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Thread: Small suction side leak, cannot locate

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    Small suction side leak, cannot locate

    So, I still must have a small suction side leak. Everything runs well, but there is still a small amount of air getting into the system, and it gets worse when a few leaves get into the skimmer basket. So... all of my fittings, hose clamps, etc look fine.

    I'm thinking that the o-ring on the pump basket lid could need replacing. It was new as of July, but I have taken the lid on and off numerous (and I mean numerous!) times this year. Could that have caused it to degrade enough to require replacing again?

    I cranked on the pump basket drain plug and it is pretty tight... unless this is a part that requires teflon tape???

    Any other ideas? It is a minor problem, but now that my major problems have been solved, I can focus on the minor ones and I just have not been able to solve this one.
    Dedicated TFPer since 2012 with recommended test kit
    Above ground, 30 foot round pool, 21,000 gallons
    Hayward 150 sq foot cartridge filter, 1HP Waterway pump
    Raypak 400K BTU NG Heater!
    Installed in 2006? (just a guess, pool came with house I purchased in June 2012)

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    Mod Squad JohnT's Avatar
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    Re: Small suction side leak, cannot locate

    A 2HP pump on an AG pool may have trouble drawing enough water. Does your skimmer stay full with no vortex?
    TFP Moderator
    20K Gallon 20X36 Vinyl Inground
    Hayward S244T Sand Filter with 1HP Whisperflo Pump. Liquidator C-201 and Solar Heat

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    Re: Small suction side leak, cannot locate

    Yeah, no issues with that, it stays very full. I had a vortex issue a few months ago, but then I figured out there was supposed to be a door on the skimmer and that solved that.
    Dedicated TFPer since 2012 with recommended test kit
    Above ground, 30 foot round pool, 21,000 gallons
    Hayward 150 sq foot cartridge filter, 1HP Waterway pump
    Raypak 400K BTU NG Heater!
    Installed in 2006? (just a guess, pool came with house I purchased in June 2012)

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    msgtdan's Avatar
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    Re: Small suction side leak, cannot locate

    Pauls,

    I've got a similar problem, I've already tried a new lid o-ring. Mine sucks a little air until I hook up the vacuum and then within about a minute I've got no flow and the pump wet end is empty. I've tried pouring water around the hoses, the lid and the junction to the pump. But I haven't tried it with the vacuum attached yet which is my next step. If you find it post and I'll check mine for the problem. If I find mine I'll pass it on.
    Dan D
    Used 2003 Aqua Leader 27'x52", 17,800 w/10" hopper, SwimPro SW256T 250# sand filter, Hayward PowerFlo LX pump 1hp impellor, Emerson 1 1/2 hp motor, setup Aug 2012 Summer 2011 used Summer Escapes Ring pool 14' x 42", Intex 1600gph sand filter, HTH 6 way test kitTF-100 w/stirrer, Well water @ FC=0, PH=7.2, TA=290, CH=320

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    UnderWaterVanya's Avatar
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    Re: Small suction side leak, cannot locate

    Quote Originally Posted by msgtdan
    Pauls,

    I've got a similar problem, I've already tried a new lid o-ring. Mine sucks a little air until I hook up the vacuum and then within about a minute I've got no flow and the pump wet end is empty. I've tried pouring water around the hoses, the lid and the junction to the pump. But I haven't tried it with the vacuum attached yet which is my next step. If you find it post and I'll check mine for the problem. If I find mine I'll pass it on.
    I helped a friend seal his pipe joints with electrical tape when we could not locate the source. If we had been more carful we could have determined which joint was the main problem simply by watching the basket while taping.
    Inlaws Pool Boy since June 14th 2012, Pool built ~ 2003, In-Ground, 16'x32'
    13500 gal, Vinyl Liner, Fiberglass Slide, TF-100 Test Kit, Hayward 210T
    sand filter, A.O. Smith 1.5HP main pump motor (C48L2N134C1),
    Hayward SuperPump (model ?), Polaris 380 & PB4 Booster Pump

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    Re: Small suction side leak, cannot locate

    Dan,

    Will do.

    Underwatervanya - that's a good idea. I have two 6 foot or so flex hoses that are joined together on the suction side, but overlap on the joining piece is pretty good and the hose clamp is as tight as I can get it. I think I will try taping each connection (skimmer, joint, and into the pump) indiviudally and see if that helps ID the problem.

    If not, then is it safe to say it must be either the lid o-ring or the drain plug on the pump basket?
    Dedicated TFPer since 2012 with recommended test kit
    Above ground, 30 foot round pool, 21,000 gallons
    Hayward 150 sq foot cartridge filter, 1HP Waterway pump
    Raypak 400K BTU NG Heater!
    Installed in 2006? (just a guess, pool came with house I purchased in June 2012)

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    msgtdan's Avatar
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    Re: Small suction side leak, cannot locate

    I did more investigating last night, I'm going to redo the pipe sealant at the pump intake hose adapter. It's original to when I got the pool and there's silicone sealant around it so somebody else thought it was a problem and the sealant peeled off pretty easily. While cupping my hand under it and pouring water around it seemed to be a little better. Didn't have time to try the vacuum as I got home late.
    Dan D
    Used 2003 Aqua Leader 27'x52", 17,800 w/10" hopper, SwimPro SW256T 250# sand filter, Hayward PowerFlo LX pump 1hp impellor, Emerson 1 1/2 hp motor, setup Aug 2012 Summer 2011 used Summer Escapes Ring pool 14' x 42", Intex 1600gph sand filter, HTH 6 way test kitTF-100 w/stirrer, Well water @ FC=0, PH=7.2, TA=290, CH=320

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    msgtdan's Avatar
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    Re: Small suction side leak, cannot locate

    Used teflon tape and pipe sealant on the intake adapter and sealant on the drain plug. I can now vacuum the pool, still have air in the basket so I'll do some more looking.
    Dan D
    Used 2003 Aqua Leader 27'x52", 17,800 w/10" hopper, SwimPro SW256T 250# sand filter, Hayward PowerFlo LX pump 1hp impellor, Emerson 1 1/2 hp motor, setup Aug 2012 Summer 2011 used Summer Escapes Ring pool 14' x 42", Intex 1600gph sand filter, HTH 6 way test kitTF-100 w/stirrer, Well water @ FC=0, PH=7.2, TA=290, CH=320

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