plumbingtoiletwashing-machine
Whenever I use my washer, the toilet makes a gurgling noise and then over overflows. I have to turn the washer off until the water in the toilet recedes. I have noticed this during the spin cycle. It has been doing this for about a week or so.
What could be the problem?
Because you mentioned the load size switch, it sounds as if it has issues detecting the empty tub when set to a minimum change level (small load); this may indicate a blockage of some sort.
There is a thin 1/4 inch tube that runs from near the bottom of the tub up to the water level switch inside the console. Disconnect and blow the gunk out of that tube. You will need to get inside the console and the front of the machine must be removed to do this. Use a putty knife to the front, then unscrew the console.
If you had mentioned the speed switch making a difference, it would be the motor/transmission or something stuck slowing down the assembly.
You have a crack somewhere in the drainage system. The most likely reason that it's leaking on the spin cycle is the vibration caused by the spin cycle is opening the crack to let the leaking occur.
Best Answer
There is a partial blockage in a pipe common to both the washer and toilet. With the blockage, the path of least resistance is out of the toilet, so that's where the water goes. This blockage needs to be cleared.
Often, gurgling is a sign of faulty drain venting. In your case, I hope it's just incidental to water working it's way back up to the toilet, and not an actual vent issue.