toilet issues

[Stormin Mormon]

That's brilliant, to use electrical fish tape. I'd not thought of that.

[Roger Shoaf]

I would think perhaps not.

This way anything that might dribble down the front of the bowl does not seep under via capillary action.

YMMV

[jeff_wisnia]

I've just got to restate that correctly.

In a traditional toilet the water in the tank flows through those internal passages and out through the rim holes to make the flush.

The thing you called a "dip tube" is properly called an "overflow tube" because it saves you from a flood from an overfilled tank should the float operated tank valve ever fail to close.

The "small line" that goes into the overflow tube continues to add water to the bowl through the internal passages and rim holes during the period after the flap valve closes while the tank is filling to insure the bowl refills enough to close off the syphon passage and prevent the possibility of sewer gas backing up through it. That "small line" is referred to as the "refill tube".

Jeff