Hi Oz,
Have you read the Kegworth accident report?
http://www.aaib.gov.uk/cms_resources...pdf_502831.pdf
2.1.1.1 Fault diagnosis:
"The commander said that he gained from the engine instruments no clear indication of where the trouble lay. He had, however, disengaged the autopilot 8 seconds after the first compressor surge and most of his attention thereafter would probably have been on the handling of the aircraft and the flight instruments"
Why increase your workload at the expense of fault diagnosis?