misfire on cylinders one and two on 1997 Hyundai Elantra

about every one hundred miles I get a misfire code P0301 or P0302 and sometimes I get both at once. Replacing injectors is getting costly.

Asked by for the 1997 Hyundai Elantra
1 answer
plugs and coils is where you start. these are basic maintenance items.
did you change these yet??