Cleaning Procedure

WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

Remove the manifold absolute pressure (MAP) sensor from the rear of the intake manifold. The MAP sensor is to be installed upon completion of the cleaning and inspection procedures.
Inspect the sealing grommet on the MAP sensor. The grommet should not be torn or damaged.

Fig 1: Removing Manifold Absolute Pressure Sensor From Rear Of Intake Manifold
Courtesy of GENERAL MOTORS CORP.
Remove the throttle body.

Fig 2: Removing Throttle Body
Courtesy of GENERAL MOTORS CORP.
Remove the throttle body gasket (1).
Discard the gasket.

Fig 3: Removing Throttle Body Gasket
Courtesy of GENERAL MOTORS CORP.
Remove the fuel rail with injectors.

Fig 4: Removing Fuel Rail With Injectors
Courtesy of GENERAL MOTORS CORP.
Remove and discard the intake manifold-to-cylinder head gaskets (1)

Fig 5: Removing Intake Manifold-To-Cylinder Head Gaskets
Courtesy of GENERAL MOTORS CORP.
Clean the intake manifold in solvent.
- Clean the intake manifold gasket grooves.
- Clean the intake manifold vacuum passages at the rear of the intake.
CAUTION: Refer to SAFETY GLASSES CAUTION .
Dry the intake manifold with compressed air.
Upon installation of the intake manifold, install NEW manifold-to-cylinder head gaskets.