Question 1

What Is The Evaporative Emissions System?

Accepted Answer

A complex system of components designed to reduce a vehicles hydrocarbon emissions output

Question 2

How does the EVAP system work?

Accepted Answer

Fuel vapors are stored inside the EVAP system until vehicle conditions are correct. When commanded, the EVAP purge solenoid opens drawing stored fuel vapors into the engine where they mix with the air/fuel mixture and are ultimately burned

Question 3

Does my car have an EVAP system?

Accepted Answer

Almost every car made in the past 50 years has some form of the EVAP system. In 1996 a federal mandate required the EVAP system test itself for system integrity.

Question 4

Do I need to maintain my EVAP system?

Accepted Answer

Most EVAP systems are maintenance free. Refer to your owner's manual for more information

Question 5

What are common EVAP failures?

Accepted Answer

Leaks
Component failures
Circuit problems

Question 6

What are VVT ssystem components?

Accepted Answer

Fuel tank
Fuel pump
Fuel Filler Neck
Fuel lines/hoses
Purge solenoid/valve
Vent solenoid/valve
EVAP canister
Fuel tank pressure sensor
Leak detection device
Engine control module