Have a code reading 'Mis Fire cylinder #6

[Widdershins]

We have changed the coils and plugs , also put new plugs in #6 and moving the 'BAD' one to other cylinders and the code kept reading the same .
What started this was stuttering down the road and finally barely being able to make it down the road at 25 -30 mph, Ran so rough , hubby wanted to get a tow but we live in the middle of no where.
Any help is appreciated. Oh and is there a special tool to get the fuel rail off and is there a trick to depressing the system?

 

[docraymund]

Pull the fuel pump fuse and run the engine till it stops. The fuel system is now depressurized. You will need a repair manual eventually so go get one. You will also need to do a compression test on cylinder #6.

 

[Bedrck47]

Check the wiring at the connectors for the coil and injectors Make sure they are clean and tight