{"model":"mk2","model_name":"MK2 Supra","vehicle":"Toyota Supra A60 (1982–1986, 5M-GE)","document":"Repair Manual","section":"EC","section_name":"Emission Control Systems","page":7,"pages_in_section":16,"title":"Dash Pot (Dp) System","section_header":"Emission Control Systems — Dash Pot (Dp) System","ocr_text":"EMISSION CONTROL SYSTEMS — Dash Pot (DP) System                    EC-7\n\nDASH POT (DP) SYSTEM\n\n[Diagram showing VTV, Air Filter, and Dash Pot components]\n\nNormal Driving                                          Deceleration\n\nDP Diaphragm                                           DP Diaphragm\n                    VTV                                                VTV\n\nEC2134                                                 EC2134\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          Diaphragm                           VTV              Throttle Valve\n\nIdling             Pushed in by return force of        CLOSED           Idle speed position\n                   throttle valve\n\nNormal driving     Pushed out by diaphragm spring      OPEN             High speed position\n\nDeceleration       Pushed in by return force of        CLOSED           Slightly opens and then slowly closes\n                   throttle valve                                        to idle position","image":"https://tsrm.sasquatchvc.com/images/mk2/EC/EC_007.png","url":"https://tsrm.sasquatchvc.com/mk2/tsrm/EC/7","prev":{"page":6,"url":"https://tsrm.sasquatchvc.com/mk2/tsrm/EC/6","api":"https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EC/6"},"next":{"page":8,"url":"https://tsrm.sasquatchvc.com/mk2/tsrm/EC/8","api":"https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EC/8"},"section_url":"https://tsrm.sasquatchvc.com/mk2/tsrm/EC","section_api_pages":["https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EC/1","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EC/2","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EC/3","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EC/4","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EC/5","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EC/6","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EC/7","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EC/8","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EC/9","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EC/10","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EC/11","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EC/12","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EC/13","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EC/14","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EC/15","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EC/16"],"note":"OCR transcript of a scanned Toyota factory manual page; verify critical values (torque specs, part numbers) against the image."}