This manual covers the Mitsubishi 4G6 engine series, applicable to various production years and sub-generations. Known for their robust engineering and reliability, these inline 4-cylinder engines have been utilized across a range of vehicles, often featuring displacements of 1.8L, 2.0L, or 2.4L. Variants may include SOHC or DOHC valve trains, electronic fuel injection (EFI), and some models incorporate forced induction for enhanced performance. This documentation provides comprehensive information for maintaining and repairing these versatile powerplants. The purpose of this English-language Service Repair Workshop Manual is to provide detailed instructions for mechanics and advanced DIY users. It covers full service and repair procedures, including maintenance schedules for components like spark plugs and timing belts, lubrication requirements, and cooling system specifications. The manual also addresses troubleshooting common fault areas such as the ignition and fuel systems, emissions control, and engine mechanicals, utilizing On-Board Diagnostics (OBD-II) for diagnostic purposes.