I Have An 03 F150 supercrew lariat with a 5.4 liter and the son of a bitch will not brake torque anymore or even whip side ways it used to but after i change the plugs and cops it wont really seem to do it any more. i was just wondering if anyone new what i could do? thanks

 

o2 sensor maybe? or the injectors?

 

Yeah maybe an injector is plugged or something, what do u thing would be a good solution?