So.. my 75 just failed it's MOT test with high Carbon Monoxide emissions.. time to get diagnosing! I'm going to start by checking the plugs out looking for a stuck injector ( cos it's easy), check the fuel delivery pressure isn't too high... any other ideas? I haven't been to get the car back yet so i've not seen the actual numbers. OBVIOUSLY, it failed on a load of other bits too but nothing that needs diagnosing. Any bright ideas welcome!