I just replaced countertops and I'm in process of installing both the galley and lavatory sinks.
In order to connect the drain to the new lavatory sink I had to install a new P-trap and lengthen the run by about an inch. Everything's hooked up, but the sink won't drain. I ran a snake (non-poisonous
) down the line from the auto-vent for approx. 10 feet. I'm sure I reached the grey tank. Hooked everything back up but it still doesn't drain. I poured water down my shower drain to make sure the holding tank wasn't full.