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Snapped spark plug

Andy2017
Andy2017
in Ford Focus Club

Featured Replies

Hello people.

I got a Focus 1.5 STline 2017 and it keeps cracking the spark plug on cylinder three. After three plugs cracking I swapped the coil pack from number three to number 4 and it's cracked plug number three again.

No sign of over heating or fueling, or lost of fuilds.

Any ideas?

  • Quote


    See this reddit post: https://www.reddit.com/r/MechanicAdvice/comments/de9j90/cermaic_on_cylinder_2_and_4_spark_plugs_keep/?rdt=57637

    Are you sure they're cracks, not marks as discussed above? If they're marks, try replacing the plug again along with a new coil pack and maybe throw a little dielectric grease in the end of the rubber boot while you're at it.

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    • Like 3

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