Spark Plug
- Application and ID
 Description and Operation
Testing and Inspection
- Broken, Cracked or Chipped Insulator
 - Brown to Gray/Tan Color - Normal Operating Condition
 - Dry, Fluffy Black Deposits - Cold or Carbon Fouling
 - Electrode Gap Bridging
 - Heavy Colored Deposits
 - Normal Operating Conditions
 - Oil or Ash Encrusted
 - Premature Electrode Wear - Preignition Damage
 - Red, Brown, Yellow or White Deposits - Fuel Additives
 - Shiny Yellow Glaze
 - Wet Oily Deposits
 - White or Gray - Burned or Blistered Insulator
 
Service and Repair
Specifications