Thanks for that, useful information

Do you know what is the truth regarding the injectors and coding, I just wonder if the mechanic did put the injectors in the wrong pots would they still fire fuel or does the ecu simply not send the signal to fire the injector if the ecu somehow cant "see" the injector that it is expecting? Could i potentially try connecting up 1 injector to each of the 4 possible connectors and seeing if it squirts or could this mess up the ecu so that i would definately have to have it recoded, (although mechanic swears they all in right place!)

I have a hunch that something that is causing this non starting (i now believe basic problem is no fuel being squirted from injector) is due to something going wrong even before the engine was changed, but at that stage all that had been done whilst the old engine was in was to take out the injectors and put them back in again, after realising the cam carrier failure and reason for this. I did see seomeone say that the ecu can "loose the injectors" due to the timing having gone out. seems to be alot of conflicting information out there! (i'm starting to think that even injectors that are not coded to the ecu would probably still enable the car to start but just run incredibly bad..)