{"model":"mk2","model_name":"MK2 Supra","vehicle":"Toyota Supra A60 (1982–1986, 5M-GE)","document":"Repair Manual","section":"EM","section_name":"Engine Mechanical","page":4,"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\nExcessive oil consumption | Valve stem and guide worn | Check valves | EM-18\n | Valve stem seal worn | Check seals | EM-19\n\nPoor gasoline mileage | Fuel leak | Repair as necessary | \n | Air cleaner clogged | Check air cleaner | \n | Incorrect ignition timing | Reset timing | IG-10\n | EFI system problems | Repair as necessary | \n | • Injector faulty | | \n | • Deceleration fuel cut system faulty | | \n | Idle speed too high | Check ISC system | FI-60\n | Spark plugs faulty | Inspect plugs | IG-5\n | EGR system always on | Check EGR system | \n | Low compression | Check compression | EM-6\n | Tires improperly inflated | Inflate tires to proper pressure | \n | Clutch slips | Troubleshoot clutch | \n | Brakes drag | Troubleshoot brakes | \n\nUnpleasant odor | Incorrect idle speed | Check ISC system | FI-60\n | Incorrect ignition timing | Reset timing | IG-10\n | Vacuum leaks | Repair as necessary | \n | • PCV hoses | | \n | • EGR valve | | \n | • Intake manifold | | \n | • Air intake chamber | | \n | • Throttle body | | \n | EFI system problems | Repair as necessary 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transcript of a scanned Toyota factory manual page; verify critical values (torque specs, part numbers) against the image."}