I installed my new 1 HP, 2-speed pump this weekend. When I tried to prime it, I got alomst no flow. My pool is in bad shape since it has been sitting for awhile. The steps I have taken thus far are:
1. Filled the suction lines with a hose until the water stopped running out of the basket into the suction lines.
2. Tried to prime the pump with the skimmer valve closed and main drain open, then vice-versa.
3. Verified the pump is running in high speed.
4. I haven't found any air leaks around the suction side union or the basket lid.
I noticed that when I cut the pump off, the water in the return line immediately off the pump flows back into the basket. I'm wondering if my filter is so nasty that it is dead-heading my pump, but that seems a bit far-fetched. I'm thinking my next step is to try to water jet the suction lines (at leaset the skimmer line since it's easily accessible) and make sure it's clear. I want to make clear that I'm getting no water flow or surge into the basket like one might see with a suction side joint air leak. Any ideas?