You should get a haynes manual for 00-07 Focus before you go taking things apart...
The body style is different but a good 80% of the cars are identical. The biggest differences are the interior.
Mechanically, about 95% of instructions and photos for the Duratec will be identical to your car.
Also, if you don't know what to look for, it is best to take it to a shop or dealer. It's a 2011, you should still have warranty left on it?
2011 SES 5spd #006 >> SR #213
What other people think of me is none of my business.