As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENGINE SLOW TO SPOOL WITH SOME STRANGE INDICATION COMPARED TO RIGHT ENGINE WITH N1'S MATCHED N2 (LEFT ENGINE) IS 10% HIGHER, OIL TEMP IS 10 DEGREES C HIGHER, OIL PRESSURE IS 10 PSI HIGHER AND N1 SHOWS A COMMAND BOX INDICATION FUEL FLOW WAS SLIGHTLY HIGHER TOO (ROUGHLY 800 LBS/ HR HIGHER. THE AIRPLANE WAS GROUNDED.