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Help! P0306 code!

Shutzero

New member
My 2006 grand prix threw the cylinder 6 misfire code when I went to change the plugs the cyl 6 plug had oil on the plug threads any ideas before I start wasting money in parts by chasing this?
 


I replaced the plug and it still is missing...ill check the wire tonight, any idea why there was oil on the threads though?
 
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