It is basically time to get a new faucet as us plumbers say !
This is what my faucet looks like:
I had it unhooked for a little while doing a remodel (worked fine for a few years). When I hooked it back up, water is dripping from inside the spout body (under the sink). Water drips down off of the rod to control the drain plug, but it is coming from up inside the faucet body. The parts diagram does not show any parts in there...
What is going on? Are there seals in there or did I pop a leak in the copper pipe?
The "guide tube" is cracked. Call 1-800-345-DELT, and they will send a new spout if it is still current, or a new faucet if they no longer have the parts or the new spout is incompatble with your handle connections.