Title: Explain how various piston rings work.
Course: Small Engine Repair (20110-18) > Section: Examining Internal Engine Parts

Explanation should include

- the function of oil rings
- the function of the compression rings
- the function of the Napier/scraper/wiper ring.

Process/Skill Questions:

- What are the different roles of the piston rings?
- What are the implications if these rings break?
- How should the piston rings be installed?
- What is the ultimate job of the piston rings?
- How do the rings control blow-by?