Spark Plug Fouling Archives - Tomorrows Technician
VIDEO: What Causes Spark Plug Deposits?

If you can’t determine if it is carbon or oil fouling, smell the plug. This video is sponsored by Autolite.

VIDEO: Diagnosing Spark Plug Stains And Misfires

Most modern engines put the spark plug in a deep well between the camshafts. This video is sponsored by Autolite.

VIDEO: Diagnosing Carbon Tracking On Spark Plugs

Make sure to inspect the old spark plugs and boots before you install the new ones. This video is sponsored by Autolite.

VIDEO: Why Oil Fouls Your Spark Plugs

Each cause of oil fouling indicates different engine problems. This ASE G1 test prep 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.