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Fuel injection supply manifold
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Fuel injector retaining clip
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Fuel injector O-ring seals
Fuel Injection Supply Manifold
The fuel injection supply manifold is retained to the engine by two bolts. The fuel injection supply manifold has pressed steel cups to house the fuel injectors.
The fuel injectors are fitted directly into the fuel injection supply manifold and are retained by the fuel injector retaining clips. Sealing between the fuel injector to fuel injection supply manifold and the intake manifold is achieved by means of upper and lower O-ring seals.
The fuel injectors are activated sequentially by the powertrain control module (PCM) which modifies the fuel quantity by adjusting fuel injector opening times according to the engine operating conditions.
Throttle Body
The throttle butterfly position is controlled by a signal from the PCM which receives an input from the accelerator pedal position sensor. The system is fully electronic and does not use any cables.
The signal from the PCM is used to control a DC motor within the throttle body which is connected to the throttle butterfly through gears.
The throttle body also gives inputs back to the PCM. This information allows the PCM to compensate for factors such as carbon build up within the throttle body and throttle body wear. The throttle body also provides information to the PCM to enable the flagging of a DTC.
