C 2500 Suburban 2WD V8-454 7.4L VIN J SFI (1998)
Fuel Injector: Service Precautions
WARNINGS:
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This composite fuel rail design utilizes a unique injector clip design. This clip design does not permit the rail and injector assembly to be
pressurized with fuel pump pressure when the rail assembly is not secured in the engine manifold. Pressurizing the rail assembly without
the injector secured in the engine manifold may cause high pressure fuel to bypass the upper injector O-ring seal resulting in a fuel leak.
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Do Not apply fuel pressure to the fuel rail assembly unless the fuel rail assembly is properly secured in the engine manifold.