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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.

What do the wire colors represent?

March 19, 2019 Resources, Technical Training, Trade, Sensors, Article
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How do I install spark plugs correctly?

March 19, 2019 DIY, Resources, Students/Educators, Technical Training, Trade, Spark Plugs, Article, Video
How do I install spark plugs correctly? It is essential to tighten a spark plug to the specified turning angle or torque setting. First, screw in the plug finger tight until the gasket meets the cylinder head. Then seat the plug/gasket with a torque or…
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Are special plugs always necessary on a modified engine?

March 19, 2019 DIY, Resources, Students/Educators, Technical Training, Trade, Spark Plugs, Article
ARE SPECIAL PLUGS NECESSARY ON A MODIFIED ENGINE? It depends on the modifications. The term “modified” refers to those engines with bolt-on components that may or may not raise the total compression ratio of the engine. These can include turbocharging,…
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Do I need to set the "gap" when installing a new set of plugs?

March 19, 2019 DIY, Resources, Students/Educators, Technical Training, Trade, Spark Plugs, Article, Video
DO I NEED TO SET THE “GAP” WHEN INSTALLING A NEW SET OF PLUGS? Maybe. A spark plug part number might fit hundreds of different engines from many different manufacturers. Although the NGK factory will set the gap to a preselected setting, this…
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Why are there different heat ranges?

March 18, 2019 DIY, Resources, Students/Educators, Technical Training, Trade, Spark Plugs, Video
WHY ARE THERE DIFFERENT HEAT RANGES? It is a common misconception that spark plugs create heat. They don’t. A heat range refers to how much heat a spark plug is capable of removing from the combustion chamber. Selecting a spark plug with the proper…
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