I have model Technics 16% nitro fuel. I have'nt driven my MT 2 for a while, but when I look in the fuel tank, the rest of the fuel in the tank is starting to be orange[&:], but usually it's pink. Should I empty the tank before I drive again? Is it bad if its orange instead og pink?

yes its bad because it changes color becuase i moisture. so empty it out wash it out with water and let it dry really well

WHOA!

Don't put water in there... WHY WOULD YOU TELL SOMEONE TO DO THIS?

If the tank actually needs cleaning after you drain it, take the lines off and use nitro spray cleaner... NOT water. And don't forget to remove the lines.

Ok, thanks.
Is'nt it enough to dry it with toilet paper (if I can make it fit)?

NO just spray it like Frost said then let it dry never put anything in your tank other than cleaner or fuel.

i cleaned my tank out with water before i always do it i take it off the truck and clean it with water and then i let it sit in the room for abput 3 days, its works fine. you must think the word WATER in a rc

Never, but NEVER add water into something that would feed your engine. Moisture u dont see is in there and eventually works its way into the engine... this could explain your broken crankshaft, nitro rustler racer.

you should be draining your fuel tank after you're done driving anyways..... why would you have fuel in teh tank?
Take off both fuel lines, blow in the one coming from the pipe, and watch the fuel come out the other one.