Forums | Home Repair | Home Improvement | Painting | Interior Decorating | Remodeling | Landscaping


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 02-07-2011, 11:21 AM   #1
Member
 
Join Date: Jan 2010
Location: CA
Posts: 47
Share |
Default

Kitchen Island sink odor


I have a foul odor that appears to be coming from my island sink area in the kitchen. The island has a dishwasher and a large, single sink with a disposer. The island also has a small vent with a metal top in the countertop near the faucet. The odor only appears in the kitchen, all other sinks are odorless.

The sink drains free, as does the dishwasher.

How does this small surface vent work? Could it be plugged up? Should I run some baking soda and vinegar down the sink? Should I pull & clean the sink trap?
SixStrRzr is offline   Reply With Quote
Old 02-07-2011, 06:11 PM   #2
call me E
 
TheEplumber's Avatar
 
Join Date: Jul 2010
Location: Idaho
Posts: 6,172
Default

Kitchen Island sink odor


The air gap (or vent as you're calling it) on the counter top is for the dishwasher. Should be nothing wrong with it. How is the sink vented inside the island? Is there a loop vent or a auto air vent? If there is an AAV, It may have failed and is allowing sewer gas into the cabinet.
TheEplumber is online now   Reply With Quote
The Following User Says Thank You to TheEplumber For This Useful Post:
plumberinlaw (02-08-2011)
Old 02-08-2011, 08:12 AM   #3
Member
 
Join Date: Jan 2010
Location: CA
Posts: 47
Default

Kitchen Island sink odor


Quote:
Originally Posted by TheEplumber View Post
The air gap (or vent as you're calling it) on the counter top is for the dishwasher. Should be nothing wrong with it. How is the sink vented inside the island? Is there a loop vent or a auto air vent? If there is an AAV, It may have failed and is allowing sewer gas into the cabinet.
It must be an AAV,as there's no top vent to the roof. Where is the AAV located?
SixStrRzr is offline   Reply With Quote
Old 02-08-2011, 08:15 AM   #4
Experienced
 
Jackofall1's Avatar
 
Join Date: Dec 2010
Location: Southern Michigan
Posts: 2,822
Default

Kitchen Island sink odor


An AAV should be accessable, so I would think it would be under the counter near the sink.

Mark
__________________
When its all said and done there is usually more said than done
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Jackofall1 is offline   Reply With Quote
Old 02-08-2011, 03:03 PM   #5
Member
 
Join Date: Jan 2010
Location: CA
Posts: 47
Default

Kitchen Island sink odor


Where are AAV's available? I checked the Big Box stores, none have them. Maybe a specialty plumbing store?
SixStrRzr is offline   Reply With Quote
Old 02-08-2011, 03:29 PM   #6
Member
 
Homerepairguy's Avatar
 
Join Date: Aug 2010
Posts: 735
Default

Kitchen Island sink odor


Quote:
Originally Posted by TheEplumber View Post
How is the sink vented inside the island? Is there a loop vent or a auto air vent? If there is an AAV, It may have failed and is allowing sewer gas into the cabinet.
How does an AAV actually work to allow air into the drain but not air out from the drain? Just trying to understand the concept.

Thanks,
HRG
Homerepairguy is offline   Reply With Quote
Old 02-08-2011, 04:08 PM   #7
Member
 
Join Date: Aug 2010
Posts: 1,526
Default

Kitchen Island sink odor


HRG,

Here's a link to a video, http://www.youtube.com/watch?v=o44-NqTtYpc. Good stuff starts at about 1:30 mark.
VIPlumber is offline   Reply With Quote
Old 02-09-2011, 01:25 AM   #8
Member
 
Homerepairguy's Avatar
 
Join Date: Aug 2010
Posts: 735
Default

Kitchen Island sink odor


Quote:
Originally Posted by VIPlumber View Post
HRG,
Here's a link to a video, http://www.youtube.com/watch?v=o44-NqTtYpc. Good stuff starts at about 1:30 mark.
Thanks for that link. Understand how it works now.

HRG
Homerepairguy is offline   Reply With Quote
Old 02-09-2011, 10:23 PM   #9
Newbie
 
Join Date: Feb 2011
Posts: 5
Default

Kitchen Island sink odor


My kitchen sink is in the middle of an island. There is a vent pipe under the sink between the trap and cabinet.It up again but not back in the sink or drain, but since it happened, we had an odor for sink.We have not done anything else to sink or plumbing.
___________________
Kitchen Renovation



Last edited by andrugargy; 02-10-2011 at 01:10 AM. Reason: Removed ad link in post body
andrugargy is offline   Reply With Quote
Old 02-10-2011, 11:09 AM   #10
Member
 
Join Date: Jan 2010
Location: CA
Posts: 47
Default

Kitchen Island sink odor


Quote:
Originally Posted by Jackofall1 View Post
An AAV should be accessable, so I would think it would be under the counter near the sink.

Mark
I took a cursory look under my sink, and there's no AAV that I can see. Disposal, u-trap, no vent to roof (it's a sink island), slab foundation, 10-y/o house.

Is there a possibility that the AAV (or somethink that acts like an AAV) is located in the dishwasher vent, located next to the faucets? The dishwasher vent has a metal pop-off cover, and also has a plastic piece in the top that pops out, but I'm not sure what this piece does.

We've been in this house for 1 1/2 years, and the odor has only been prevalent in the last month or so.
SixStrRzr is offline   Reply With Quote
Old 02-10-2011, 01:35 PM   #11
Member
 
Homerepairguy's Avatar
 
Join Date: Aug 2010
Posts: 735
Default

Kitchen Island sink odor


Quote:
Originally Posted by SixStrRzr View Post
I took a cursory look under my sink, and there's no AAV that I can see. Disposal, u-trap, no vent to roof (it's a sink island), slab foundation, 10-y/o house.

Is there a possibility that the AAV (or somethink that acts like an AAV) is located in the dishwasher vent, located next to the faucets? The dishwasher vent has a metal pop-off cover, and also has a plastic piece in the top that pops out, but I'm not sure what this piece does.

We've been in this house for 1 1/2 years, and the odor has only been prevalent in the last month or so.
The dishwasher vent (air gap) next to the faucets should come "before" the disposal and P trap and prevents water from the disposal from being siphoned back toward your dishwasher. An AAV (or vent to the roof which you don't have) comes "after" the P trap and prevents siphoning the water out of the P trap along with better drain flow.

If all you have is the dishwasher vent and it is hooked up "before" your disposal/P-trap with no AAV, then I wonder if the water in your P trap is being siphoned out, allowing sewer gas to emanate from your drains and dishwasher vent? Verify that the water in the P trap is always high enough to seal any back feed of air from the sewer.

If your P trap is "always" filled with enough water, then the odor must be coming from the tubing that connects your dishwasher to your garbage disposal or from the garbage disposal itself.

$.02,
HRG

Last edited by Homerepairguy; 02-10-2011 at 01:52 PM. Reason: realized that the OP does have a disposal.
Homerepairguy is offline   Reply With Quote
Old 02-10-2011, 05:56 PM   #12
Member
 
Join Date: Jan 2010
Location: CA
Posts: 47
Default

Kitchen Island sink odor


I'l have to look closer at the routing - How would water be siphoned out of the P-trap? Negative pressue on the outflow side of the P-trap?

How could that be possible?

I'll look when I get home.

Quote:
Originally Posted by Homerepairguy View Post
The dishwasher vent (air gap) next to the faucets should come "before" the disposal and P trap and prevents water from the disposal from being siphoned back toward your dishwasher. An AAV (or vent to the roof which you don't have) comes "after" the P trap and prevents siphoning the water out of the P trap along with better drain flow.

If all you have is the dishwasher vent and it is hooked up "before" your disposal/P-trap with no AAV, then I wonder if the water in your P trap is being siphoned out, allowing sewer gas to emanate from your drains and dishwasher vent? Verify that the water in the P trap is always high enough to seal any back feed of air from the sewer.

If your P trap is "always" filled with enough water, then the odor must be coming from the tubing that connects your dishwasher to your garbage disposal or from the garbage disposal itself.

$.02,
HRG
SixStrRzr is offline   Reply With Quote
Old 02-10-2011, 06:45 PM   #13
Member
 
Homerepairguy's Avatar
 
Join Date: Aug 2010
Posts: 735
Default

Kitchen Island sink odor


Quote:
Originally Posted by SixStrRzr View Post
How would water be siphoned out of the P-trap? Negative pressue on the outflow side of the P-trap?
How could that be possible?
With no allowance for air inlet venting "after" the P trap within a distance required by code, the P trap becomes part of the siphon path. See "Venting and auxilary devices" in this link for a wikipedia explanation:

http://en.wikipedia.org/wiki/Trap_%28plumbing%29

HRG
Homerepairguy is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
help! bring my kitchen together NewlywedKristin Interior Decorating 10 10-26-2011 01:08 PM
kitchen design: should we remove inner wall(s)? ilyaz Kitchen & Bath Remodeling 4 10-26-2010 07:59 AM
Kitchen Sink Moved - new kitchen sleepysmurf Plumbing 1 08-10-2010 06:38 AM
removing load-bearing walls and moving the kitchen WannaReno Remodeling 2 04-02-2010 05:05 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.