Version 1 and 2: Upon successful completion of the course, students should be able to: identify and explain how to safely use the hand tools and equipment required to service automotive engines; identify and explain the purpose of internal and external engine components; describe the operation of two-stroke and four-stroke cycle engines; explain the difference in operation between gasoline and diesel engines; calculate engine displacement and compression ratio; perform vacuum testing for ignition timing, valve timing, leaking valves, and worn piston rings; perform compression and cylinder leakage testing; test and service engine cooling systems; remove and install crank shaft seals; service the engine lubrication system; service valve train systems; remove and replace valve stem seals; measure voltage, current, and resistance in automotive engine electrical circuits; test and service 12 volt batteries; remove, test and reinstall starters; explain the operation of the automotive charging system; remove, disassemble and install alternators; test temperature and pressure sensor units; test sending units; use electrical diagnostic procedures to test warning devices; describe the operation of the ignition system; use appropriate safety procedures.