Air Gap Leaking Water When Dishwasher Runs 

Glad it was helpful!

Thanks for watching.. see my answer on your other question.

As long as you have a clear path from the airgap into the disposal, you shouldn't have anything coming out of the air gap, unless there's something lodged in the air ga which is preventing the water to get past the air gap. Look down into the air gap and see if you can spot any blockage.. you can use a pair of needlenose pliers and pull the center piece up and out of the air gap to clean it out. If you still have issues you may want to change out the air gap. Good luck and post the results.

Hate it when tilers lay tile up to the dishwasher, instead of removing it to do it right. Have had numerous instances like this.. some times we've been able to lift the countertop slightly.. other times we've had to remove some floor tiles and then retile it afterwards. The issue you have with the end missing off the drain hose to your dishwasher is fixable. If you are near a Home Depot or Lowes you can pick up a new end connector (Home Depot SKU# 688045). You may need a stiffener in the drain line to keep it from collapsing when you tighten the connector. You should be able to find a barbed connector there that will slip into the drain hose and the rubber end to provide the support needed. If they don't have one you can just get a piece of pipe that will fit inside the drain line, cut a piece about 2" long to act as the connecting support. Hope this helps. Good luck with your projects and thanks for watching.

The blockage causing water to drain out your air gap typically isn't caused by "crud" coming from your dishwasher. It's normally from food particles and other stuff that you place in your garbage disposal, if your dishwasher drain dumps into your disposal (as opposed to a nipple directly on the sinks drain pipe). Stuff you put in your disposal will clog up the nipple on the disposal, which in turn prevents the dishwasher from draining, therefore you get the drainage out of the air gap. That's why it's a good practice to run your dishwasher frequently, so it can push all that crud out of the disposal before it becomes a blockage. I'm the same, it's just me and I don't generate a lot of dirty dishes to run the dishwasher very often but I do it anyway at least once a week just to keep the lines clear. also water that sits in the drain line gets nasty and smelly when it sits too long, so running your dishwasher through a short cycle on hot water setting is a good practice to keep bacteria and smells out of your drain line. I go through my cabinets and put dishware/.glasses in there that don't get used very often that accumulate dust. Lets me run the dishwasher and keeps all my dishes and glassware sparkling clean. If you don't have anything to wash placing a shallow bowl on the top rack with some vinegar in it and running the washer through a short cycle is another way to keep everything clean and sanitized. Hope this helps. Good luck with your projects.

Did you check the nipple on the garbage disposal (or the drain pipe if you don't have a disposal), where the discharge hose connects, to make sure it's clear? The reason you're getting the discharge out of the air gap is because of a blockage between the air gap and the point of exit. Also, if you've changed out your disposal and forgot to knock out the plug inside the nipple, then the water draining from the dishwasher has no where to go but out the air gap. Also make sure the discharge hose isn't kinked shut if it has to bend to reach the nipple.. Comment below and let me know what you find out. Good luck with your project.

Same. It's power spraying out the air gap. Brand new dishwasher and brand new air gap, no disposal. I'm frustrated but think my drain line is my issue. The fat black hose is too collapsible and is kinking up at the connectors. I used a different tube and it's too small I think.

It can go on either side. Some manufacturers state to put it above the countertop, some say to put it below. I prefer to install it below and put a small bead of silicone under the nut on top, that will prevent any chance of water leaking into the cabinet below. Thanks for the comment.

@@thewoggerswaydiy I actually use this same method and it works better because the air gap has a tendency to want to unscrew itself but with the added silicone, it affixes semi permenantly

As a homeowner I'd say go ahead and clean out the existing air gap if it's not too clogged. As a service provider we replace them for a couple reasons.. 1) It's faster which means less labor time for the client.. 2) A new one ensures it's clean instead of maybe not cleaning the existing one out thoroughly and having a call back to redo it, which costs us money. Thanks for the comment and for watching. Good luck with your projects.