Labels:sketch | drawing OCR: Tracking Arc High voltage arcs Wide Gap between a fouling Spark plug electrodes deposit on the are worn so that the insulator tip and high voltage charge spark plug shell. This cannot arc across the ignites the fuel/air electrodes. Improper mixture at some gapping of electrodes point along the on new or "cleaned" insulator tip. spark plugs could retarding the ignition cause a similar timing which causes condition. Fuel a power and fuel remains unburned loss and a power loss results. Flashover A damaged spark Fouled Spark Plug plug boot, along with Deposits that have dirt and moisture, formed on the could permit the high insulator tip may voltage charge to become conductive short over the and provide a insulator to the spark "shunt" path to the plug shell or the shell. This prevents engine. AC's buttress the high voltage from insulator design arcing between the helps prevent high electrodes. A power voltage flashover. and fuel loss is the result. Bridged Electrodes Fouling deposits Cracked Insulator between the A crack in the spark electrodes "ground plug insulator could out" the high voltage cause the high needed to fire the voltage charge to spark plug. The arc "ground out." Here, between the the spark does not electrodes does not jump the electrode occur and the fuel air gap and the fuel air mixture is not mixture is not ignited. This causes a ignited. This causes a power loss and power loss and raw exhausting of raw fuel is exhausted. fuel.
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