: The Enlightenment during the 17th â 18th century produced philosophers and scientists who focused on human reason and rational thought to solve problems and provide ethnical systems for living. Enlightenment thinkers believed in natural over supernatural forces or laws.
A purge valve is the part of the vehicle Evaporative Emission Control (EVAP). system. The EVAP system prevents fuel vapors in the fuel tank from escaping into the atmosphere.
1 Release the retaining tab on the EVAP canister purge mounting bracket and remove the EVAP canister purge valve. 2  Inspect for carbon release exiting the EVAP canister purge valve. 3  Refer to Evaporative Emission (EVAP) System Cleaning.