Spark plugs — general information (Mondeo 1)

Spark plugs consist of a central electrode, an insulator with a housing, and a ground electrode. The ground electrode is hermetically connected to the insulator, the insulator is firmly connected to the housing. An igniting spark jumps between the central electrode and the ground electrode, which should ignite the fuel-air mixture.

The readiness of the engine to start, idle characteristics, acceleration characteristics and maximum speed depend on spark plugs. Therefore, you should not refuse the type of spark plugs installed and recommended by the manufacturer without good reason; the choice of this type is determined by the glow number of the spark plug. The glow number of the spark plug indicates the degree of thermal load of the spark plug. The lower the glow number, the higher the thermal load of the spark plug. The spark plug removes heat better, as a result of which it is possible to eliminate harmful detonation knocking.

The disadvantage of spark plugs with a higher thermal load is that their self-cleaning temperature also becomes higher. Therefore, carbon deposits accumulate on the spark plug faster, especially in cases where the engine often cannot reach its operating temperature during driving (driving in the city, driving short distances in winter). As a rule, "cold" spark plugs are installed in "hot" engines, i.e. in engines that require high power. The heat rating is included in the spark plug code.

The original can be found on the specified resource FORDBOOK.RU