Had a problem like this. It turned out to be the shutoff valve I had on the hose for the black tank flusher. It was leaking, enough to fill the tank, but not loud enough to were you could hear it running.
__________________
2006 Montana 3650RK with Improvements.
2014 Ford 6.7L PSD 4WD CC LB Dually & Hadley's.
|