Spark Plug Selection

VIDEO: Choosing The Right Replacement Spark Plug

If your customer’s vehicle came with an iridium spark plug, they should never replace it with a copper, platinum or double platinum plug.

Today’s spark plugs last a lot longer than they did in the early years of the internal combustion engine, when plugs had a life expectancy of under 1,000 miles. 

Spark plugs with tips made from noble metals such as platinum and iridium offer better performance and corrosion resistance than the standard copper/nickel plugs of yesteryear. 

Some spark plugs can be expected to last 100,000 miles or more, although with today’s gasoline direct-injection and turbocharged engines, the change intervals might range from 30,000 to 60,000 miles. 

This video is sponsored by The Pronto Network.

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The stick coil eliminates ignition wires and utilizes wasted space by fitting neatly into the spark plug bore.

Ignition coils transform battery voltage into the higher voltage needed to jump the spark plug gap and efficiently ignite the air-fuel mixture in an engine.

Direct ignition coils are by far the most common type of ignition coil found in modern direct ignition systems, and they’ve been adopted by most of the major automakers. In this design, the coil mounts directly on top of the spark plug, eliminating the need for an ignition wire.

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