What was found
AFTER APU START WE SMELLED OIL AND SAW SLIGHT SMOKE IN CABIN. AFTER MOTORING ENGINE BEFORE START, SMOKE REAPPEARED A LITTLE MORE DENSE WITH SMELL AGAIN. MCC ELECTED TO PERFORM FINAL RUN WITH SITE REP PERFORMED 3 MIN APU RUN AND 3 MIN EACH IDEL ENGINE RUNS WITH SITE REP PRESENT. SITE REP CONFIRMED AT THE END OF RUN THERE WERE NO DEFECTS OR ODORS TO REPORT. CHECKS SATISFACTORY IN REF TO NJA CESSNA 700 ENGINE RUN AND TAXI CHECKLIST.