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Fuel Injector|Testing and Inspection > < Fuel System - Fuel Injector Maintenance Cleaning|Page 4734
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Fuel Injector: Description and Operation

FUEL INJECTORS

The fuel injector is a solenoid device that is controlled by the engine control module (ECM). When the ECM energizes the injector coil, a normally
closed ball valve opens, allowing the fuel to flow past a director plate to the injector outlet. The director plate has holes that control the fuel flow,
generating a dual conical spray pattern of finely atomized fuel at the injector outlet. The fuel from the outlet is directed at both of the intake valves,
causing the fuel to become further vaporized before entering the combustion chamber.

The fuel injectors will cause various driveability conditions if the following conditions occur:

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If the injectors will not open

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If the injectors are stuck open

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If the injectors are leaking

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If the injectors have a low coil resistance

Fuel Injector|Testing and Inspection > < Fuel System - Fuel Injector Maintenance Cleaning|Page 4734