

Video
VIDEO: How Can You Tell If A Spark Plug Is Worn Out?
The difference in wear on a spark plug between 30,000 miles and 120,000 miles can be almost imperceivable.
The difference in wear on a spark plug between 30,000 miles and 120,000 miles can be almost imperceivable.
The greater the vibration or shock, the higher the voltage and frequency. This video is sponsored by NGK Spark Plugs.
One of the key factors for a shop’s success is its reputation for customer service. While you cannot change the...
One of the key factors for a shop’s success is its reputation for customer service. While you cannot change the...
Worn spark plugs can cause more damage to an engine than you might think. This video is sponsored by Autolite.
How much easier and simpler would life be if every problem had a one-size-fits-all solution? Unfortunately, that will never be...
In this video we discuss what it takes to fire a spark plug under pressure. This video is sponsored by...
Here's everything you need to know when tightening a spark plug. This video is sponsored by Autolite.
The reality is that for technicians working on a car this almost never works. This video is sponsored by Carter.
We discuss how wear due to plasma erosion can change firing voltages. This video is sponsored by Autolite.