Fuel Shooting Out Fuel Bowl Vent

Here Is My Set Up. I Have A 830 DP With Annular Spray Holley. 440/4 Speed. Electric Blue Pump. Pressure Set At 6lbs. I Have Just Hot Wired It For Know Till I Can Figure Out The Oil Shut Off Switch. When The Bowls Fill Up It Then Shoots Out The Rear Vent. What Am I Doing Wrong.