To disconnect a vapor hose from any component securely grip component with one hand and vapor hose with the other hand as close as possible to connection. Sharply twist hose along its axis to break the connection. No adhesive is used to make hose connections during vehicle assembly, but aging of the connections causes a temporary bond to exist.
If the connection is stubborn and the above method does not work, grip the hose with a pair of small pliers directly over the joint and twist again. Remove the vapor hose from the component.