Question about Intex 4000 GPH Filter Pump

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Is the intex 4000 pump any good.... do you lots filters...

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I have the new 4000GPH pump and its awesome! The pump itself needs modifying just a bit. As for your pool, get rid of the plunger valves. They restrict the flow by about 1000GPH or more. There is a plastic grate in the inlet side of the pump. I just took a small file and sharpened the leading and trailing edges to smooth things up. The biggest thing is with the plunger valves. I modified some PVC fittings so I can use 1.5 inch ball valves. When my pump starts up, you see the water moving. I no longer have problems with **** settling to the bottom of my pool. Oh, and it will run an automatic cleaner with ease.
I dont recommend using the 400GPH pump with hoses smaller than 1.5 inches as there will be too much pressure and is likely to cause problems.

Posted on Mar 11, 2009

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My 18' round intex pool pump wasn't working well after 3 yrs, so I bought the 4000 gph pump. When I first start it, it takes off like a rocket and water comes out strong, but shortly after barely any water comes out. Any clue whats wrong?

Posted on Jun 24, 2011

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How do you shut your water flow off to change the filter?

Posted on Jul 01, 2010

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We just bought the 4000 gal/hr Intex pump to replace the smaller one that came with our pool. It had lots of power and good water flow for an hour or so, then started decreasing steadily. It seems to have...


I suspect that debris may have clogged the new pump. the only solution is to open the pump chamber and inspect. Flushing does not work.
You may need to repeat this process several times until you get the pool clear. Be sure to utilize any pre filter strainers that you have.

Jun 09, 2011 | Intex 4000 GPH Filter Pump

1 Answer

The intex fp621 4000 pool pump does not seem to be filtering the water. the water comes in and right back out but filter doesnt even get dirty and water seems to go in dirty and come right back out dirty....


Try making sure filter is installed correctly. Push filter down onto foot ring. Install cartridge support on top of filter with gasket into filter and fingers up. If filter is not seated on top and bottom, debris in water will flow around the filter instead of being trapped in it.

Jun 13, 2010 | Intex 4000 GPH Filter Pump

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I have an Intex Ellipse 24x12 pool. I just got an Intex 4000 FIlter Pump and it shoots out the skimmer into the air. I can't get it to work correctly. What should I do?


MAKE SURE YOUR SUCTION HOSE IS GOING TO THE PUMP INLET ON THE FRONT SIDE OF THE MOTOR ON THE PUMP. YOUR DISCHARGE SIDE WILL BE ON THE BOTTOM OF THE FILTER SIDE OF THE PUMP. IT SOUNDDS AS SIMPLE AS YOU MIGHT HAVE THE HOSES REVERSED.

May 29, 2010 | Intex 4000 GPH Filter Pump

1 Answer

What size hose can I use when vacuuming the pool If I use a Intex 4000 gallon pump on my 18' x 48" pool?


you can use the standard 2" hose. i would get one atleast 20-25 feet long though

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1 Answer

Where can I get a new motor for an Intex pump model 637 or 12R


first off water should not be getting to the armature area. be carefull with how you are taking care of your pump.
secondly a 1500 gallon pump is very weak I would advise at least 2500 or even the intex 4000
the most important part of pool maintenance is circulation.

if you have time check into electric motor rebuilding in your area
but sometimes that is more expensive than buying new

also if you have a valid receipt and the pump is less than 90 days old call intex and they will send out a new one within 24 hours
good luck

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check the intex site for adapters and other parts you might need.
I don't think you should buy new pool .

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