What was found
FLIGHT 9205, AFTER TAKEOFF, STRONG SCENT OF BURNED RUBBER IN COCKPIT. (NO SMOKE) THE PNEUMATIC PRESSURE GAUGE PEGGED OVER THE RED LINE AND VACUUM PRESSURE GAUGE PEGGED AT ZERO, WHEN TRYING TO ADD HEAT, USE DEICE BOOTS ON ANY OTHER ENVIRONMENTAL PRESSURE FUNCTION, SMELL GETS SIGNIFICANTLY WORSE. REPLACED PRESSURE REGULATOR AND TEST RAN ENGINES. PERFORMED BLEED AIR SYSTEM OPERATIONAL CHECK SYS, NO SMELL DETECTED.