On 1/15/2014 9:28 PM, Oren wrote:
On Wed, 15 Jan 2014 20:55:47 -0500, wrote:

Pix:
http://s1201.photobucket.com/user/sh...dirty.jpg.html

I replaced the entire valve assembly and the flapper.
Still, the toilet dirt lines appear, as can be viewed on the pix.
What should I do next?
tia

Read this link carefully about using muriatic acid to clean the bowl
rim jets. Carefully if on a septic system as it requires baking soda
to neutralize the acid before a flush.

The "dirt" - slime is coming from the rim bowl jets.

http://www.wikihow.com/Fix-a-Slow-Toilet

Plenty of old threads in AHR about it. You could use some muriatic
acid in the bowl, brush with a nylon toilet brush, the stains will
come back sooner, unless the rim jets are cleaned.

Side view of the rim jets (flush passages), etc.

http://www.hometips.com/wp-content/uploads/2012/06/toilet-plumbing-diagram.gif


Muriatic is a big gun for the uninitiated! Not to mention having to buy
it by the gallon. I saw a video yesterday while researching other
plumbing issues, using vinegar poured into the fill tube, with funnel.

http://www.youtube.com/watch?v=A-hEJ6Xwbpc

The dirty streaks look black....if they are black, it is likely rubber
parts in the tank breaking down. Those cakes of stuff to hang in the
tank to clean the toilet can cause the parts to deteriorate.