Need some advice from an experenced plumber.

[Colorado_Outback]

We recently bought a house in Springs, the problem is with the kitchen sink. When you turn the water on full it starts to back up into the sink after about 2-3min. I borrowed a 25ft sink snake from my dad and snaked it out the other day and it still has the same problem.

Someone redid the plumbing under there fairly recently and the first thing I noticed was a vent cap thing plumbed in. Its the black line behind the white trap.


Here is what it looks like below the floor, the line gets a lot bigger just behind the wall.


My guess is that its improperly vented, but I just dont know enough about plumbing.

Can anyone point me in the right direction?

[tmleadr03]

Contact EvilRhino. He is an excellent plumber and honest to boot.

[BPTactical]

Not a plumber but have done a good bit of it. Logic would dictate that the vent MUST be higher than the bottom of the sink. It seems that the water will run fine until the level of it in the drainpipe approaches the vent height, then it slows down.
Just a guess.
If you want both of my BIL's are drain cleaners. PM me your contact info and I will have the BIL give you a call.

[JohnTRourke]

25' probably isn't long enough
2 to 3 minutes probably gets to the plug and then it probably stops

have it professionally roto-rooted

you'll have to start there anyway. (or start from that access plug in the bottom (at the 45) and go there, that should gain you 5 to 10 feet or so.

[Colorado_Outback]

The vent is way up between the sinks, as high as it could be.

Ill move all that stuff and snake it from the bottom plug, 25ft from there should put me well into the alley.

[StagLefty]

Just my .02 but I think your on the right track by starting at that bottom plug. You'll also be able to determine where the obstruction might be from that point. Good Luck

[Colorado_Outback]

Well the baby took a decent nap so I got some time to snake it out from the bottom plug, pushed the snake almost 20 ft witch should put me way off my property.
Didnt get much out of the trap, but the death smell..

It bubbles occasionally when its attempting to drain so im still thinking improper vent action.

Gonna try and do some detective work and try to find the original vent stack in the kitchen.

Thanks for the reply's!

[JohnTRourke]

is it an old house? (1970's or earlier)

[cofi]

is it an old house? (1970's or earlier)

i think his house was built in the 40s

[JohnTRourke]

built in the 40's? then it's clay tiles from the house to the street.

they break up and stop the drain from moving
Get a rotorooter/drain guy with a video camera set up (most of them have it now, about $150-$200) and have them video it and see if the clay tiles are all busted up.

any low spots in the yard where the sewer line runs?

is it only the sink that runs slow or does everything in the house run slow?