SPARK PLUGS

1. Spark plug

   
2. https://www.yourmechanic.com/article/symptoms-of-bad-or-failing-spark-plugs
3. https://www.yourmechanic.com/article/how-long-do-spark-plugs-last
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5. https://blog.firestonecompleteautocare.com/maintenance/everything-you-need-to-know-about-spark-plugs/

Description

1. A spark plug is a device for delivering electric current from an ignition system to the combustion chamber of a spark-ignition engine to ignite the compressed fuel/air mixture by an electric spark, while containing combustion pressure within the engine
2. https://www.carid.com/articles/types-of-spark-plugs.html
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4. https://www.google.com/search?q=spark+plug+diagram&sa=X&ved=2ahUKEwiFm_Gy3LjhAhU973MBHaSZB3MQ1QIoBnoECAoQBw&biw=1366&bih=657
5. https://www.gsparkplug.com/shop/spark-plug-construction/
6. https://www.ngkntk.com/