Trying to jetter slow draining kitchen sink

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ljbrandt

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At my wits end with this kitchen sink drain...pretty sure it is grease build up

Through the stub out under the sink I've tried:
Lye
drain bladder, AND ALSO used a 2nd drain bladder through the roof vent (yes I double blasted to get pressure, that was fun coordinating two garden hoses)
jetter hose with gas pressure washer

Nothing has worked to completely remove the blockage. At best I can use the faucet at 3/4 flow without it backing up but full flow eventually backs up after a couple minutes. Do enzymatic FOG (fat/oil/grease) cleaners work, like Bio-clean or Zep drain defense?

I thought the 50ft jetter hose with a 3200psi pressure washer would be the ticket, but after only 20-25ft I cannot feed it any more. Here's what happens....

As I fed the first 0-15ft of the jetter hose, I got a lot of water and air shooting back out through the 1.5" wall stub. Then at 20-25 feet I hit an obstruction and the air/water backflow stops coming out of the stub. At this point I cannot feed the hose in any further but I also cannot pull it back out, that is until I release the pressure washer trigger, then the hose can freely be pulled back-but not forward. The other strange thing is that when the jetter gets stuck at the 25ft mark, I start getting water spray coming out of the roof vent, but the vent wye/junction is only 2-3 feet past my point of entry at the stub...why would air/water shoot out through the stub at first and then the vent when I hit an obstruction?

Grateful for any help, thanks

P.S. - there's no cleanout I could find for this kitchen drain, which is why I went through the stub.
 

Reach4

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I presume there is no basement. How about a crawl space?
 

Reach4

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I am surprised also that the water shot out the roof vent, but not out of the kitchen drain port.

I wonder if Clog Hog https://www.cloghog.com/ would do it for you.

If you have straight access thru the roof vent, that sounds good.
 

Reach4

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OK. The most common place for kitchen drain line clogs is where the pipe switches from vertical to horizontal. So maybe concentrate the jetting to that area -- just a few feet down.

The clog hog might be passing thru the grease, etc, making a small hole. Take the time to let the side jets do their things.
 

ljbrandt

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OK. The most common place for kitchen drain line clogs is where the pipe switches from vertical to horizontal. So maybe concentrate the jetting to that area -- just a few feet down.

The clog hog might be passing thru the grease, etc, making a small hole. Take the time to let the side jets do their things.
I'll try that, thanks. But I wonder what the impediment is about 25ft in. Also, are these enzyme drain cleaners worth a shot?
 

WorthFlorida

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Are the pipes PVC or galvanized? It sounds like after you broke through, it might be a collapsed pipe. The clog hog works quite well and not being able to pull it back after what seems like a clog, indicates to me is solid material. Any drain waste would eventually dissolve and break up.


I've used a clog hog to clear a drain that was plugged up for years. After many attempts using an auger I gave up. The clog hog jetter did the trick but what happened was it bore a hole through the clog. Using a string and lots more work, the clog finally broke into pieces. It was dried detergents mixed with sand. I caught the pieces at an outside clean out.
 
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