Pump making loud humming but not moving water

John Faulkner

John Faulkner

Member
Went out this morning and noticed my pump is just humming really loud but not actually pushing any water. I already checked the basket, nothing blocking it. Any idea if this is something simple or if my motor is shot?
 
Could be a seized impeller or bad capacitor. Try spinning the impeller by hand (with power OFF!) to see if it’s stuck. Capacitor is usually a cheap fix.
 
If it’s humming but no flow, don’t let it run like that too long it can burn out the motor quick. Sometimes a clogged impeller hides deeper inside, not just at the basket.
 
I had the same issue last year. Replaced the start capacitor for $20 and it worked like new. If you’re not handy, a pool tech can swap it in 15 mins.
 
I’d kill power first, then you try spinning the impeller by hand. If it turns freely, replace the start capacitor; if it’s stiff, clear the jam. Don’t let it hum long or you’ll burn the motor.
 
I’ve had my pump do that loud humming but no water movement. The impeller was stuck. I killed the power, spun the impeller by hand, and once it moved freely I replaced the capacitor. Pump ran like normal again.
 
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