2001 Hyundai Sonata--Rough Idle--White spark plugs?

well as for the clogged injector,ive been a tech for 16 years and ive seen only 3 clogged or bad injectors.lean condition and rough idle can be a few things vaccuum leaks,fuel filter,fuel pump,clogged catalytic converter.the misfire could be a result of the lean condition.sometimes youll get a lean code and or a miss if the vac leak is near the cylinder that is missing.just giving you a direction or 2 to look in.hope this helps.