In this unit you will learn about the internal combustion engine in depth through an interactive activity as well as the website content. We will discuss the history, terminology, components, processes, and more. Use the content on this page in order deepen your understanding of the engine and to interact with the activity to demonstrate your learning.

Learning Objectives

Upon completion of this unit you should be able to:

  • Identify the components of an engine
  • Understand the responsibility of each component
  • Describe the process of power production
  • Disassemble and reassemble an engine according to manufacture specification


This unit will be broken down into three components. In order to assess your understanding for this unit, you must complete the following:

  1. Interactive Engine Activity (5% of Assignments grade)
  2. The Engine Quiz Part 1 Theory (5% of Quizzes/Tests grade)
  3. The Engine Quiz Part 2 Lab (10% of Labs grade)

Total:           20% of final grade


Complete the interactive Engine Activity below before proceeding with quiz part 1 and part 2.

The 4 Stroke Cycle

Understanding the process and cycles of a 4 stroke engine are crucial in being able to understand an engine and it’s components. Power occurs through the 4 stroke process as follows:

  1. Intake
  2. Compression
  3. Combustion
  4. Exhaust

Make sure you understand this cycle before proceeding to the quizzes and labs. The greater the understanding of this cycle the easier the disassembly and reassembly process will be!


Although the 4 stroke engine is the most common, there are other types of internal combustion engines.


4 stroke engine


2 stroke engine


Wankel engine


Radial engine

Quiz part 1

You are now ready to complete unit #4 quiz part 1. Please email  or print out to hand into the quiz. Click here for the link.

Engine Removal/Rebuild

The Engine Quiz part 2 requires you to remove and rebuild an engine. However, there are some key steps to take before proceeding. Firstly, you want to CLEAN the engine. The cleaner the easier it is to work on.

Pressure Washing

  1. Use plastic bags to cover important electrical components
  2. Spray the engine with engine de-greaser
  3. Allow the soap to soak for 5 minutes
  4. Pressure wash the engine bay (wear safety glasses)

Engine Removal

  1. Disconnect the battery
  2. Remove the hood
  3. Take photos of engine bay prior to disassembly
  4. Drain the oil and coolant
  5. Remove the radiator
  7. Take photos of each component being removed
  8. Label and disconnect:
    1. Coolant hoses
    2. Electrical wires
    3. Vacuum hoses
    4. AC pump (not the lines)
    5. PS pump (not the lines)
  9. Remove intake manifolds
  10. Remove exhaust manifolds
  11. Unbolt the transmission
  12. Unbolt the motor mounts (support the engine with the crane when doing this)
  13. Remove anything else attached the the car
  14. Attach engine chain to engine
  15. Use engine crane to slowly lift the engine
  16. Ensure nothing else is attached to engine
  17. Slowly lift engine out of vehicle
  18. Rest engine on engine stand (do not leave hanging off crane)
Engine Crane
Engine Stand


The Engine Lab Part 1

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Quiz part 2

You are now ready to complete The Engine Lab Part 2 You must print out the lab in order to complete and hand in.


The Engine Lab Part 2

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