Spark plug technology

The spark plug consists of a central electrode, an insulator with a housing and a ground electrode. The central electrode is hermetically fixed in the insulator, and the insulator is firmly connected to the housing. An electric spark jumps between the central electrode and the mass electrode, which should ignite the air-fuel mixture. Starting qualities depend on spark plugs. engine idling properties, acceleration and maximum speed of the vehicle. Therefore, it is impossible to deviate without reason from the type of candle prescribed by the factory, which is determined by its glow number.

The glow number indicates the degree of permissible heat load of the spark plug. The lower the glow number of the spark plug, the greater the heat load it can withstand. Such a candle removes heat better, thereby preventing glow ignition (knocking in the engine). A spark plug capable of operating at high thermal loads has, above all, the disadvantage that it has a relatively high self-cleaning temperature. Such a candle quickly becomes covered with soot, especially when the engine often does not reach its operating temperature during trips (urban travel, short distance travel in winter). Usually, "cold" spark plugs are installed on "hot" engines operating under high loads. The glow number is contained in the designation of the spark plug.

Standard spark plugs for FORD SCORPIO car engines

Attention: Technical progress does not stand still It may turn out that other spark plugs are suitable for individual engines. Therefore, before buying new spark plugs, it is recommended to inquire at the service station about their required characteristics.

EA (Elektroden Abstand) - distance between electrodes, mm.