|
|
EFI system problems Vacuum leaks: • PCV line • EGR line • Intake manifold • T–VIS valve (3S–GTE) • Throttle body • ISC valve (3S–GTE and 5S–FE) • Brake booster line Air suction between air flow meter and throttle body (3S–GTE) Insufficient fuel flow Incorrect ignition timing Incorrect valve clearance Carbon deposits in combustion chambers Repair as necessary Check PCV system Check rings Troubleshoot fuel system Reset timing Adjust valve clearance Inspect cylinder head Oil leak PCV line clogged Piston ring worn or damaged Air cleaner clogged EFI system problems Incorrect ignition timing EFI system problems Incorrect ignition timing EGR system faulty Repair as necessary Check hoses and repair as necessary FI–13 IG–25 , 29, 37 EM–13 ,17,22 EM–92 , 127, 161 EXCESSIVE OIL CONSUMPTION Check air cleaner Repair as necessary Reset timing Repair as necessary Reset timing Check EGR system Engine diesels (runs after ignition switch is turned off) EM–94 ,129, 163 AFTER FIRE, BACKFIRE Muffler explosion (after fire) on deceleration only Muffler explosion (after fire) all the time Deceleration fuel cut system always off Valve stem and guide bushing worn ENGINE DIESELING Check EFI (fuel cut) system IG–25 , 29, 37 EC–9 , 22, 38 Valve stem oil seal worn Excessive oil consumption Repair as necessary Engine backfires Possible cause Possible cause Possible cause IG–25 , 29, 37 Check seals Problem Remedy Remedy Problem Remedy Problem Page Page Page MA–5 Check valves and guide bushing EM–204 , 244, 289 – ENGINE MECHANICAL Troubleshooting EM–10 |