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Retrieve Clog and Test Flush — Final Flush and Test

Intermediate6 hours

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How to Clear a Clogged Plumbing Vent Stack · Step 5 of 5

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In this video

Once you feel the auger has hooked or broken through the clog, slowly retract the cable by pulling the auger straight back out of the toilet. In the video, a cloth that was causing the blockage is successfully retrieved. After removing the tool, flush the toilet to test if the drain is clear. The water should drain quickly and completely.

Goal: Clear Obstruction and Verify

Used in this video

  • Toilet auger (brand: DrainX, Auger Head Type: Bulb head)Retrieving the clog from the drain
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Drainx

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FAQs

What are the most common signs that my plumbing vent stack is clogged, and not just a regular drain?

Common signs include multiple slow drains throughout your home, gurgling sounds from various drains or toilets, or a persistent sewer gas odor. If these symptoms appear in several fixtures simultaneously, it's a strong indicator of a main vent stack blockage rather than a localized drain issue.

How do I safely access my roof to clear the vent stack, especially if I'm not comfortable with heights?

Always use a sturdy extension ladder, like the XTEND+CLIMB 760P+, ensuring it's on level ground and secured. Wear slip-resistant shoes (e.g., Shoes For Crews) and consider having a spotter to stabilize the ladder. If you're genuinely uncomfortable or inexperienced with roof work, it's safer to call a professional.

What if my garden hose isn't long enough or powerful enough to clear the blockage in the vent stack?

If a standard hose like the GardenJoy 5/8 in. x 50 ft. doesn't reach or clear the clog, consider using a longer, more flexible hose like the Pocket Hose Silver Bullet 100 ft., which is designed to be kink-free. You might also need to use the drain auger (THEWORKS 3/8 in. x 25 ft.) as the next step for more stubborn blockages.

What should I do if the drain auger gets stuck in the vent pipe during the clearing process?

If the auger gets stuck, try gently rotating it counter-clockwise while pulling back to disengage it from the blockage or a pipe joint. Avoid excessive force, as this could damage the pipe or the auger itself. If it remains firmly stuck, do not force it; you may need to call a professional.