~Barn~ wrote:Checking for disconnected or chewed hoses is one thing.
I was gonna suggest checking for critter-damage if it was parked somewhere with exterior access... During the last cold spell last week, a rat or squirrel climbed up through the main sewer line and got stuck some 5 feet beneath my shower/toilet drain, I could hear it struggling to get free but it was far enough that I couldn't see it... it was stuck there for 4 days before it finally freed itself and went back out the sewer... either way hope you get it figured out