Should have asked this before DIY plumbing , plumbing is more complicated than just installing stuff and now you need some real pro help to get it right.

It’s not vented properly. DW-V. The V is what most get wrong. Bring in a licensed plumber.

When was the last time you had your septic tank emptied? We had gurgling when our septic was full.

I had a problem like that once and the plumber had said to change the fittings that went from the drain to the main line - they were not the Sani T fittings which give the water draining a direction to go so it doesn't back up into something else.

Also verify the pitch of the pipe - sometimes that is an issue...

I also had a vent issue but that caused my drains to be slow. They did make noise as well.

Hmmm I think someone needs to actually see what you h ave to really determine how to help. I know in my home I do have 2 vents for plumbing. One is in the kitchen and right there I have the sink,dw and laundry converging and it all runs about 15 ft to the main drain that drops to the septic , That drain is below the bathroom and there is a vent there as well.

Not sure if that helps... just some thoughts...

masterofdisaster2018

Patricia Colwell Consulting wasn't wrong. She may not have been tactful, but she's not wrong. Without an accurate diagram nobody can troubleshoot this.

The fact that you don't know what questions to ask, or even how to present this so that others might make heads-or-tails of it, says to us that you probably should have had a plumber do the work.

Pay a skilled plumber to re-do it. That's the best and correct advice in this case - even if you don't want to hear it.

good times this thread. ( that avatar though ):):)

In California, anyone performing plumbing work that costs over $500 needs to be licensed. To obtain a license, you need to first have four year's experience and then pass two exams. Which is to say that anything more complicated than changing out fixtures or repairing a toilet is best done by a licensed professional.

Well didn’t you just tell everyone how smart you are by posting a barely intelligible question with no diagram? And needing an answer that only a pro viewing your installation would know? Who needs a dumb old uneducated SC plumber, right? Smarht guyz kin red bOks n figgur it out! Way to go Derrick J Crocker! Except. You forgot. You don’t know the answer either, AND you’re got the advantage of standing right in front of the pipes, and YOU plumbed them wrong. Then you come on to tell us how dumb we are and how smart you are, again, with more unintelligible gibberish included as a bonus! You’ve hit the internet trifecta in posts. You win. U R smahrt!

Actual plumbers, and not "drain cleaners" do know plumbing code and how to properly vent things. You don't need an architect or an engineer for most residential plumbing work. You do need someone who knows code - at minimum. I've been the GC on a ton of residential gut jobs and never needed an engineer or architect - but I did need good trades people.

Again, you came here wasting everyone's time with an unintelligible question and nothing specific like a diagram. You got exactly the right answer - the first one right out of the gate. And then you want to insult us and be an ass.

Good luck with your plumbing job - because nobody wants to deal with your nonsense and your attitude.

It's the wrong size diagram.

Its the wrong drain size.

It's the wrong angle waste arm.

Its the wrong fitting.

It's the wrong venting.

It's the common denominator between all of those.

Sounds like air is being forced through water in your toilet drain trap.

So you think you know everything why are you asking .

Oh my goodness everybody! Deep breath in , hold and release..... again.......

I am so glad to see we can all get along......