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Question DetailsAsked on 5/9/2011

Low pressure in kitchen sink

About 2 months ago, I noticed that my water pressure in my kitchen sink has gotten low. Checked all hoses and faucets. Can't find anything. I have 3 bathrooms that are all working ok; however, I do on occasion hear something like air in the line. What do you think is the problem.

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I assume if you have a kitchen faucet filter that you have check if the filter needs changing.

Couple of likely possibilities, in what I consider most likely order, with most likely at #1:

1) diffuser/strainer on faucet plugged with grit or lime buildup - usually can just be unscrewed from up under the outlet of the faucet - has a screen inside. Unscrew and wash it out, then flush line for 1 minute. If lime buildup, use vinegar and old toothbrush to dissolve it.

2) if single-handle faucet, then one of the replaceable seals or gaskets inside has partly failed or folded over, or one of the springs is not working fully - again, disassembly and rebuild the faucet with a rebuild kit. Could affect only hot or cold or both, depending on what failed.

3) ditto to above if two-handle faucet, but in the faucet valve itself, which would have to be disassembled to clean it out - would only affect hot or cold unless a LOT of grit came through the line at one time and partly blocked both.

4) grit or buildup in the line broke free and jammed in the shutoff valve under the sink - would only affect hot or cold side - close valve and reopen it, will usually clear the blockage, though then it will lodge in the diffuser screen so you will have to remove that and clean it after flushing the line for a minute or so at full flow.

5) something was shoved in under the sink, kinking one of the water supply lines. If plastic can usually be straightened out OK, if copper and is kinked usually trying to straighten it will break it - presto - flooding.

Regardless of which it is, plumber can fix for about $100 plus or minus about $25 unless it requires trackingdown through several of the aboveto find the problem, then could be as much as $200.

Answered 5 years ago by LCD




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