I have recently been having a missfire issue around 4-5k rpm. It seems like it only happens when I start WOT from a low rpm like crusing on the freeway in 5th then going WOT. It will pop and hesitate then continue normally till redline. No CEL though.
Anyway, from reading on here it seemed like changing the plugs was a good way to start resolving the issue. I pulled the bpr7eix stock equivalent irridiums with 26k miles on them and the electrodes all look normal, as you can see in the picture.
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The other end of one of them though looks corroded and the porcelain is turning yellow at the base.
I was just wondering if this was a bad plug, or is it time to replace my plug wires?
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