{"model":"mk2","model_name":"MK2 Supra","vehicle":"Toyota Supra A60 (1982–1986, 5M-GE)","document":"Repair Manual","section":"EM","section_name":"Engine Mechanical","page":3,"pages_in_section":64,"title":"Troubleshooting (Cont'd)","section_header":"Engine Mechanical — Troubleshooting","ocr_text":"TROUBLESHOOTING (Cont'd)\n\nProblem | Possible cause | Remedy | Page\n\nEngine hesitates/Poor acceleration | Vacuum leaks\n• PCV hoses\n• EGR valve\n• Intake manifold\n• Air intake chamber\n• Throttle body\n• ISC valve | Repair as necessary |\n\nPulling in air between air flow meter and throttle body | Repair as necessary | FI-58, 63\n\nIncorrect ignition timing | Reset timing | IG-10\n\nEmission control system problem (cold engine)\n• EGR system always on | Check EGR system |\n\nIgnition wiring faulty | Inspect wiring |\n\nFuel system clogged | Check fuel system | FI-44\n\nAir cleaner clogged | Check air cleaner |\n\nFuel system problems | Repair as necessary |\n\nSpark plugs faulty | Inspect plugs | IG-5\n\nEngine overheats | Check cooling system | CO-2\n\nLow compression | Check compression | EM-6\n\nEngine diesels (runs after ignition switch is turned off) | EFI system problems | Repair as necessary |\n\nMuffler explosion (after fire) on deceleration only | Deceleration fuel cut system always off | Check EFI (fuel cut) system | FI-79\n\nMuffler explosion (after fire) all the time | Air cleaner clogged | Check air cleaner |\n\nEFI system problem | Repair as necessary |\n\nIncorrect ignition timing | Reset timing | IG-10\n\nEngine backfires | Vacuum leak\n• PCV hoses\n• EGR valve\n• Intake manifold\n• Air intake chamber\n• Throttle body\n• ISC valve | Check hoses and repair as necessary |\n\nPulling in air between air flow meter and throttle body | Repair as necessary | FI-58, 63\n\nEFI system problem | Repair as necessary |\n\nInsufficient fuel flow | Troubleshoot fuel system |\n\nIncorrect ignition timing | Reset timing | IG-10\n\nCarbon deposits in combustion chambers | Inspect cylinder head | EM-18\n\nExcessive oil consumption | Oil leak | Repair as necessary | LU-4\n\nPCV line clogged | Check PCV system | EC-4\n\nPiston rings worn or damaged | Check rings | EM-38","image":"https://tsrm.sasquatchvc.com/images/mk2/EM/EM_003.png","url":"https://tsrm.sasquatchvc.com/mk2/tsrm/EM/3","prev":{"page":2,"url":"https://tsrm.sasquatchvc.com/mk2/tsrm/EM/2","api":"https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/2"},"next":{"page":4,"url":"https://tsrm.sasquatchvc.com/mk2/tsrm/EM/4","api":"https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/4"},"section_url":"https://tsrm.sasquatchvc.com/mk2/tsrm/EM","section_api_pages":["https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/1","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/2","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/3","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/4","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/5","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/6","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/7","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/8","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/9","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/10","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/11","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/12","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/13","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/14","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/15","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/16","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/17","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/18","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/19","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/20","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/21","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/22","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/23","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/24","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/25","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/26","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/27","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/28","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/29","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/30","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/31","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/32","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/33","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/34","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/35","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/36","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/37","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/38","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/39","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/40","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/41","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/42","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/43","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/44","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/45","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/46","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/47","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/48","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/49","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/50","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/51","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/52","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/53","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/54","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/55","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/56","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/57","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/58","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/59","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/60","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/61","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/62","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/63","https://tsrm.sasquatchvc.com/api/pages/mk2/tsrm/EM/64"],"note":"OCR transcript of a scanned Toyota factory manual page; verify critical values (torque specs, part numbers) against the image."}