CTS V8-5.7L VIN P (2004)
Fuel Rail: Description and Operation
FUEL RAIL ASSEMBLY
The fuel rail assembly attaches to the engine intake manifold. The fuel rail assembly performs the following functions:
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Positions the injectors (1) in the intake manifold
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Distributes the fuel evenly to the injectors
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Integrates the fuel pulse dampener (2) into the fuel metering system.
The fuel rail is mounted on the intake manifold and distributes the fuel to each cylinder through the individual injectors.