Bathroom waterlines plugged

[J-Rhett]

I searched a lot of content and couldn't find anything like this.  Do I have a plugged water line?  Kitchen faucet and outside shower work great on fresh water and on city water.   But the bathroom sink and toilet have barely a dribble.  Before we went out to camp the water system was ok.  After traveling just 20 miles or so the bathroom water doesn't work.  I found plastic shavings a couple of years ago in the toilet inlet filter.  I haven't checked it but that wouldn't plug the sink too.  The plastic came from when they post drilled the tank a few year ago I think.  I really don't want to make a trip to Hohenwald and back as it's about 760 miles round trip and diesel is hehehe.  I know not much about how to clean water lines inside the double hull.  How do I attack this problem?  Hints?  I won't be camping anymore this year anyway.  Rhett & Dory Hull #186 2017

[jd1923]

4 hours ago, J-Rhett said:

But the bathroom sink and toilet have barely a dribble.  Before we went out to camp the water system was ok.

Is the hot water also blocked at the bathroom sink? (They are separate lines.) If cold only, there is one line that feeds the bathroom (see plumbing schematic).

What I would do first is blow air through all of your lines. I do this to winterize. Air will empty the lines and perhaps could move an obstruction. I made this tool to connect to the City Water inlet. You'll need a decent air compressor with good air volume. Set compressor pressure to 50 PSI which is your water pump pressure.

Given it's both the toilet and bathroom faucet, it cannot be the toilet filter or the faucet restrictor. If air does not help, you could try it in the reverse direction. Take off the faucet head and with another attachment blow air from the bathroom faucet back.

Hope this helps! Best wishes, JD

Edited 35 minutes ago by jd1923