Polaris booster pump not priming

[DallasSocFan]

Strange one for me. My (old) Polaris 280 booster pump isn’t priming.

If I turn it on, I get no pressure at the 280.

But, if I pull off the hose for the top discharge outlet, and turn the pump on, it will throw water about 6 feet up in the air or so. Then if I reconnect hose and turn it on the Polaris starts back up just fine.

I don’t want to have to do the geyser method every day on a schedule, so any help is appreciated.

 

[ajw22]

Post pics of your equipment pad and your booster pump and hoses.

There any kinks in the booster hoses?

Does your main pump turn off at night?

I think when your pump turns off you get air into the booster pump lines. There may be a kink in the line or the interior of a hose may be worn.