My pump was running fine when the pool guy opened it a couple of weeks ago. The pressure was a little high, so I was going to backwash it. Then it suddenly stopped sucking. I called the pool guy, he came by and fixed it. I don't know what he did. It ran fine for a few days, then it stopped sucking again . I texted him three days ago, but he hasn't come by yet. I'm getting frustrated. I asked him what he did so I could do it, but he just said he'll stop by. I looked on the internet, but figured I'd ask you guys and gals.