This comprehensive Mitsubishi S4K S6K Engine Workshop Service Repair Manual provides detailed instructions and technical specifications for repairing and overhauling Mitsubishi S4K and S6K engines. The manual assumes the user is familiar with general automotive practices and delves into a range of topics, including engine disassembly, component inspection, repair procedures, reassembly, and troubleshooting. It covers essential aspects of engine operation and maintenance, offering valuable insights into the intricate workings of these engines. With detailed diagrams, illustrations, and precise instructions, this manual empowers technicians to perform a wide array of service and repair tasks efficiently and effectively.

The Mitsubishi S4K and S6K engines are a family of gasoline engines produced by Mitsubishi Motors. They were known for their robust construction, high reliability, and moderate power output. These engines were primarily used in a variety of Mitsubishi automobiles, including the Lancer, Galant, and Pajero, from the 1980s to the early 2000s. The S4K engine, a 1.6-liter four-cylinder unit, was introduced in 1983 and featured a single overhead camshaft (SOHC) design. The S6K engine, a 1.8-liter four-cylinder unit, was introduced in 1988 and also featured a SOHC design. Both engines were further developed over the years with various revisions, including the introduction of fuel injection and multi-valve configurations. They were offered in both naturally aspirated and turbocharged forms, with the turbocharged versions providing higher power output for certain models. The S4K and S6K engines were popular for their durability and fuel efficiency. They were also relatively simple to maintain and repair, making them attractive to both individual owners and professional mechanics. However, these engines were known to suffer from certain common issues, such as valve stem seal leaks, timing belt failure, and oil consumption. Despite these issues, the S4K and S6K engines were reliable and often served their owners well for many years.