This document provides information about spark plugs, including:
- Types of spark plugs such as platinum, iridium, and conventional models
- The function of a spark plug is to conduct current to the combustion chamber to create a spark and ignite the air-fuel mixture
- How to install spark plugs including removing old plugs, cleaning the seat, and torquing new plugs to the proper specification
- Spark plug specifications including heat range numbering systems and proper torque values for installation