Toilet Flush Problems Home › Forums › Public Forums › General Plumbing › Toilet Flush Problems This topic has 1 reply, 2 voices, and was last updated 23 years, 3 months ago by chili_1. Viewing 1 reply thread Author Posts 5 Jun 2001 at 9:15 pm #274992 MasterPlumbersKeymaster I am having a problem with my Toilet. When I flush I get a large bubble of air from the drain, then it starts to flush. I am also not getting a full flush everytime…any help will be appreciated. 6 Jun 2001 at 3:07 pm #290884 chili_1Participant A strong possibility is that your air line (usually goes to the roof) is blocked, causing vacuum and loss of down pressure to get it to drain. Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In