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Pontiac G6 2007 (57k) P0303 3rd Cylinder Misfire=HELP!

9012 Views 6 Replies 6 Participants Last post by  daddyloveslana
Hello! can anyone help me with this?
I have a 2007 Pontiac G6 with code P0303, third cylinder misfire..

Already did the following:
Swapped Plugs
Swapped coils
Cleaned Fuel Injector

*Engine is running fine! no problems running! cant seem to figure this out... The engine light, comes on and off inconsistently once it is reset. Days, weeks... not directly after the light has been reset...

Anyone have any ideas or help!?
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the engine is running fine!

Hey Guys, Forgive me, this is my car but i am writing to you what my mechanic (father) has tried so far.. sorry if my lingo is offf.

He says that it is not a spark plug wire... he has checked/replaced those!.

any other thoughts,... the engine is running fine which i guess he is saying that is why it cannnot be a spark plug wire.
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