TrailBlazer 4WD L6-4.2L VIN S (2002)
Fuel Rail: Description and Operation
FUEL RAIL ASSEMBLY
Fuel Rail Assembly
The fuel rail assembly attaches to the cylinder head. The fuel rail assembly performs the following functions:
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Positions the fuel injectors in the cylinder head
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Distributes fuel evenly to the fuel injectors
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Integrates the fuel pressure regulator with the fuel metering system
