I got my car tuned by STLLT1. Before I went in I changed my plugs and noticed that the #7 was sut and oil covered.

Sorry about the blurry camera pics, but they get the point across. #7 is on the left and another normal plug on the right.



It's a slight miss. Rarely will it fully miss, or fully fire. It randomly falls on its face or picks up power accordingly. Looking at the MAF curve, it had tons of peaks and valleys. So we know its missing, although you can't feel it much past the cam. It could be something in the ignition, or weak valve spring or collapsed lifter.

STLLT1 and I also did a compression check on the #7 cylinder, and it had more compression than a cylinder that was firing normally.

I just threw a new spark plug wire on the #7 and pulled the plug just to check it. It's dark, and oil is covering the threads of the plug.



Just wondered if I could get confirmation if there is oil finding its way into the 7 cylinder, by either the valve guide or rings.

Any input is appreciated.

 

No offense but the pictures a crap. These guys will definitely comment on your plugs but you need better quality photos. Take your picture in direct sunlight ans use the closeup mode (flower icon) for the shot and repost.