B767 FUMES IN COCKPIT.

Narrative

UPON ARRIVING AT THE ACFT IN JFK; WE NOTICED A STRONG EXHAUST ODOR COMING FROM THE AIR CONDITIONING SYS. WE STARTED THE APU AND CALLED FOR THE MECHS TO TURN OFF THE GPU'S. WE OPENED ALL OF THE DOORS AND COCKPIT WINDOWS AND AIRED OUT THE ACFT AS MUCH AS POSSIBLE. WE DELAYED BOARDING THE ACFT UNTIL WE FELT THAT THE FUMES HAD ADEQUATELY DISSIPATED. ONCE AT CRUISE ALT; WE BECAME AWARE OF THE LINGERING SMELL OF THE FUMES AGAIN IN THE COCKPIT AFTER A FLT ATTENDANT CAME TO THE COCKPIT AND MENTIONED THE SMELL. IT WASN'T IN THE CABIN BUT; FOR SOME REASON; IT HAD STAYED IN THE COCKPIT. AS A PRECAUTION; WE RAN THE CHKLIST AND WENT ON OXYGEN. BY THIS TIME WE WERE A GOOD 40 MINS INTO OUR 1 HR 30 MIN FLT TO CVG. WE BOTH FELT OK; BUT WE DID NOTICE THAT WE WERE MAKING SMALL; FORGETFUL MISTAKES; SO WE DECIDED TO CALL AND BE RELEASED FROM THE REST OF OUR ROTATION; JUST IN CASE. WE DECIDED THAT CVG WAS OUR CLOSEST SUITABLE ARPT; SO WE CONTINUED ON TO OUR DEST. I WAS FLYING AND; AS A PRECAUTION; I ELECTED TO AUTOLAND THE AIRPLANE. WE WERE MET BY THE PARAMEDICS AND ALL GIVEN A CHK-UP BEFORE BEING RELEASED.