Silverado 1500 4WD V8-5.3L VIN T (2004)
Fuel Injector: Description and Operation
Fuel System Description (Cab Chassis)
FUEL INJECTORS
The Multec 2 fuel injector assembly is a solenoid device, controlled by the PCM, that meters pressurized fuel to a single engine cylinder. The PCM
energizes the high-impedance (12.0 ohms) injector solenoid (2) to open a normally closed ball valve (3). This allows fuel to flow into the top of the
injector, past the ball valve, and through a director plate at the injector outlet. The director plate has two machined holes that control the fuel flow,
generating a spray of finely atomized fuel at the injector tip. Fuel from the injector tip is directed at the intake valve, causing it to become further
atomized and vaporized before entering the combustion chamber. This fine atomization improves fuel economy and emissions.
