I have a 1999 Ford Windstar, 3.8L, 80K
The "check engine" light is on and I have used a code reader to determine that the computer is registering a P0455 (large leak detected in the EVAP system). There does not seem to be any drivability concerns. I am wondering where to start checking for the leak. The fuel cap seems to be sealing and does not show any signs of a nick or obstruction creating a bad seal. Help?