This manual covers the Mitsubishi 4G9 engine series, utilized across various production years and found in popular models such as the Mitsubishi Lancer, Mirage, and Galant. These inline 4-cylinder engines, available in displacements from 1.6L to 2.0L, feature SOHC or DOHC valve configurations and employ multi-point fuel injection and electronic ignition systems. Designed for reliability and efficiency, the 4G9 series engines are water-cooled and have been engineered to meet emission standards like Euro 2 and Euro 3, depending on the specific variant and region. This comprehensive Service Repair Workshop Manual provides essential information for the maintenance and repair of the Mitsubishi 4G9 engine. It details critical procedures, technical specifications, and troubleshooting guidance for owners, mechanics, and technicians. Coverage includes recommended maintenance schedules, fluid capacities, spark plug specifications, and timing belt replacement intervals. Understanding and applying the information within this manual will ensure optimal performance, longevity, and safe operation of your vehicle.