Needed an oil change, so I went to the local Wally World and got my oil/filter. Thought I'd get some plugs also, so I got the recommeded Bosch double plats. What a mistake, misfires on 1 and 3 from the plugs. Took out both 1 and 3 coils. Went back to factory plugs and 2 new coils and it's back to running like it should. Lesson learned.