K 2500 Suburban 4WD V8-454 7.4L (1994)
Throttle Body: Service and Repair
Fuel Meter Cover Assembly
Fuel Meter Cover (TBI)
WARNING: DO NOT remove the four screws securing the pressure regulator to the fuel meter cover. The fuel pressure regulator
includes a large spring under heavy compression which, if accidently released, could cause personal injury. Disassembly might also be
result in a fuel leak between the diaphragm and the regulator container.
NOTE: The fuel meter cover assembly contains the fuel pressure regulator assembly. The regulator has been adjusted at the factory and should
only be serviced as a complete assembly.
REMOVAL:
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Disconnect electrical connectors to fuel injectors. (Squeeze plastic tabs and pull straight up).
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Remove long and short meter cover screw assemblies.
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Remove fuel meter cover assembly.
NOTE: DO NOT immerse fuel meter cover (with pressure regulator) in cleaner, as damage to regulator and gasket could occur.
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Remove fuel meter outlet gasket and pressure regulator seal. Discard old gaskets and seal.
INSPECTION:
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Inspect for dirt, foreign material and casting warpage.
INSTALLATION:
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Install a new pressure regulator seal, fuel meter outlet passage gasket, and cover gasket.
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Install fuel meter cover assembly.
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Install attaching screw assemblies, precoated with appropriate locking compound to threads. (Short screws are next to injectors.) Tighten
screw assemblies to 3.0 Nm (28.0 lb-in).
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Reconnect electrical connectors to fuel injectors.
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With engine "OFF" and ignition "ON", check for leaks around gaskets and fuel line couplings.
