Spark Plug Technique (Scorpio 2)

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

The heat rating indicates the degree of permissible thermal load of the spark plug. The lower the heat rating of the spark plug, the greater the thermal load it can withstand. Such a spark plug dissipates heat better, thereby preventing pre-ignition (engine knocking). A spark plug capable of operating at high thermal loads has, first of all, the disadvantage of having a relatively high self-cleaning temperature. Such a spark plug becomes covered with carbon deposits faster, especially when the engine often does not reach its operating temperature during trips (trips in urban conditions, short-distance trips in winter). As a rule, "cold" spark plugs are installed on "hot" engines operating under high loads. The heat rating is contained in the spark plug designation.

Standard spark plugs for FORD SCORPIO engines

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