This two-volume set, consisting of a theory-based Classroom Manual and corresponding Shop Manual, provides users with a complete introduction to automotive engine repair and rebuilding. The theory, diagnosis and repair of engine operating systems, intake and exhaust systems, cylinder heads, camshafts, valve trains, cylinder blocks, and today's high-performance engines are covered in detail throughout. In response to industry trends, this edition features greater emphasis on overhead cam (OHC) and dual overhead cam (DOHC) systems, including replacing timing belts on DOHC engines and servicing engines with variable camshaft timing and lift. Discussion of the theory of engine operation has also been expanded to include alternate power systems, such as hybrid vehicles, fuel cells, and the latest electronic ignition (IE) systems. In addition, Job Sheets have been added at the end of each chapter in the Shop Manual to provide opportunities for hands-on practice of must-know procedures.