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We are committed to training everyone on auto repair and maintenance, from DIYers to high-level technicians. Find resources, tips, how-to guides and more on spark plugs, technical sensors, vehicle electronics and caring for a range of vehicles.

How Often Should I Replace My Spark Plugs?

May 7, 2021 DIY, Resources, Students/Educators, Technical Training, Trade, Spark Plugs, Article, Video
How often should I replace my spark plugs? Unfortunately, there is no single answer to this question. As spark plugs grow older, they lose their sharp edges as material from the center and ground electrodes is slowly eroded away. As the gap between these…
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Decoding Spark Plug Part and Stock Numbers

May 9, 2019 Resources, Students/Educators, Technical Training, Trade, Spark Plugs, Article
Decoding Spark Plug Part and Stock Numbers Did you know every NGK spark plug has both a plug number and a stock number? Only the plug number is labeled on the spark plug, while both are printed on the box. The plug number is used to decode the spark plug…
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Waste Spark Ignitions

May 9, 2019 Resources, Students/Educators, Technical Training, Trade, Spark Plugs, Article
Waste Spark Ignitions Like most automotive systems, the ignition system has undergone many changes. One example is the Distributorless Ignition System, or “DIS” for short. This system introduced in the 1980s. The distributor, coil, cap and rotor the…
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Understanding Spark Plug Heat Range

May 9, 2019 DIY, Resources, Students/Educators, Technical Training, Trade, Spark Plugs, Article
Understanding Spark Plug Heat Range One of the most misunderstood aspects of spark plugs – is the heat range. One misconception is that the heat range is related to the spark temperature or intensity. Another common misconception is that the spark plug…
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How do I "read" a spark plug?

May 9, 2019 DIY, Resources, Students/Educators, Technical Training, Trade, Spark Plugs, Article, Video
HOW DO I “READ” A SPARK PLUG? Being able to “read” a spark plug can be a valuable tuning aid. By examining the insulator firing nose color, an experienced engine tuner can determine a great deal about the engine’s overall…
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