Dynasty L4-153 2.5L SOHC VIN K TBI (1992)
Evaporative Emission Control Canister: Description and Operation
Purpose
Prevents fuel system damage, by venting the system in the event of high internal pressure or vacuum.
Prevents fuel and vapors from escaping into the atmosphere, (except under extreme conditions, see above).
Top Of Evaporative Canister (Non-Duty Cycle Purge Type)
EVAP Canister Operation
Operation
Under certain conditions, fuel and fuel vapors in the tank expand.
When the volume of the fuel tank is exceded, by vapors, or by fuel and vapors, the overflow is routed to the canister.
The vapors are absorbed by the carbon, and any liquid fuel enters the reservoir in the bottom of the canister, (to protect the carbon bed above).
The fuel and vapors are stored in the canister, until the engine is started and certain conditions are met.
