Finally I've got a replacement engine fitted to my Z3. It's taken 2-3 weeks (call me Captain Slow!!!) I filled it up with oil and water and tried to start but nothing...... When I had a Mazda MX-3 I used to short out a couple of pins in the diagnostic socket and put an LED between 2 other pins. It was then possible to count the long flashes (10's) and short flashes (units) and read the error codes. I don't have the pukka diagnostic reader for a Z3,is it possible to improvise like I could with the Mazda??? I bought the car with 1 BMW key (the fob shows a yellow light when pressed) I've no idea if the immobiliser is working or if is preventing the engine from starting. Is there any systematic check list on the ZRoadster club website I can follow? Any help would be much appreciated.