but can smell fuel when trying.