Pump not priming and surging

PoolGuy1327

Member
May 16, 2017
18
DFW, TX
My pump will not prime, but, is pulling some water in a surging motion. It does this with one, two or all three jandy suction valves open. This tells me it may not be a single suction line. Also, I re-lubed my o-ring on the pump with no fix.

I did allow my skimmer to get too full with leaves recently. When cleaning it out, some leaves got pulled into the suction line.

Although likely unrelated, my DE filter is dirty and was running at close to 30psi for a few days before this started.

Any ideas?
 

ajw22

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TFP Guide
Jul 21, 2013
10,847
Northern NJ
Try and snake through the skimmer line with a Drain King.



 

duraleigh

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Apr 1, 2007
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Sebring, Florida
If the "surging" is repetitive or at all rhythmic, it is a good indicator your pool water is too low allowing the skimmer to suck in air.
 

PoolGuy1327

Member
May 16, 2017
18
DFW, TX
That would be my first guess, but, there is plenty of water for the skimmer to draw. When the pump is running, i see water movement in the skimmer, but, its very weak when compared to normal operation.
 

PoolGuy1327

Member
May 16, 2017
18
DFW, TX
OK… Checked the impeller and I can make it move with my finger. I went ahead and used the drain king on the suction line from the skimmer and there are no blockages.

when I fired up the pump is still sucking water slowly but still surging. Any ideas?

I’ll also upload a video shortly for y’all to check out.
 

PoolGuy1327

Member
May 16, 2017
18
DFW, TX

Video of issue…
 

duraleigh

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Sure sounds like you are sucking in a TON of air......there has to be something wrong between the skimmer and the impeller. You read the article on suction side leaks, right?

Most common leak is the o-ring on the lid. Are the drain plugs tight on the pump body?
 

PoolGuy1327

Member
May 16, 2017
18
DFW, TX
Thank you for the input and yes I have read the article on suction side leaks.

my O-ring is pretty old and when I cleaned it before relubing today a lot of black came off of it so it may be to deteriorating. With that, I’ll pick up another one tomorrow and let y’all know if that does the trick.

I have a DE filter and one of my friends has a sand filter. He had a similar issue and it turned out his sand filter was extremely dirty. Is it possible that with my DE filter being at 30+ psi for a few days this could be the issue? I have not cleaned it yet.
 

PoolGuy1327

Member
May 16, 2017
18
DFW, TX
Typically a little under 20. I cannot backwash as there is not enough pressure to be effective.

Ill open it up tomorrow and clean the grids well and see how that goes.

Again, thanks to all for your input.
 

ajw22

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TFP Guide
Jul 21, 2013
10,847
Northern NJ
TFP recommends cleaning filters when filter pressure increases by 25% over clean pressure. My DE filter is about 18 clean and I backwash when it gets to around 28.

Being 30+ for you is too high.

You have a RECIRCULATE setting on your MPV? Set the MPV to RECIRCULATE. That takes the filter offline. See if your flow improves.
 

duraleigh

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Keep in mind you have a suction problem. The filter is on the pressure side and is unrelated to the symptoms you show in the video. If the pressure side is restricted, the result is HIGH pressure.....not the 3-7 lbs your gauge is showing.
 

wireform

Silver Supporter
In The Industry
Aug 15, 2017
496
Spring Valley, NY
No, that is the pressure side of the pump. But it may be leaking because you have to high of a psi reading meaning the pressure has no outlet and it will find other place to release.