PSI Loss

[jasonknox]

In the last week my PSI at the filter has dropped from 13psi to 9psi. I can only think of three things that my be the problem:
1. Gauge is bad
2. Pump is going bad
3. Blockage in pipe between skimmer and pump

Are these the only reasons or have I missed some?

Replacing the gauge is easy and cheap.
How can you tell if it is the pump or not?

 

[UnderWaterVanya]

In the last week my PSI at the filter has dropped from 13psi to 9psi. I can only think of three things that my be the problem:
1. Gauge is bad
2. Pump is going bad
3. Blockage in pipe between skimmer and pump

Are these the only reasons or have I missed some?

Replacing the gauge is easy and cheap.
How can you tell if it is the pump or not?

Any air in the basket?
I recently figured out that my suction side valves were not all the way open and before opening them I had minimal but not zero air in the basket. After opening them and getting rid of the air, my pressure jumped up 2.5 PSI.

 

[jasonknox]

There is no air in the basket and I actually checked it with all supply valves open (two skimmers, main drain, and dedicated vacuum line).

 

[Bama Rambler]

Partial clog in the pump impeller!

Have you checked to see if it clean?

 

[jasonknox]

Nope, I did not consider that but I will certainly check it. Thanks.