Manufactures Proprietary Terms
  • Autolite HT Plugs


    • Racing Plugs
  • Autolite Racing Charts


    • Test Results and Media
  • Autolite's spark plug change walk-through

  • Autolite's tune-up safety tips


    • Conversion Charts
  • Displacement Conversion Chart


    • Center Electrodes
  • Iridium

  • Fine wire

  • Tapered center

  • Necked down


    • Ground Electrodes
  • Sidewire Technology

  • Cut back ground

  • Trimmed side electrode

  • Multi-ground


    • Resistor Types
  • Resistor


    • Precious Metal Types
  • Platinum


    • Plug Problems
  • Breakage

  • Erosion

  • Lead Erosion

  • Lead Fouling

  • Normal Plug Wear

  • Overheating

  • Fouling

  • Bridging

  • Deposits

  • Pre-ignition

  • Quenching


    • Plug Properties
  • Thread

  • Reach

  • Hex

  • Terminal

  • Seat

  • Center electrode

  • Ground electrode

  • Copper core

  • Diameter


    • Ignition Anachronism
  • Wasted Spark Ignition

  • Distributorless Ignition System

  • DIS


    • Glow Plugs
  • After Glow

  • Ceramic Glow Plugs


    • Manufacturer's Numbering System
  • Autolite


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    		Lead erosion is caused by lead compounds in the gasoline chemically reacting with the material of the electrodes in high temperatures. Typical lead erosion causes the surface of the ground electrode to become thinner, and the tip of the electrode looks as if it has been chipped.
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