Upper Intake Manifold Cleaning Procedure - Suzuki XL7 2007 Service Manual

1D-216 Engine Mechanical:
Intake Manifold Cleaning and Inspection
Reference: "Intake Manifold Disassemble: ".

Upper Intake Manifold Cleaning Procedure

1. Remove any remaining gasket and/or gasket
material from the following:
– Throttle body
– Intake manifold
2. Clean the following intake manifold areas in solvent.
– Intake manifold gasket sealing areas
– Intake manifold passages
– Brake booster hose passage
– Evaporative emission (EVAP) solenoid passage
– Positive crankcase ventilation (PCV) vacuum
hose passages
WARNING
!
Refer to "Safety Glasses Caution: ".
3. Dry the upper intake manifold and throttle body with
compressed air.
Inspection Procedure
1. Inspect the upper intake manifold for the following
conditions:
– Damage, debris or restrictions to the PCV system
hose port (1)
– Damage, debris or restrictions to the EVAP purge
solenoid port (2)
– Damage to the intake manifold bolt bosses (3)
– Damage to the EVAP purge solenoid mounting
boss (4)
– Damage, debris or restrictions to the brake
vacuum booster hose port (5)
– Damage or corrosion to the intake manifold
expansion plugs (6)
– Damage to the engine coolant air bleed pipe
bracket mounting boss (7)
2. Inspect the upper intake manifold for the following
conditions:
– Damage to the threads and boss for the fuel
injector sight shield ball stud (1)
– Damage, debris or restrictions within the intake
manifold passages (2)
– Damage to the engine coolant air bleed pipe
bracket mounting boss (3)
– Damage to the intake manifold bolt bosses (4)
– Damage or corrosion to the intake manifold
expansion plug (5)
– Damage to the throttle body bolt holes (6)
3. Inspect the upper intake manifold for the following
conditions:
– Gouges or damage to the upper intake manifold
sealing surfaces (1)
– Damage to the gasket sealing surface (2) for the
throttle body