{"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":8,"pages_in_section":22,"title":"Dash Pot (Dp) System","section_header":"Emission Control Systems — Dash Pot (Dp) System","ocr_text":"7M-GE\n7M-GTE\n\nDP Diaphragm\nVTV\nAir Filter\nDP Diaphragm\nVTV\nAir Filter\n\nEC-2517 EC-2518\n\nNormal Driving\nDeceleration\n\nVTV\nDP Diaphragm\nVTV\nDP Diaphragm\n\nEC3440\nEC3439\n\nTo reduce HC and Co emissions, when decelerating the dash pot opens the throttle valve slightly more than at idle.\nThis causes the air-fuel mixture to burn completely.\n\nCondition\nDiaphragm\nVTV\nThrottle Valve\nIdling\nPushed in by return force of throttle valve\nCLOSED\nIdle speed position\nNormal driving\nPushed out by diaphragm spring\nOPEN\nHigh speed position\nDeceleration\nPushed in by return force of throttle valve\nCLOSED\nSlightly opens and then slowly closes to idle position","image":"https://tsrm.sasquatchvc.com/images/mk3/EC/EC_008.png","url":"https://tsrm.sasquatchvc.com/mk3/tsrm/EC/8","prev":{"page":7,"url":"https://tsrm.sasquatchvc.com/mk3/tsrm/EC/7","api":"https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/7"},"next":{"page":9,"url":"https://tsrm.sasquatchvc.com/mk3/tsrm/EC/9","api":"https://tsrm.sasquatchvc.com/api/pages/mk3/tsrm/EC/9"},"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."}