Hit and miss syndrome could also just be debris hung up on the float.
True.
Any grease build up floating around in the pit?
Possibly a zip tie that holds float to a stand pipe broke?
Those floats are so often the culprit it's not funny, but sometimes it is.
The floats fool people, it's that black and white wire issue.
They know enough to go buy a new float and install it.
But they forget how it was wired.
So they go to their default electrical knowledge, black to the power and white to the neutral.
Well, first time the newly wired float 'makes' the breaker blows.
So they go out and buy a new pump and install it but the breaker still blows so they call a pro.
Two minutes on the job you see the problem and land the float wires in the proper locations and wa-la, everything works.
They gratefully stroke out that $129.00 service call check since their bathtub is no longer full of turds all the while swearing it'd been wired like that for years and worked.
Yeah, sure it has, $29.00 fix turned into a $500.00 DIY wonder.
