[bongko]

I pulled out what I think are the OE plugs (serial number has the S which I can't buy anywhere) around 38k miles and I noticed that there is uneven wear when comparing all 6 of them. I took them out in order from closest to the bumper going towards the windshield and they are labeled 1 (near bumper) to 6 (near windshield).

I'm not sure how the cylinders are numbered but it seems like plug 1,2,3 are the worst and 4,6 kinda new. The back of 4 and 6 also have a kind of burn mark that i didn't see on the others.

All of the cylinders had similar amounts of rust left in the hole except plug 4, there was hardly any. I used a shop vac to suck it out.

The question I have is does it look like plugs 1,2,3, and 5 are running lean and 4 & 6 are optimal? Or am I reading them wrong and they are just burnt. Also is there any way to get the other cylinders to run optimal?

[overcoil]

those plugs look good, they probably are original.

[bongko]

Originally Posted by ScottSinger

those plugs look good, they probably are original.

Ok I'm glad for that! The new OEM plugs from FCP Euro have been in the car for at least 500 miles and no issues so far so I'm pretty happy.