Unclogging the Main Line
If you have more than one clog in your house then it is time to clean the main drain. A backed up main line often causes a sink clog, at the same time as a bathtub or toilet clog.
To fix the main line you will need:
- wrench
- waste bucket
- plumber’s snake
- garden hose
1. Go to your basement or crawl space and locate the vertical large drain pipes. These are the main line pipes. Some people find their main lines in the pantry closet, or garage. Find the plugs on the pipes which are sometimes located outside along the foundation of your house.
2. Use your wrench to loosen the square fitted caps on the plugs. Make sure to have your waste bucket handy for any immediate release.
3. Insert the your plumber’s snake in both directions of pipe to break up any blockage. If you have a tough obstruction, a high pressure water blast from your garden hose might help loosen the debris.
4. Finish by tightly screwing the square cap back on the main drain.
Related Info
- Repairing a garden hose
- Common Plumbing Problem Fixes
- Calcium Buildup
- Running Toilets, Part Three
- Garbage Disposal Maintenance

February 9th, 2010 at 5:31 pm
We recently had our main sewer line unclogged, even replaced 5′ of the existing line outside and added 2 cleanouts. My question is this. Occasionally, now the drain line makes a moaning noise that can be heard thoughout the house, very annoying. What would be causing this noise?