Spark Plug Archives - Page 3 of 4 - Tomorrows Technician
VIDEO: Is Corona Killing Spark Plugs?

Do the stains on a spark plug indicate imminent engine failure? This ASE G1 test prep video is sponsored by Autolite.

VIDEO: Spark Plug Heat Ranges

Do you understand the difference between spark plug heat ranges? This ASE G1 test prep video is sponsored by Autolite.

VIDEO: Hot Or Cold Spark Plug Torque

We discuss how and when spark plugs should be installed. This video is sponsored by Autolite.

VIDEO: Misfires In The Ignition System

It is so important to correctly diagnose misfires before repairs. This video is sponsored by Autolite.

VIDEO: To Gap Or Not To Gap Spark Plugs

Find out what spark plugs need to be gapped and the tools required to get the job done. This video is sponsored by Autolite.

Spark Plug Fouling: Getting To The Root Cause Of Misfires

Spark plugs are the “canary in the coal mine” of the combustion chamber. The electrodes and porcelain can reveal short- and long-term problems if you know where to look.

VIDEO: Spark Plug Design And Torque Specs

Andrew Markel discusses the different aspects of spark plug design, including when to use anti-seize, the purpose of the insulator, and how to determine the correct torque.

Finding That Spark Of Genius: Diagnosing Cranking, No-Start Failures

By the dawn of the Industrial Age, the gasoline internal combustion engine had replaced steam power as the driving force behind America’s great economic expansion. In that day, a cranking, no-start condition could easily be diagnosed by testing the available spark at the spark plug. If there was no spark, we touched a test light to the coil negative terminal to determine if the distributor contact points were switching the coil on/off. If the test light blinked, the primary circuit was switching as designed, so we replaced the coil. A pretty simple diagnosis, right?

The Anatomy Of: Spark Plugs

A spark plug takes electric current from the ignition system to the combustion chamber of an engine to ignite the air/fuel mixture through an electrical spark. Let’s look at what makes a spark plug work.

VIDEO: Spark Plug Installation At The Correct Engine Temperature

Andrew Markel explains at what temperature the engine should be to install spark plugs without future issues.

VIDEO: How Not To Test A Spark Plug

Contrary to popular belief, testing a spark plug outside the cylinder won’t give you accurate results. Find out why air pressure matters and how to properly perform the test by measuring secondary ignition waveforms with Andrew Markel.

VIDEO: The What, When And Why Of Spark Plug Replacement

Andrew Markel explains the what, when and why of spark plug replacement with information that can help your customers realize the importance of these components.