Hi all,

I'm having a problem with the cold water pressure in my bathtub and toilet. The hot water works great, however. There's a sink in the bathroom as well, and there's no problem there. No problems with the other two sinks/toilet on the other floors of the house.

I installed a new faucet on the tub and a new valve on the toilet. Though I didn't do this specifically to solve the low cold water pressure issue, I thought it would help. But I still have the same problem so it doesn't look like it's in the faucet. I'm not sure but it seems like the water flow into the bathroom goes in the order sink>>toilet>>tub so since the sink works fine the issue's probably between sink and toilet. Would flushing out the lines work in this case? How should I go about diagnosing and fixing this? Thanks!!