My 1998 414 Si had been standing unused for a couple of weeks. I tried to start it but the battery was all but flat, turned slowly but wouldn't fire. Charged up the battery... still won't start, still sounded as if battery was flat. So, bought new battery, fully charged, but again it still won't start. Can hear a click, and the lights dim, but nothing even turning now Have tried banging the starter, and have rocked car in gear to free anything up
any suggestion gratefully received
Paul