Diagnosis & Repair
For diagnosis and repair, see Fig 1-Fig 3 . To identify circuits referenced in testing, see ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. For vacuum hose routing, see VACUUM DIAGRAMS article. For testing of systems or components, see BASIC DIAGNOSTIC PROCEDURES - 4-CYL article or SYSTEM & COMPONENT TESTING - 4-CYLINDER article. For removal and installation of components, see REMOVAL & INSTALLATION - 4-CYLINDER article. To check valve clearance and timing, see ON-VEHICLE ADJUSTMENTS - 4-CYLINDER article.