I've searched the forum and found lots of discussions about this topic but none has led me to success. Sorry if I'm missing the salient point of these posts but let me say what's going on:
We had our pool resurfaced with pebble and some time after that was all started back up, I went to turn on the spa jets. Rather than getting air out the jets, we have water bubbling out the feeder tube. There was a drilled cap on the end so I'm pretty sure nothing crawled in there. But there was definitely debris in there, at least small stuff.
I tried two things:
1. Lowering the spa to below the jet level, turn off the pump, turn on the jandy valve to enable the spa jets and applied a shop vac (sucking) to the air feeder tube. I pulled lots of water through there, maybe 3-4gal. I wasn't sure if it would ever end so I just gave up.
2. Under normal operation, I turned on the spa jets and pushed air into the feeder tube from a smaller shop vac that has a high pressure side (mine doesn't). Again, nothing really happened here and after removing the air pressure, water pretty quickly mushroomed back over the top of the feeder tube (from which I have removed the protective cap).
I would estimate the run from the feeder tube to the jets is around 30-40 feet, but we do not have a blower. The spa jets have always worked, however.
The thing is, I'm really not clear of the arrangement of pipes that makes this work (the air tube) so I'm having trouble envisioning what's going on at any point in time. Is there a good diagram of how these things are hooked up? I have also recently removed an old, un-used gas heater as outlined in this post:
Removing unused gas heater
But I'm pretty sure the air jets were not working prior to that.