What was found
IN CRUISE CREW NOTICED ENVIRONMENTAL SYS ODOR & SMOKE IN CABIN. ACCOMPLISHED ABNORMAL PROCEDURE, SMOKE APPEARED TO DECREASE WHEN PRESS SOURCE SELECTOR WAS IN RIGHT POSITION. INSPECTED & TROUBLE SHOT SYS. WHEN REMOVING WATER SEPARATOR FOUND EXCESS WATER & CARBON PUDDLE INSIDE SHROUD & PURGED WATER SEPARATOR DRAIN LINE OF DEBRIS. WATER DRAIN NORMALLY AFTER PURGING DRAIN LINE. REMOVED SURROUNDING DUCTING & CLEANED ALL CARBON BUILDUP. COMPLIED WITH ECS DUCT BURN OUT IAW CHECKLIST. ALL CHECKED OK. R & R WATER SEPARATOR SOCK IAW MM CHAPT 21-50-00. LEAK & OPERATIONS CHECKED OK. INSPECTED ENGS APU BLEED AIR DUCTS & NO OIL RESIDUE NOTED. RAN BOTH ENGS TO 85% POWER & NO ODOR OR SMOKE PRESENT. RAN APU WITH BLEED AIR ON & NO ODOR OR SMOKE NOTED. ALL LEAK & OPERATIONS CHECKED OK.