Pride Plumbing was called out for sewage backing up into the home. We used a water pressure device at a cleanout underneath the home and cleared a grease blockage in the main outside sewer septic drain line. Then we found that the Liberty sewage pump was air locking due to it not having a weep hole for relief. We drilled a hole in the lid and corrected the issue. We also provided a cost estimate to replace septic pump's float switch and check valve.