This comprehensive repair manual provides detailed instructions and technical specifications for the Mitsubishi 4G9 series engine. It is an invaluable resource for mechanics, enthusiasts, and anyone seeking to understand and maintain this popular engine. The manual covers a wide range of topics, including engine assembly and disassembly, valve timing, fuel system, ignition system, cooling system, lubrication system, and more. It provides detailed illustrations, wiring diagrams, and troubleshooting tips to assist you in diagnosing and resolving engine issues. Whether you are performing routine maintenance or tackling complex repairs, this manual will serve as your essential guide for working on the Mitsubishi 4G9 engine.

The Mitsubishi 4G9 series engine is a ubiquitous powerplant found in a wide range of Mitsubishi vehicles produced between 1987 and 2016. This 1.3 to 1.6-liter naturally aspirated four-cylinder engine boasts a compact design, delivering impressive power and fuel efficiency for its size. The 4G9 series is known for its reliability and durability, making it a popular choice for both everyday driving and motorsport applications.

The 4G9 series engines are characterized by their single overhead camshaft (SOHC) design, with a timing belt driven by the crankshaft. The engine features a cast-iron block and an aluminum cylinder head, with a range of technological advancements implemented throughout its production lifespan. These include multi-point fuel injection, variable valve timing (MIVEC), and even a turbocharged version for increased performance. The 4G9 series was offered in several variations, with different bore and stroke dimensions, compression ratios, and power outputs tailored to specific vehicle models. The diverse range of applications for this engine includes the Lancer, Mirage, Colt, Galant, and many more. Its robust nature and relative ease of maintenance have made the 4G9 series a favorite among enthusiasts and mechanics alike. The availability of comprehensive repair manuals ensures that owners can keep their vehicles running smoothly for years to come.