The second of six instructional blocks in automotive mechanics, the lessons and supportive information in the document provide a guide for teachers in planning an instructional program in engine fundamentals at the secondary and postsecondary level. The material, as organized, is a suggested sequence of instruction within each block. Each lesson is stated in terms of a specific teaching objective, teaching aids, references, and an outline of information. Upon successful completion of the 49 lessons, students will be able to: (1) describe the principle of converting fuel and heat to mechanical energy, (2) identify the basic types of power units used for motor vehicles, (3) briefly outline the historical development of the internal combustion piston engine and explain its operating principles, (4) describe and relate the systems, parts, components, and mechanisms essential to the mechanical operation of modern piston engines, (5) disassemble, examine, measure, adjust, align, refit, machine, and reassemble components and mechanisms from practice engines, and (6) describe the purpose and functions of modern engine lubricating systems and relate the use of modern lubricants. Included with the course outline are transparency masters and a reference guide listing related books, texts, and other publications. (MW)