Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1995SPORTVAN G20, 6.5 PREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT VARIANT/TRIMSECTION 16 (ENGINE CONTROLS - REMOVE/INSTALL/OVERHAUL - 4.3L)FUEL SYSTEMUPPER INTAKE MANIFOLD & CPI ASSEMBLYREMOVAL
1995 Chevrolet Sportvan G20, 6.5 P
Upper Intake Manifold & CPI Assembly: Removal
1995 Chevrolet Sportvan G20, 6.5 PSECTION Removal
WARNING: This page is about a different variant/trim than selected.
- Relieve fuel pressure. See FUEL SYSTEM PRESSURE RELIEF (CPI) under FUEL SYSTEM . Disconnect negative battery cable. Remove plastic cover on upper intake manifold. Disconnect electrical harness connectors from TP sensor, IAC valve, MAP sensor and intake manifold tuning valve assembly.
- Disconnect throttle and cruise control cables from upper intake manifold. Remove ignition coil, PCV hose and related vacuum hoses. Remove air cleaner snorkel.
- Mark location of all studs for proper reassembly. Remove upper intake manifold bolts and stud nuts. Remove upper intake manifold assembly. See Figure.NOTE: DO NOT attempt to disassemble CPI assembly. CPI unit is not serviceable and should be replaced as an assembly.
- Remove injector wiring harness connector at CPI unit. Remove and discard fuel fitting clip. Disconnect fuel inlet and return lines, and fitting assembly. Discard "O" ring seal.
- To remove CPI assembly from intake manifold, squeeze poppet nozzle locking tabs together while lifting nozzle out of casing socket from each cylinder. After removing all the poppet nozzles (6), lift CPI assembly out of casing. See Figure.
RENDER: 1.0x
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.