hey guys, i have 2004 Accord V6 w/ 56000 miles. Basically I'm having missfire issue, whenever I go WOT (wide open throttle) the check engine light flashes 5-6 and then goes off. when i floor it again the check engine flashes but this time it stays on. i pulled the codes p0301, p0305, and p0300. today i changed the plugs and after that i went WOT and again the check engine started flashing. the engine idles normal and if i drive normal, the car drives fine. so what could it be coils? injectors?
thanks

 

P0300 Random Misfire
P0301 No. 1 Cylinder Misfire
P0305 No. 5 Cylinder Misfire

what kind of plugs did you put in? did you gap them properly if they required gapping?

how do your plug wires look?

also where do you get your gas? fuel filter changed within last 20,000 miles?