black gunk in tank

[srutherford]

Well bike didn't run very well starves for fuel. I diagnosed the problem and its some sort of black unidentified substance almost like rust converter. That's all I can come up with that makes sense atleast I have heard of this sort of thing happening. So my?  Is any suggestions on how to clean it out. And im sad now because im sure my freshly cleaned worked so hard carbs are filled with this stuff. O and any. Ideas or can direct me to a thread on fuel line routing. 

[FJmonkey]

Well bike didn't run very well starves for fuel. I diagnosed the problem and its some sort of black unidentified substance almost like rust converter. That's all I can come up with that makes sense atleast I have heard of this sort of thing happening. So my?  Is any suggestions on how to clean it out. And im sad now because im sure my freshly cleaned worked so hard carbs are filled with this stuff. O and any. Ideas or can direct me to a thread on fuel line routing. 

Wow! You really need to be looking for some Navy Seals to hunt down the Previous Owner (PO) and deep 6 em... Your carbs should clean out properly as long as you don't leave that $#@^ sit for too long. And you have some kind of filter between the tank and carbs.

[Pat Conlon]

.....and its some sort of black unidentified substance almost like...... 

I remember seeing that episode in the X Files....

[srutherford]

Yea lol im gona atempt to clean it out this eve

[RichBaker]

Thought I posted this yesterday, but.....

The residue from ethanol + old varnish in the fuel system is a black gunk....

[srutherford]

Ok so berryman chem dip that's what I use to clean carbs great stuff kinda $$$  I have some left I could use? ??