What was found
ON THURSDAY 15 MAY 2025 GIV N163JW S/N 1071 DEPARTED KVNY GOING TO MMTL. DURING TAKEOFF ONE OF THE PASSENGERS NOTICED FUEL SPRAYING OFF THE OUTBOARD RIGHT WING. THE CREW CALLED ATC STATED THEIR PROBLEM AND ASKED TO RETURN TO KVNY, AT WHICH TIME THE TOWER DECLARED IT AN EMERGENCY. WHILE TURNING AROUND TO COME BACK TO KVNY THE FUEL STOPPED SPRAYING AFTER ABOUT 10. MINUTES. FOUND A BUILDUP OF A CORROSION PREVENTATIVE PRIMER CAUSING THE FLOAT VALVE TO STICK AND HANGUP. THEY CLEANED THE VALVE AND PERFORMED OPERATIONAL CHECK WITH NO DEFECTS NOTED. I ELECTED TO ALSO PERFORMED A MAINTENACE CHECK FLIGHT TO VERIFY THE ISSUE WAS FIXED NO DEFECTS NOTED DURING OR AFTER THE FLIGHT