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Home >> Ford >> 1990 >> Probe GL, Automatic >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Fuel Control Operation >> Fuel Injector Nozzle

Fuel Injector Nozzle

The fuel injector nozzle is an electromechanical device which meters and atomizes the fuel delivered to the engine. The injector valve body consists of a solenoid actuated ball and seat assembly.

An electrical control signal from the EEC-IV processor operates the solenoid, allowing the ball to move off its seat and fuel to flow. The injector flow orifices are fixed, and fuel supply pressure is constant. Amount of fuel flow to the engine is controlled by amount of time the solenoid is energized.