{"model":"mk3","model_name":"MK3 Supra","vehicle":"Toyota Supra A70 (1986.5–1992, 7M-GE / 7M-GTE)","document":"Repair Manual","section":"EC","section_name":"Emission Control Systems","page":6,"pages_in_section":22,"title":"Fuel Evaporative Emission Control (EVAP) System","section_header":"Emission Control Systems — Fuel Evaporative Emission Control (EVAP) System","ocr_text":"FUEL EVAPORATIVE EMISSION CONTROL (EVAP) SYSTEM\n\n[DIAGRAM: Fuel Evaporative Emission Control System showing Purge Port, Throttle Body, BVSV, Fuel Tank Cap, Check Valve, Charcoal Canister, and Fuel Tank with vapor and air flow paths marked]\n\nFuel Vapor\nFresh Air\n\nTo reduce HC emissions, evaporated fuel from the fuel tank is routed through the charcoal canister to the intake manifold for combustion in the cylinders.\n\n[TABLE: Operating conditions]\nCoolant Temp. | BVSV | Throttle Valve Opening | Canister Check Valve (1) (2) (3) | Check Valve in Cap | Evaporated Fuel (HC)\n\nBelow 35°C (95°F) | CLOSED | — | Positioned below purge port | CLOSED | — | — | — | HC from tank is absorbed into the canister.\n\nAbove 35°C (129°F) | OPEN | Positioned above purge port | OPEN | — | — | — | HC from canister is led into air intake chamber.\n\nHigh pressure in tank | — | — | OPEN | CLOSED | CLOSED | HC from tank is absorbed into the canister.\n\nHigh vacuum in tank | — | — | — | CLOSED | OPEN | OPEN | Air is led into the fuel tank.\n\n[DIAGRAM: Inspection diagram showing fuel vapor lines and connections]\n\nINSPECTION OF FUEL VAPOR LINES, FUEL TANK AND TANK CAP\n\n1. VISUALLY INSPECT LINES AND CONNECTIONS\n   Look for loose connections, kinks or damage.\n\n2. VISUALLY INSPECT FUEL TANK\n   Look for deformation, cracks or fuel leakage.\n\n[DIAGRAM: Fuel tank cap with Check Valve (Vacuum Valve) and Gasket]\n\n3. VISUALLY INSPECT FUEL TANK CAP\n   Check if the cap and/or gasket are deformed or damaged.\n   If necessary, repair or replace the cap.\n\nCheck Valve\n(Vacuum Valve)\nGasket","image":"https://tsrm.sasquatchvc.com/images/mk3/EC/EC_006.png","url":"https://tsrm.sasquatchvc.com/mk3/tsrm/EC/6","prev":{"page":5,"url":"https://tsrm.sasquatchvc.com/mk3/tsrm/EC/5","api":"https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/5"},"next":{"page":7,"url":"https://tsrm.sasquatchvc.com/mk3/tsrm/EC/7","api":"https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/7"},"section_url":"https://tsrm.sasquatchvc.com/mk3/tsrm/EC","section_api_pages":["https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/1","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/2","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/3","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/4","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/5","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/6","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/7","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/8","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/9","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/10","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/11","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/12","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/13","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/14","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/15","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/16","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/17","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/18","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/19","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/20","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/21","https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/22"],"note":"OCR transcript of a scanned Toyota factory manual page; verify critical values (torque specs, part numbers) against the image."}