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Old 07-15-2011, 09:07 AM   #1
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"monster in the toilet"


whenever we flush our upstairs toilet - after about 5 seconds it makes this low moaning sound - our kids now call it the monster in the toilet. It's not a banging or clanking but a low "moaning" noise. A friend said that it may be air in the line. Any suggestions on how to make the "monster" go away!?!

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Old 07-15-2011, 09:13 AM   #2
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"monster in the toilet"


Have the parts inside the tank ever been replaced? Might be a fill valve.

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Old 07-15-2011, 09:44 AM   #3
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"monster in the toilet"


not that I am aware of - we bought the house 3 years ago and for all I know the toilet is as old as the house which would make it 13 years old
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Old 07-15-2011, 09:53 AM   #4
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"monster in the toilet"


Take the cover off of the closet, and see if you hear anything there, but I would be more inclined to suspect that it has to do with the way that the waste line is supported within the framing of the house; something like perhaps a strap that is installed at a slight angle, so that as the weight transfers the pipe is sliding on the strap.
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Old 07-15-2011, 10:29 AM   #5
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"monster in the toilet"


I'll go with Alen on this one, the fill valve is either not opening all the way or is not seating quite right when near full. This could easily cause a groaning sound when the rubber valve seat vibrates with water going through it.

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Old 07-15-2011, 09:19 PM   #6
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"monster in the toilet"


Quote:
Originally Posted by DexterII View Post
Take the cover off of the closet, and see if you hear anything there, but I would be more inclined to suspect that it has to do with the way that the waste line is supported within the framing of the house; something like perhaps a strap that is installed at a slight angle, so that as the weight transfers the pipe is sliding on the strap.
Not that this is completely off-base, but it is definitely far less likely, and a fill valve is a much easier and cheaper option.

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