From the factory the evap system is checked with 3 psi air pressure. Try applying that much and see if one of the hoses isn't opening and maybe soft and collapsing. Other than that I don't know what to tell you, especially since you smoke tested it and replace solenoid. Unless it's a connection or pcm problem which you can check with an ohm meter.
Thursday, April 21st, 2016 AT 6:03 AM