Thor Forums

[FW28z]

I sometimes have that same banging noise in my lines - also in the shower. The banging only occurs when shutting off any water line, but not when the pump is running.

But then I got to thinking... (which is sometimes dangerous).

I found that my antifreeze port cap was only semi-tight, which means I might have been getting air into the lines. And I am thinking that perhaps my banging is possibly due to that.

Thing is, I didn't have any problems with the shower banging until we hooked up to city water at a campground. Then it started the next time we used the pump.

The hook up to city water might be simply coincidental, but something definitely changed.

Is that change perhaps the antifreeze port cap becoming loose?

I'm going to fix that problem and try it again next season to see if the banging has gone away.