See also:

3. Exhaust emission control system
The Exhaust Emission Control System is a highly effective system which controls exhaust emissions while maintaining good vehicle performance. Vehicle modifications This vehicle should not be modif ...

Evaporative Emission Control (Including ORVR: Onboard Refueling Vapor Recovery) System
The Evaporative Emission Control System is designed to prevent fuel vapors from escaping into the atmosphere. (The ORVR system is designed to allow the vapors from the fuel tank to be loaded into ...

Before Starting the Engine
Before you start the engine, you should always: 1. Look around the vehicle to be sure there are no flat tires, puddles of oil or water or other indications of possible trouble. 2. After entering t ...