rumbling noise in shower pipes and no hot water
I have this problem with my shower where every time I turn on the hot water, the pipes make a very loud rumbling sound and no hot water seems to come up the pipes. Cold water does work so I am not sure what the problem is.
This problem actually never occurred in the past, maybe for 16 years, and then back in 2005 or so, it started to have the rumbling noise but hot water would still come up.
Now no hot water comes up the pipes and there is a loud rumbling. Is there any way to fix this myself?
I'm not a plumber, but my best guess is that there is something wrong with the pressure in the system.
Any help will be appreciated.