I know you can't see it up close or smell and feel it but, does anything look particularly bad or good? Thanks for looking.

 

For what I can see, looks fine, why do you ask?

 

Looks like a normal stock plug to me as well. I am curious to know the reason for this line of questioning as well.

 

Looks like a used Iridium plug to me, normal looking too.

 

well, i have a p0304 code. i've got my own obd2 reader and it comes back when i clear it after 10-20 miles. i'm following mikes instructions to bring it back to the dealership and have them honor their 12 month warranty on the plugs and wires to see if that's the problem. the plugs and wires were replaced within the past 12 months.
but, i'm just curious to see if there are any signs of coolant that can be seen on the plug. if coolant is getting in there making the miss happen, can you see it on the plug. will it rust or get really clean? by the way, this is the plug from cylinder 4

 

What truck is this plug out of?

 

the 04.

 

Don't worry about it, that is what the warranty is for. Let the dealer check and fix the problem, mostly a bad wire.

 

x2 bad wire
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Bmw e34