The EVAP system (or Evaporative Emission Control System) on a PT Cruiser is designed to control the evaporative emissions from the fuel tank and associated fuel lines. This system helps reduce harmful pollutants that are released into the atmosphere by preventing volatile organic compounds (VOCs) and hydrocarbons from escaping into the environment. The primary components of this system include a carbon canister, purge valve, hoses, vents, pressure sensors and other specialized parts. The carbon canister stores any vapors generated in the fuel tank before they are drawn off through the purge valve when certain conditions are met. From there, these vapors travel through hoses to be routed back into your engine’s intake manifold where they will be burned as part of your normal combustion process rather than being released into our atmosphere as pollution. In addition to helping protect against air pollution, it also helps maintain proper engine performance by ensuring that the right amount of air-fuel mixture is present within your cylinder heads at all times for maximum efficiency and power output.