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How can you tell if you have a clogged drain or if your pipes and not vented properly?

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We have  a house built in the 20s with no sump pump just floor drains.  I just put in a power flush toilet and now the drains are backing up.  When we do laundry in the basement, the drain for the sink in the kitchen on the main floor gurgles.  

It also gurgles when we run the dishwasher.  I ran a power rodder and got some tree roots and the water went down two days later it is backed up again.  Do you think it could be a ventilation problem or should I try to re-rod it.
asked in Plumbing by brian (120 points)
edited by darekrudy
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1 Answer

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Hi Brian,

It’s an older home and its plumbing / drain lines may not have capacity (or might be partially contaminated) to handle high pressure / large volume of water pumped into them from the toilet or from the washing machine.

If you have clay pipes underground (or any type of aged waste line) they might be deteriorated to the point where power rodding clears the path for a short period of time only. If the pipes (or their section) are heavily deteriorated and roots have penetrated your drain lines you might need to repeat rodding process on regular basis or replace that compromised section.

Water backing up from the drains is usually a sign of a clogged waste line and not a plumbing vent problem. Depending on the design of this old plumbing system flooded pipes might be blocking vents and cause gurgling noises.

You might want to hire a plumber with a camera to check the condition of your drain lines and decide further action after that. 

Just click "comment" below to ask additional plumbing questions.

Thanks.

answered by darekrudy (21,730 points)
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