What was found
ON THE TAKEOFF ROLL WITH POWER (N1) INCREASING THROUGH 86 PERCENT OIL PRESSURE ON THE LT ENGINE ROSE TO 120 PSI AND STAYED THERE. AFTER REJECTING TAKEOFF THE ENGINE WAS RUN UP THROUGH 86 PERCENT TWICE AND BOTH TIMES PRESSURE INCREASED TO ABOVE 120 PSI. RAN AIRCRAFT ENGINES THROUGH 86% N1 ENGINE OIL PRESSURES STABILIZED AT 83 PSI (BOTH LT & RT). BOTH OIL TEMPERATURES ALSO CHECKED GOOD AT TAKE OFF SETTINGS. ALL VISUAL INSPECTIONS OF OIL PRESSURE TRANSDUCER AND WIRING GOOD, NO DEFECTS NOTED, ALL ENGINE PARAMETERS GOOD. WORK PERFORMED IAW CESSNA CE-750 MAINT MANUAL 79-30-00.