{"model":"mk3","model_name":"MK3 Supra","vehicle":"Toyota Supra A70 (1986.5–1992, 7M-GE / 7M-GTE)","document":"Repair Manual","section":"FI","section_name":"EFI System","page":21,"pages_in_section":126,"title":"Symptom — Engine Hesitates AND/OR Poor Acceleration","section_header":"EFI System — Troubleshooting","ocr_text":"SYMPTOM — ENGINE HESITATES AND/OR POOR ACCELERATION\n\nCHECK CLUTCH AND BRAKE\n\nBAD\n1. Clutch — Slips\n2. Brakes — Drag\n\nOK\n\nCHECK FOR VACUUM LEAKS IN AIR\nINTAKE LINE\n\nBAD\n1. Oil filler cap\n2. Oil dipstick\n3. Hose connections\n4. PCV Hoses\n5. EGR system — EGR valve system open\n\nOK\n\nCHECK AIR FILTER ELEMENT\n\nBAD\nElement — Clean or replace\n\nOK\n\nCHECK DIAGNOSIS SYSTEM\nCheck for output of diagnostic code.\n(See page FI-23)\n\nMalfunction\ncode(s)\nDiagnostic code(s) (See page FI-26)\n\nNormal code\n\nCHECK IGNITION SPARK\n7M-GE\n(See page IG-5)\n7M-GTE\n(See page IG-10)\n\nBAD\n1. High tension cords\n2. Distributor (7M-GE) or cam position\nsensor (7M-GTE)\n3. Ignition coil\n4. Igniter\n\nOK\n\nCHECK IGNITION TIMING\n1. Connect terminals TE1 and E1 of the\ncheck connector.\n2. Check ignition timing.\nSTD: 10° BTDC @ idle\n[w/ connect terminals TE1 and E1]\n\nNO\nAdjust ignition timing (See page IG-20)\n\nOK\n\nCHECK FUEL PRESSURE\n(See page FI-71)\n\nBAD\n1. Fuel pump (See page FI-70)\n2. Fuel filter\n3. Fuel pressure regulator (See page FI-81)\n\nOK\n\nCHECK INJECTORS\n(See page FI-83)\n\nBAD\nInjection condition\n\nOK\nCONTINUED ON PAGE 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transcript of a scanned Toyota factory manual page; verify critical values (torque specs, part numbers) against the image."}