My subaru is not running right it acts like it not getting enough gas. it hesitates to pull up hills you have to hold the pedal to the floor to make it go, i had autozone hook it up to there machine and it said the fourth cylinder is misfiring, they told me to change my spark plugs so i changed plugs wires and fuel filter, it did not fix the problem what do i need to do?
whats wrong with my car how do i fix it?