When flushed they are stacked.
I took a hose on the roof of my two story house but ran into a stoppage app 10 feet down . It feels like a bend in the pupe rather than a. Lo kage but I cannot tell.
Beaides the gent pipes what elsecould it be?
I replaced the refill valve in one toiletbut that didn't work
Any ideas?
Thanks

Do you get the noise when the toilet is flushing or when the tank is refilling?

When refilling

Noise will be from vibrating washer somewhere. Could be fill valve but more likely to be in the stop valve. Replace stop valves, probably will be the stop valve lower floor. To test, turn off stop valve lower floor and flush upper toilet.
If not successful look for stop valve on cold water pipe to bathrooms.

Noise will be from vibrating washer somewhere. Could be fill valve but more likely to be in the stop valve. Replace stop valves, probably will be the stop valve lower floor. To test, turn off stop valve lower floor and flush upper toilet.
Thank you so if the lower shut off valve is bad the upper toilet would wlso howl when refilling?

Noise will be from vibrating washer somewhere. Could be fill valve but more likely to be in the stop valve. Replace stop valves, probably will be the stop valve lower floor. To test, turn off stop valve lower floor and flush upper toilet.
If not successful look for stop valve on cold water pipe to bathrooms.

I tested both stop valves and it still humms on both floors
All I see is the hoyse shut off valve outside could there be more shut off valves to the cold water someqhere?

What happens if you turn on a faucet while the toilet is refilling?

What happens if you turn on a faucet while the toilet is refilling?

It gets louder

At the main shut off valve, feel the pipe while the toilet is filling and the faucet is open. Do you have a pressure reducing valve.

At the main shut off valve, feel the pipe while the toilet is filling and the faucet is open. Do you have a pressure reducing valve.

I don't know what a prv looks like

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No I don't see one

Do you feel vibration on the pipe at the main shut off valve while the toilet is filling and the faucet is opening (when the howling is loudest)?

Do you feel vibration on the pipe at the main shut off valve while the toilet is filling and the faucet is opening (when the howling is loudest)?

Ill have to check in the am its outside and dirt is all around the gate valve I will have to dig and expise the galve and pipe more

If it's a gate valve it won't be that. Gate valves do not have washers. Do you get any noise when using hot water?

If it's a gate valve it won't be that. Gate valves do not have washers. Do you get any noise when using hot water?

No

Somewhere in the cold water line there must be a stop valve.
Set up the howling and start feeling the pipes for vibration. Sound travels everywhere. The greater the vibration you feel the closer you are to the source.

Somewhere in the cold water line there must be a stop valve.
Set up the howling and start feeling the pipes for vibration. Sound travels everywhere. The greater the vibration you feel the closer you are to the source.

Maybe the valve for the washing machine but that's a gate valve looking shut off

Be very unusual to have a gate valve for a washer. Could you mean a 1/4 turn valve?

Be very unusual to have a gate valve for a washer.
Ok ill test it