Refer part named 'SEPARATOR" in the link ( http://www.japan-parts.eu/toyota/gr...40l-kc/6_781210_057_/body/7751_fuel-tank-tube ) from FJ40 year 1984. Is it also known as Fuel Vapor Separator ? What is the funcrional and operational description of this part ? Are there any inspection / testing / repair procedures from toyota or others for this part ?