Hi,
I need some advice. I have a 2004 dodge durango 5.7L Hemi with 204000kms on it. It just started misfiring on cylinder 7. It threw the code P0307.
Misfire is mild, rough idle seems fine at higher rpms. stumbles upon deceleration.
Today I removed the plugs from cylinder 7 and the spark plug gap has been reduced to almost 0 on both plugs!!!!
My immediate thought was that the piston is coming up and touching the plugs, like the connecting rod is loose, but the engine doesnt make any noise when running other than the rough idle????
Has anyone seen this before? No mechanical contact on the plugs as far as I can see.
I can post pictures of the plugs if needed.
Please advise.
Thanks. Matt