How to Fix a Dishwasher/Sink that ISN'T Draining
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- Опубликовано: 8 фев 2025
- Hey gang! Welcome back to another video, today is a bit of a different project. Today we tackle a dishwasher and sink that won't drain properly! There could be a lot of different reason as to why yours won't drain, but it's most likely bad plumbing! In this video we can really show what a difference having good pipes makes!
These guys did a great job. I just want to mention for anyone coming across this video that, if the disposal ever clogs and fills up, the waste water will go back through the drain hose and fill up the dishwasher. An air gap is important to prevent that. Even if the plumbing code doesn't require an air gap in your area, it's good practice to form a loop in the drain hose and secure the top of the loop to the under side of the sink so it sits above the outlet in the disposal. That way the water won't go into the dishwasher unless it almost completely fills up the sink.
Yep, always a great idea! Thx 50skid 👍
I still don’t understand why local cities don’t require back-flow prevention on residential houses. They are required on every single commercial property for landscape, domestic, fire lines external by the meter and internal on every “hazard” or “potential hazard” . Yet I can almost guarantee that every house hold is far more dangerous to our city’s water as a lot of humans are gross , 99.9% of humans can’t figure out how to screw in a light bulb let alone try and explain the hazards of back siphonage and the potential problems there creating in the house if there water gets back fed into the city’s water. A simple Reduced pressure back-flow on every house main , and laws for commercial appliances such as fridges and such to come with built in air gaps , or DC or whatever protection they can would drastically protect all of our water we all use ...
You can also put a non return ( 1 way ) valve at the disposal to avoid water going into the dishwasher. Some dishwashers already have one but it's quite rare so I'd say better safe than sorry.
That,s the first thing I noticed that there's no high loop, anywho, if you're ever in a situation where they're using an air gap, if it ever and causes water to come out of the air gap, run a 3-foot coaxial through the air gap by removing the chrome cap cover, remove the cover to access the drain tube, through there run the coaxial cable down then pull it out through the garbage disposal side, just reach inside the garbage disposal from the g/d drain side and pull the coaxial cable up and out of the drain and that will clear your drain. Then replace the air gap cover and chrome cap and you're back in business
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Wow, watching this video four years later I can really see how much you guys have progressed! Still my favorite dynamic duo on RUclips! 👍🏼
I came across this video 2 years ago on how to install a dishwasher and haven't stopped watching them! Still haven't installed the dishwasher but still watching these guys! Lol
I love you! Trying to install a dishwasher that wouldn't drain. I was all ready to go to the store and get new pipes and wanted to watch a video about how to do it correctly. I saw the part where you "put in the screw driver, hit it with a hammer, and take the plug out." Suddenly, it's fixed. The dishwasher works, all is good with the world. Thank you so much.
Our pleasure! Good for you for fixing that 👍
I bought a new disposal - water was pooling in dishwasher - came here and learned about a knockout lol! Thank you!
It is amazing that when I have a question about what you are doing, your son will ask you why you are doing what you are doing. Great teamwork.
Thank you, SO MUCH!! After taking apart the whole dishwasher, I checked the garbage disposal and found that the little circle piece hadn’t been knocked out by the guy that installed the dishwasher. Thank you for sharing your knowledge with us. I successfully completed my first plumbing job. 😃 👍
Awesome!! Glad we could help GZ👍
I'm a appliance servicing electrician in Aus, I've lost count how many times plumbers or apprentice forgot to drilled out a hole or drilled to small and cause a clogged after and month of use.
I was searching YT for the same issue lol - fortunately it coincided with installing a new disposal so I knew the issue was there. Who knew there was a knockout!
Glad I found this. Usually, I call a plumber but I'm wanting to see if I can fix it myself. The kitchen sink has been slow to drain for a while and I sometimes have to run water through the disposal to get the regular sink to drain. This will usually 'unclog' the drain for a couple of days. I've noticed that it 'gurgles' and an air bubble comes up the regular sink side, after which the sink will drain. Additionally, nasty water has now backed up into the dishwasher. The information and clear demonstration presented here will definitely be my guide.
Loved your video. when I had problems I replaced everything. I should say I had my 17-year-old replace everything. O.J.T, "On the Job Training". I thought that why not train my Son on how to do it. I learned by trial and error. Anyway, He replaced the Garbage disposal and all of the plumbing. Plus we removed the Air Vent, Soap dispenser assembly from the sink and plugged the holes at the top with Stainless plugs. Then I had him replace the entire faucet. We installed a Single valve facet with the extendible/retractable spout. Kids are not shown how to work on things nowadays. They need to be taught to work on things around the house. After all, once they have their own place they'll have knowledge of what to do. Love your videos. Very entertaining and informative.
Thx Jerry 👊👍
Nice of you all to upload the video. Always a great sound to hear that drain working and find out you dont have to get under the house or tear a wall out.
Thank you, Guys! Best vid of them all! I’ve gone through 5 videos and not one mentioned breaking out the plug in the disposal drain inlet. I’ve been flooding for a week, tried everything and pulling my hair out. Come to find out, a hammer and screw driver breaks that seal. You saved me $$ because I almost called for backup
Very very nice. I have worked on about a dozen homes throughout life but I couldn’t remember all the pieces names. Not only did he explain everything, but he named the pieces and the typical sizes. Really helps. Great teacher. Has patience in doing so. I’m sure frustration kicks in from time to time but we sure need these guys because they speak from experience and wisdom. Great work. Excellent video taking.
I’m pretty new to the Stud Pack family so I’ve missed out on quite a few vids, but I’m catching up. I wish RUclips and Stud Pack had been around back when I owned a house. It would have been quite helpful. I’m currently in a condo and don’t plan on doing reno any time soon. I just thoroughly enjoy watching you guys and the fine craftsmanship. And Paul, I must say, you and I are a lot alike in that we’re meticulous to a fault. It’s a curse sometimes. Just wanted to say one thing about this plumbing vid. I’d heard that when you have a garbage disposal, you’re supposed to have a diverter, as opposed to a regular ‘T’ so that it doesn’t back up in the other sink. Thanx!
Watching this old video really makes you realize the production value of the newer videos. Jordan is doing a great job.
Guys did a good job on that sink nice way to demonstrate that it can be a Diyer. And by letting them know take a picture the best way to show what you have at the house instead of trying to explain one person sees one picture and you're telling another good job Paul and Jordan keep recording I'm going to keep watching God bless you guys
Since you are not running an air break, the drain hose from the dishwasher should have a high rise loop. Basically the hose entering into the sink cabinet should loop up to the bottom of the countertop and then come down to the connector at the disposal.
This video is very useful. Step by step narration helps. It is down right educational in fixing drain clogs from DW or Sink. Great job.
I appreciate this video. It was simply explained and the information provided, including pricing, tips, etc is really helpful.
Love seeing how they started 4 years ago. Subscribe and watch them every week now.
I LOVE this channel!
Not only is it fun to watch all the changes & progress being made, but they take the time to TEACH us viewers WHAT it is they're doing and WHY they're doing it the way they are.
Just 1 observation you might want to add to the video, manufacturers of dishwashers recommend that you make a high loop for the dishwasher drain hose to prevent the food residue from clogging up the one way valve on the d/w. A hint I found out after reading the install instructions when I got a mildew-like smell from my new dishwasher.
I need to try this. I'm having issues like this.
The high loop is a must have. Great observation.
Clockwise drainage is correct for your hemisphere. Nicely done lads.
Okay I just bought your cool beanie! I have a family snowboarding trip planned with my wife and four kids at the end of the month. Early birthday presents for me. You guys are awesome. I really enjoy watching your channel. I dont even need a beanie...just wanted to support a great father and son team. Love you guys!
Much appreciated Keith 👍💪
You need either an air gap or at least a high loop on the dishwasher drain hose. If that sink backs up it will fill the dishwasher with nasty water!
That was my question , another youtuber said , hose should be above the disposals connector… know I know why . Thxs
Good video as always! The premise for the connection of the dishwasher to the disposal, initially, was to chop up any large food particles that made it out of the dishwasher.
With better tech in the dishwashers nowadays, it is almost not necessary, but I will install the connection given the chance. With an air gap or high point in the hose.
Now why on earth didn’t I go to your channel first instead of searching all of RUclips? I should have known you already had a video to show what I needed.😊
Next time!
after watching your explaination on the farm sink your now working on and you mentioned how "dry" you were on a previous video, i went looking for it, lol sorry. But really its fine, yes it might not be as exciting as you are today, but then this is a fix and not a big remodel. And still your thinking ahead in purchases and planning. Great job guys.
Thx SC 👍💪
Drain looks good. The main reason your dishwasher is draining back into itself is cuz the hose is on the bottom of a floor.( that's why we drill two holes in the cabinet) The one on the top for the drain hose & one on the bottom for the water & electric. And dont forget 2 make a loop. 2nd trick is to put a small piece of copper in the hose before you tighten down the hose clamps.
Thx Matthew 👍
Yeah, hose should be elevated above the disposal. If you are doing dishes and the disposal gets backed-up, the water will bypass to the dishwasher.
I’m guessing the hose was installed that way because the DW isn’t next to the sink like it should be. The hose probably goes under the corner cabinet. That’s what happens in older homes where a DW is installed after the kitchen is built. 🤨
One of best self shows on RUclips
Thx billy 👊
You are doing God's work..thanks for explaining everything so well
Very informative step by step and explaining each part of the step. You are a great teacher. Your technique, I want to learn more! 😁
Really appreciate that David 👊
CLASSIC HOMEOWNER....
Yeah I'm just gonna be defrosting some dinner hope that's not in your way 🤣
The drain hose from the dishwasher should loop high up in the cabinet and down before being attached to the disposal.
DEBUR ALL CUTS YOU MAKE ON THE PIPES!
Great video!
You did a awesome job! But you need a high point in the dishwasher drain hose under the sink. The dishwasher pump runs about 20 seconds so when it’s done if there is water left in the hose it will flow back into the dishwasher.
Such a great channel. Super knowledgeable guys that work hard and get things done. It’s like I feel like I get the satisfaction of fixing stuff yet I’m just watching it on RUclips. Always appreciate the great explanation. .
Thx Mark 👍💪
very nice. Roger wakefield has a very nice demonstration as well. he uses a drop 90 on his disposal and avoids the long run towards p trap.
Never thought to use the vibrating tool to cut pipe. Nice. Thanks for the videos.
Excellent video!! Just what I needed to know what parts to buy. Thank you!
Thank you very much you solved my problem dishwasher won't drain. Never knew you had to remove plug in garbage disposal.
Cool thx 👍👊
It's amazing that people somehow have the idea that dishwashing powder corrodes disposal blades, when the manufacturers build a drainage port right into the system. People wash their metal pots, flatware and knives in the dishwasher for -years- decades with little to no trouble with corrosion. The dishwasher effluent is more likely to _clean_ the blades off than damage those.
I'm glad you now know, and that someone has a widely viewed video showing a great underutilised feature.
Heads up ive installed hundreds of pea traps. I do not know if its a manufacture issue but ive noriced. A inconsistency where i will install them and a week later i get a service call cause the pea trap is leaking so i started using teflon tap and it has saved. Me alot of time. I can not seem to pinpoint why sone of them leak while others dont. Its fairly simple. And for how many of them that started to leak a week after installation i feel as if its a manufacture defect. Just a heads uo to. Residential plumbers that are fairly new overall this guy. Is very knowledgeable. Everything he pointed out in video is spot on u have to be careful with these D.I.Y. videos always watch more then one and mabey. Do some research. Oni ternet before u dive in head first
I've been plumbing for a long time and you did a great job
My my, look how far you guys have come.
LOL...love how someone just went and painted up the interior of the cabinet and sprayed everything including the dishwasher hose
Just a quick note, you guys done a great job and video, I'll would of added c clips to the hose and have it neatly against the wall and out the way, Most of the time when you open the door, it looks like a bomb gone off, shopping bags everywhere. So many of the same cleaning products and every bloody thing that could not fit in the other draws lol
@Johnt T take a look at IKEA's bathroom sink drains. Pipes are all pushed to the back wall to make space for drawers.
Ok, I’m going to give it a go. I’ve fixed a few things around the house, so though this is a bit intimidating, I think I’m a handy girl. Here goes!
Since that horizontal pipe is level, how do you keep waste from the disposal from accumulating there? Sometimes people don't thoroughly flush water and waste when using the disposal. Or they turn it on and off really quick, and just walk away.
I really enjoy the videos. I have learned so much watching. Thank you and keep it up.
I have found that the real test is to fill the sink with a stopper in there, then pull the stopper and let it drain all at once. You will see connections leak that wouldn't with just running water, but will with the huge inrush. Not everyone fills their sink like that but some people do. Good to know either way though. (which you did 30 seconds later haha)
Nice job. The high water loop is essential on the washing machine drain to the disposal.
Don’t forget the air gap ! The last 3 calls I’ve had that were dishwashers not draining properly were because the drain line was full of back flow from the garage disposal. No air gap ! That makes your dishwasher full of bacteria
Yes this setup had no air gap, oops
Great work! And I must give a shout out to whoever loves the Cafe Bustelo! It is the best coffee on Earth
Lavazza
Thank you for sharing this Important Do it Yourself (DIY) project.
Well done.,
Awsome, im a Handyman, in SC,, and i love your style of video,, i love how you get right to the point, and your video camara is good 2, but the MAN,, knows his stuff and if he's unsure he'll find out,,, much lOve,, i want to do the same,, bro,,, peace out ,, God Bless
Last time I replaced the drain pipe under my sink I too just used a regular Tee. Every time the disposal would run, it shot up into the other sink half. Using a Tee with a baffle to divert that flow downward solves that. That however was a pain to source and I had to order online. Wish the big hardware stores actually carried them in my area.
Great video Paul I really enjoy the way you take to time to explain why and how you are repairing the plumbing. Paul if they purchased a disposer with a stainless steel smashing drum that would eliminate any problem with the galvanized coating wearing off. I experienced that problem so I swapped out the disposer with one that had a stainless steel smashing drum. 1 1/2 years later no odor and with 1 1/4 HP the disposer never clogs. Also it is vital to create a high loop with the dishwasher drain to avoid backup of the dirty water. One last thing most codes require a GFCI outlet under the kitchen sink. Was that an oversight by the homeowner?
Thx Ernest 👍👊. Yeah the stainless steel is my preference to but sometimes owners opt for cheaper version. High loop got it. GFCI at dishwasher is 2020 NEC. This house is way older 👍. Landlord can upgrade if he wants to
You are a GREAT instructor! Thank you for all you do!
I like to give the horizontal pipe from the disposal a bit of a slope to the trap.
I need to replace my sink, I’m hoping this video will help. 🙏🏼 thank you for this
Nope might find another video with more detail.
Hi!
Awesome job! 👍
I'm having the same problem but my disposal is on the opposite side!
Also, water collect in the bottom of my dishwasher, when I'm not even using it!
It's so weird!
Does this guy make house call in Minnesota?🤔
Nice video. Should raise the hose going from the disposal to the dishwasher above the disposal connection. This creates an uphill, high loop, and prevents dirty water and debris from spitting out of the disposal, then running directly downhill into the dishwasher, clogging valves, and such.
I remove my plug with 90 degree pliers. Great job and good video.
Boy y’all have come a long way
This is a really great video now I would guess so my scenario is my dishwasher without a dishwasher was broken so it had a new one is it would never dry the dishes were always wet and with the new dishwasher it’s the same thing so would that be because the dishwasher is not draining properly you think and when I looked under my sink the plumbing looks so much more complicated than that so just a quick question
I laughed at the reveal of the 80/20 ground beef that had been sitting in that sink the whole time. THE WHOLE TIME!
Thanks for the visual. Looks pretty simple!
great video thanks. i have a problem with the side sink where i put clean dishes when i don't use dishwasher, everyone I turn on thefood disposal all smelly gunk comes out and fast on the side sink where i have clean dishes drying, I've tired a few things but the problem still there. I've used small sink plunger , I have used drano to see if it dissolves any and I have even taken trap pipes under out to clear them of any debris or any clogged pipes and no results . Can you tell me what else could it be .? Im trying to stay away from plumber ,thanks so much and keep up those good videos coming.
Thx Alex. Where the two sinks connect together, that fitting is a tee. There should be a baffle inside to prevent your problem. Check out Keeney #125AWK
You can see the baffle in the old tee at 10:19
Can I please have a list of the names of all pipes and slip joints. I have been having trouble connecting a double sink with a garbage disposer and you seem to have solveed my conundrum. Thank you in advance.
It's absolutely crazy what some people will do with plumbing.
WE use abs is that plastic pro or crap ? I learned 2 good helps thank you .
The contractor that did two of our bathrooms last year installed those flexible pipes. I knew from watching these videos that they were bad, and they argued that it was “convenient and good enough.” The plumbers they hired also did illegal work on a sewer line, so the clean out had an incorrect fitting (a T instead of a 45 degree pipe pointing toward the street). Our basement flooded afterwards, and they had to hydro-jet our sewer due to us thinking it was clogged. The jet tool went toward our house due to the incorrect fitting, breaking the toilet. Apparently, that whole sewer line was installed so long ago that the city did not even know where it went, and it had also collapsed, hence the flood. (It was an old clay line from 1909 or before.) It cut across 3 of our neighbors driveways without connecting to any of their houses, before probably connecting to the main line at the intersection. They are abandoning that line now, and installing a new sewer line under our house straight out to the street. They are also redoing all of the old cast iron under our house, because it has bowed so much that parts of it are actually at an incline! According to the city, there is another sewer line out of our house, but it does not seem like it is even hooked into our house at all, and there are questions of whether it even exists!
The house was previously bought and flipped in 2002. The people who flipped it were obviously not really fit for the job: there were empty beer cans behind our drywall when the crew we hired demoed the bathrooms last year. We also remodeled another bathroom in 2019, (not from the same contractors, and that one was quality work, not unlike the work I see on this channel.) In that bathroom, there was a malt liquor bottle under our bathtub!
I've always taped the threads. Good to see that isn't needed.
Yes the dishwasher discharge needs to be as high as you can get it. I have to raise it up in about every other sink I get under. I have seen many kitchen floors flooded because the sink will not drain and water goes out into the dishwasher and all over the floor
Be careful about extending the trap too far into the wall, it may block the tee in the wall.
Where is the diverter? I live on the west coast and have always seen the dishwasher water drain into a diverter (I think it is called that) mounted on the sink's back flange, and a flex pipe feeds drain water to the disposal. The diverter provides an air brake to prevent contaminated disposal water from seeping back into the dishwasher. When a broken plastic fork tang or crud from the dishwasher becomes trapped in the diverter, the dishwasher won't drain.
Yeah it’s called an air gap. Not required where we live. I hate them 😡👊
Question: That horizontal piece from the disposer outlet to the drain, should I angle it down so it's on a decline?
Yes 👍
So are we just going to ignore "disposAL"? 😂😂😂 JK guys. Your videos are awesome! Keep em coming
You guys are the pros great great job
Does the disposal outlet have to be even with or higher than the drain connection in the wall?
If the disposal outlet is lower than the wall drain connection, will there be standing water in the disposal from the p-trap? Thx,
Just wondering why you need that coupler to connect the hose to the disposer ?
The coupler is used to reduce the diameter , but you cut that part anyway... (smile..)
I connected the hose directly .... works fine...
Great job, easy to understand and follow along with.Thanks
Thx Mike👍
I have a question. I have exact same setup. Dishwasher on the left, then garbage disposer on the left sink, and the strainer on the right sink. When there is water in the left sink, and I run the garbage disposer, the water shoots out of the strainer on the right sink, almost a foot high. And the plumbing always make that gurgling sound when water runs down the drain. Looking under the sinks, it is a clutter of pipes. Can it be simplified, and stop the "old faithful".
For the water test: 1st briefly run a little through each sink bowl, then run the dishwasher, and last mostly fill at least the disposal sink bowl then release water with disposal running. The last step is the only way to fully test seals under the sink. It fills all the tube under the sink with maximum pressure and vibration during the test. Many skip or miss this step of leak testing.
As for hand in the disposal, the blades aren't sharp but will easily remove flesh. Fortunately they are at the very bottom of the unit. Reduce chances of injury by at least turning off power at switch, if not breaker; or preferably discount power to it by unplugging or undo wire nuts.
Solid tips. Agreed. 😅I was so appreciating this video. But the explanation at the end that “there are ‘blades’ in there, but all they do is sling food to the side” totally threw me. Wth
Thank you so much for this video I had the same issue and I did directley the 3rd solution and it fixed now
That’s great work. Too bad you guys didn’t start the roast in the crockpot before you left.
Great tutorial guys!!
Great job Stud where did you get that 6"
tailpiece
Anytime you run a dishwasher to a disposal I recommend having an air gap so you don't get buildup in your dishwasher drain hose.
Tysm 🥰 😊
You guys were such a GREAT help to me. A life saver indeed. I appreciate this video tysm again. God bless. 😇
Thx Lisa 👍
What about your air gap for the dishwasher line???
Not required where we live 👍
Really….okay
Another great instructional video. Thanks!
This is an incredibly informative video. I've been through this so many times. My first problem was not noticing there was two separate sections on that pipe wall. One for kitchen. One for bath. I have various extra parts around so when I'd buy the wrong kit I could rig it together. I stumbled on to the separate sections one day and only because I bought the parts at a Walmart this time. They were clearly marked. You covered all that. You covered the bevel washers. The metal pipe in disposal and the connections everywhere. Excellent video. I do have a question though. The dishwasher there doesn't seem to have that backflow drain at the top but mine does but my sink is stainless no hole pre cut. So that drain is right next to sink in counter top. Lately it isn't drain into the sink and its ruinibg the counter top. I have the drain hose hooked to garbage disposal. Do I need that other drain up there? I'm getting counter damage fast. I have cleared dishwasher drain it has pressure. I just know drilling stainless gives me a headache. Dont want to do it because then I have a hole in a formica counter to fix. Can I cap that thing off or what?
Go to your local hardware or big box store and get a stepper bit, (cone shaped drill bit). It will do a very clean hole in any stainless sink. I install r/o systems so I know the first one is scary, my first was a high end elkay but Jesus was with me and it came out perfect. It is almost addicting, just put an overflow in my new stainless washtub. :)
My dishwasher started leaking tonight because the damn kitchen sink drain clogged up. The dishwasher filled up with water and started leaking. The thing is is my drain dont come out of the wall. It comes out of the floor under the sink. Do I still need a p-trap before it goes into the floor ? Or is it ok to not have one ?
How about metal ptrap? Is there a problem with the rubber washer if there is a little leak coming from top nut? Thanks
Only thing is say is to put the high loop in that drain hose to help stop back flow. There may be one behind the cabinets though.
Is it safe to remove the DW hose into the disposal and put a snake in to clear the pipes ? The clog is behind the disposal. The flanges are locked . This video makes more sense. I'll watch again.
Hi, when I run my dishwasher and use the reverse osmosis water filter system at the kitchen sink- the water tastes strange. I think when the dishwasher starts, some contaminated water goes to the filter system. Is that a common problem?
Newer dishwashers have a built-in check valve on the drain side and don't need an air gap. Just loop the drain above to underside of sink and fasten. I would put a stiffener in the black drain hose where it is connected by the gray coupling to the disposer. Slip joint plumbing is for home owners and no real plumber I know use the stuff...they use schedule 40 dvw pvc. If done right the first time it lasts for many years trouble free and is easy to service and repair later.
My Dad and Grandfather were plumbers back in the 30’s, 40’s, and 50’s. Can’t imagine what they’d think about plastic pipe.
I don’t think connecting to disposal is allowed in some states. Illinois doesn’t allow it. I’m struggling with old galvanized drain pipe in the wall that is pretty high up and trying to decide if it’s worth it to even keep the disposal. I think it’s caused me issues with the drain pipes being so old. Rumor has it plumbers (ok the plumber I use) hate disposals lol.
Great video!
Ours is built the same as this one
Problem is when disposal is ran is blows water up at that T connector and into the non disposal sink
Why is that?
You didn't test the running of the disposal
Why?