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Kitchen faucet (two separate handles, pull-out hose, Price-Pfister Catalina model) is dripping from the faucet itself. I shut the water from below the sink, determined it's a cold water, unscrewed the handle, removed and replaced the cartridge. However. As soon as I screw the cartridge in place, water starts dripping (both cold and hot water is shut off). If I unscrew the cartridge, water stops dripping (and nothing comes out of cartridge hole, so I suppose under-sink shut-off is ok). I tried unscrewing the hot water handle, same behavior exactly.

Question: Why the water is dripping and how do I troubleshoot/fix it?

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up vote 6 down vote accepted

both or one of your shut off valves is not shutting off completely and has a small drip which builds up in the cartridge housing. the new cartridge fills that void up causing it to leak again.

This is the only logical explanation i can think of.

You didnt say if you replaced the cartridge with a new or seals. So if not the do so and it should stop leaking if you do it right.

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It was indeed not 100% complete shut off, my replacement cartridge was also leaking, apparently. Getting a second cartridge solved the leaking problem. Thanks. – haimg Oct 9 '11 at 0:13

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