car dies when idling gets code P0449 replaced purge vent solenoid and vacuum tubing

Question

we have replaced about 10 parts and it still dies when idlling.  you can smell gas in the car.  
codes are

failed evap vent solenoid and random misfires.
p0449 and p0300We

Where is the connector or wiring?
It says purge OR vent solenoids are defective? Are they two different ones?  
Where are they?
Where is the vapor canister that is fuel saturated?

Answer 1

P0449 Evaporative emission control system / vent control circuit malfunction

If you have a fuel smell that should be addressed first, especially when the engine has a fuel smell there , check the fuel pressure regulator for any fuel that may be leaking at or around the fuel pressure regulator. As for the vent solenoid this is located at the fuel tank area

 Here a fuel pressure regulator see if there is raw fuel around that area, you can also when the engine is at idle remove the regulator vacuum hose and check to see if fuel squirts out if it does the fuel pressure regulator is faulty.