djbartu

These photos are of the spark plug (AC Delco 41-108) from the #1 cylinder . All three others, although carboned look much better. I bought the car used at 19,000 miles and now it has 86,000. So, I would assume this is original. Car ran fine with this plug, no stutters, hesitations, misfires,etc.

I was just wondering what could have happened. The ground electrode looks bent and the metal has eroded from the spark.

Any thoughts?





I scraped a bit of the carbon to give a better view of eroded ground

Oldblue

Looks like it was dropped prior to installation, wind in the news ones and let'r rip!

whopper

x2. Throw it away and put in a new set.

TurboTechRacing

Dropped, causing spark to go to the side, most likely not proper clearance either.