Manufactures Proprietary Terms Champion PowerSport Champion Stainless Steel Plugs EZ Start Conversion Charts Displacement Conversion Chart Heat Range Interchange (NGK-Denso-Champion-Bosch) Center Electrodes Fine wire Tapered Ground Electrodes V-trimmed Angled ground Cut back ground Multi-ground Resistor Types Resistor Inductive resistor Q-type suppressor Resistor Q-type suppressor Precious Metal Types Iridium Platinum Gold palladium Plug Problems Breakage Erosion Lead Erosion Lead Fouling Melting Normal Plug Wear Overheating Shadowing Fouling Bridging Deposits Pre-ignition Flashover Quenching Plug Properties Thread Reach Hex Terminal Seat Center electrode Ground electrode Copper core Diameter Ignition Anachronism Wasted Spark Ignition Radio Frequency Interference RFI Distributorless Ignition System DIS Capacitor Discharged Ignition CDI Resistor Glow Plugs After Glow Manufacturer's Numbering System Champion

Angled ground Cut back Ground Traditional ground Cut back ground and angled ground electrodes both improve performance by exposing more of the air fuel mixture to the flame nucleus and reduce quenching by limiting the available contact (surface) area between the electrodes and the flame nucleus. See "quenching" for more information.

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