[David and Teresa]

Hi David,

Have you watched my latest video where I cover chasing down leaks in detail?
https://youtu.be/Auf0pzEPGfs?si=paeCfXLZewpfweo8

Your coach is older, but there are still the Usual Suspects I'd like to remind you of...that a lot of folks miss:

1. Your compressor CAN leak from the output fittings, but you'll only detect them when the compressor is RUNNING.

2. Check valves at the tanks can leak (backflow) and cause the compressor to continually cycle since the air is getting lost into the brake system (which notoriously leaks anyways but most don't care since the engine is running to constantly replenish that system.)

3. Modern coaches have an Air Doubler, in which many owners will forget to turn off. The ram-piston constantly works to create high pressure to the air reel and can be the culprit for VERY short cycles.

4. Your Parking Brake and Trailer Charge (Peterson) valves under the dash.

5. I would hope that 12v backup compressor is check-valved to prevent air being lost through it. So I wouldn't suspect it's the source of your leaks.

Once you get under your coach, you'll be able to check all the tanks.  I've found our coach has FIVE air tanks!!!!

Hope these help a bit.