What was found
AT 400 FEET AFTER TAKE OFF - EXHAUST SMELL ENTERED CABIN THROUGH FLOOR VENTS. TURNED BLEEDS OFF SMOKE STOPPED. AFTER ONE MORE ATTEMPT AND OFF SMOKE STOPPED. SMOKE DID NOT CONTINUE ON THE THIRD TIME TO TURN ON BLEEDS. COMPLETED THE RUN WITH NO DELAY. MAINTENANCE OPERATED ENGINES AT MULTIPLE POWER SETTINGS AND WITH LEFT BLEED ONLY, RIGHT BLEED ONLY, AND BOTH BLEEDS TOGETHER IN BOTH MANUAL AND AUTO TEMP CONTROL SETTINGS. RAN ENGINES FOR 20 MINUTES. NO DEFECTS NOTED. OAT -20*C