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Spark Plugs: Choosing A Heat Range

Choosing a set of racing spark plugs for a particular application is not as easy as it sounds because the plugs have to be closely matched to the application.

Installing Spark Plugs: Avoiding A Misfire

The potential for inadvertently creating a misfire is very real when installing new spark plugs. I say this because I’ve diagnosed many misfires created by greasy fingerprints, broken insulators and incorrect air gaps – all caused by poor installation procedures.

Spark Plugs: The Lost Art Of Gapping

For a long time, the copper core spark plug ruled the roads. For under a dollar, you could buy a plug that would fit, but you had to gap the plug the correct distance between the ­electrodes yourself.

The Science Behind Precious Metal Spark Plugs

The higher melting point of iridium and platinum allows spark plug manufacturers to reduce the diameter of the center electrode. The smaller the diameter of the center electrode, the lower the voltage needed to start the spark. The finer point means that the electrode can absorb heat easier and faster, leading to improved acceleration, fuel consumption and smoother idling.

Five Spark Plug Service And Replacement Tips

Most articles will tell you to use a torque wrench, but they never explain why.

Spark Plug Removal and Installation

Spark plugs have changed more in the past decade than in the previous century, which has directly influenced technicians and installation procedures. In this webinar, experts will cover new spark plug designs for modern engines and ignition coils.

Spark Plug Replacement

Here are some tips to follow when replacing a spark plug.

Spark Plug Fouling

Understanding why plugs get dirty.

Which of the Following is Least Likely to Cause a Weak Spark?

Make sure to read the question and answers carefully before selecting an answer. This video is sponsored by Autolite.

Spark Plug Procedures (VIDEO)

It’s a good idea to polish up your knowledge of engine ignition systems. This video is sponsored by Autolite.