Originally Posted by Motorhead-54
CautionÖdonít use much pressure if you are going to blow it out. You could easily blow a connection apart. I never use compressed air for that task. I always use that nylon HF snake.
I took your advice and used a nylon snake. I bought a 50' snake, thinking it should definitely do the job. I chose to run the snake from the bumper to the rear AC unit. At about 15 feet, I felt an obstruction and was able to push through. I used about 24 feet in total to get to the AC unit. So far, it seems to have solved my problem. Although currently in storage, I ran the rear AC for about an hour and noticed the rear tube starting to sweat water and no water from under the coach.