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How To Select Spark Plugs For Your Engine

Spark Plugs

The spark plug is the difference between a pile of parts sitting quietly in your car and a running engine. If they don’t work correctly, your engine doesn’t run well, if it even runs at all.

Take the time to learn about the ins and outs of spark plugs, how to prepare them for your engine combination properly, and how you can use them to make a little extra horsepower on the cheap!

Jeremy Stoermer with Holley goes over everything you need to know.

  • 00:00 – Intro
  • 00:33 – Spark Plug Options
  • 01:50 – Temperature and Heat Range
  • 04:21 – Spark Plug Gap
  • 05:35 – Tapered vs. Washer Seats
  • 06:20 – Terminal Nut vs. Threaded Nut
  • 06:48 – Indexing Plugs
  • 08:15 – Ignition Boxes

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