Air leak?

[Barry J]

I have an above ground pool , just started up for the season. I have excessive back pressure coming thru skimmer after I shut off filter. A couple of things are happening. One is my suction hose broke last year, the only extra hose I had was a 1 1/4 size. The old one was a 1 1/2 hose. (i have one ordered and coming in ) but in the mean time have to run the pool. Will that smaller diameter hose from skimmer to pump cause air to come into the system? Or should I look elsewhere. There are air bubbles coming from return after running for awhile. Another thing is a drip coming from the pump drain hole when pump shut off. I bought a new plug with “O” ring and replaced but still drips. I tried loosening it , tightening it, teflon tape, lubrication, everything.
Almost ready to apply some sealant to plug and call it a day, sense I never use it. Could that be my problem or should I just try to change that skimmer to pump hose back to 1 1/2 ?? Also, before anybody ask, it is an above ground, with the system set up below the water line.
Thanks for any help
Barry

 

[Texas Splash]

If the hose is in good shape, I don't see how that would be the issue. But that leaking plug certainly could be.

 

[duraleigh]

I have excessive back pressure coming thru skimmer after I shut off filter.

Do you mean water and/or air goes out of the skimmer and back to the pool when you shut off the pump?

 

[Barry J]

The back pressure is air coming up thru skimmer, being release from the filter

 

[duraleigh]

For that to occur, you must be pushing air into the filter when the pump is running. That pressurizes the filter and that air forces the water backwards thru the pump and out the skimmer when the pump turns off.. Find that suction side leak (there's an article in Pool School) and that problem will go away.

 

[Barry J]

Actually found that the pump has a hairline crack in a crease that is very hard to find and is right above the drain , so looks like a new pump for me,, shame, just 4 years old