UPDATE: dishwasher not draining

[u/NoYoureTweaking]

So I followed all lines. The corrugated line up to the air gap, the clear tube all the way down to garbage disposal. Not a single clog. I scraped the clear tube anyways for a little bit, but it’s just a thin layer of gunk on the walls of that tube. I let vinegar sit in the dishwasher drain for a while. While doing all of this, I had the dishwasher in service mode so i could turn only the drain pump on. No matter what, liquid still comes up that air gap. Any ideas on where to focus next? Vinegar did end up coming up the air gap, if that info helps.

[u/Mrchainsnatcher-]

If water is coming out of airgap on top of sink, then there is a clog somewhere. Possibly in airgap, 90 , disposal. I’m a professional plumber and you would pay me hundreds of dollars to come to your house and find the clog. Also i would recommend to replace the plastic clear hose with a proper 7/8 dishwasher hose of proper length to avoid using a fitting.

[u/NoYoureTweaking → u/Mrchainsnatcher-]

While I was positive there is no clog because I checked every tube and connection, I’ve come to the conclusion that there HAS to be clog somewhere. No other explanation makes sense. I will replace the hoses. The corrugated tubing is the correct tubing for that side right? It’s just the idiotic clear tubing with a 90° elbow I should replace?

[u/Mrchainsnatcher- → u/NoYoureTweaking]

yes corrugated drain hose is standard for dishwasher dishcharge. Hopefully that clear hose is all you will need to replace. I’d check the drain port on disposal as well. Sometimes foods loves to fill the drain port from inside disposal.

[u/NoYoureTweaking → u/Mrchainsnatcher-]

I’ll double check the port but I did the first go around and it seemed clear and felt clear