Spark Plug Archives - Page 4 of 4 - Tomorrows Technician
VIDEO: The Misfire Crime Scene

Andrew Markel discusses spark plug ignition wires and what to inspect in the case of a misfire.

VIDEO: Understanding Secondary Ignition Waveforms

Andrew Markel picks apart secondary ignition waveforms and how burn time can reveal the condition of a spark plug.

VIDEO: The Worst Spark Plug Jobs (Part 2)

Andrew Markel finishes the list of the six most difficult spark plug jobs you may have already dealt with. This video includes the ’67-’69 Ford Mustang, the Chevy Monza and the AMC Pacer.

VIDEO: The Worst Spark Plug Jobs (Part 1)

Andrew Markel starts on a list of the six most difficult spark plug jobs you may have already dealt with. This video includes the GM Quad-4 engine, the Toyota Previa van, and the Chrysler Town and Country.

Spark Plug Replacement Basics: Removal, Installation And Choosing The Right Plug

Spark plug replacement is often considered one of the least complicated tasks at a shop. But, ignorance of what you are dealing with can get you into trouble before, during and after the new plugs are installed.

Spark Plug Diagnostics

If you are replacing spark plugs to solve a misfire problem, you might want to take a look at the original plugs to make sure you are replacing them for the right reasons.

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.

Tips For Spark Plug Removal

Before attempting to remove the spark plugs on a vehicle, first determine any special instructions by the vehicle’s manufacturer for accessing the spark plugs because engines can vary widely by make and model.