Hmmm...air leak.

[dhirocz]

Well that got my attention. Yes I have an AD-IS dryer. As a matter of fact, I had to replace the entire assembly last year when a buddy of mine and I ended up ripping the threads off of it entirely when removing the filter. I doubt it was ever changed before I got it...the wet tank was very...well...wet.

Didn't help that at some point in time the truck lost it's main driveshaft and apparently took out the tank. It was replaced, and the new one was tilted away from the drain instead of towards it. I still remember the rusty water and muck that was in that tank I had to flush out as a result of that. Now I'm wondering if this is related?

Still did the same thing before the change compared to now, only difference is the system stays dry and it actually purges now.

Are those valves cleanable/user serviceable? I'm about to go dig the old one out of my scrap pile and take a quick look when I get home. My dryer is under the cab.