Mazda CX-7 2007 Workshop Manual page 462

VACUUM HOSE ROUTING DIAGRAM[L3 WITH TC]
VARIABLE SWIRL
SOLENOID VALVE
PCV VALVE
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INTAKE AIR SYSTEM MANIFOLD VACUUM INSPECTION[L3 WITH TC]
1. Verify that the intake air hoses are installed securely.
2. Warm up the engine.
3. Disconnect the vacuum hose connected between the check valve and the intake manifold from the intake
manifold and install the vacuum gauge. (See 01-14-19 QUICK RELEASE CONNECTOR REMOVAL/
INSTALLATION[L3 WITH TC])
4. Measure the intake manifold vacuum while idling (no load) using the vacuum gauge.
• If not within the specification, perform the following inspections.
— Accelerator cable play
— Compression pressure (See 01-10-9 COMPRESSION INSPECTION[L3 WITH TC].)
— Air suction (installation areas of throttle body, fuel injector, PCV valve, intake manifold)
Note
• If any air suction exists, the change in engine speed can be made apparent by spraying the penetrant
lubricating spray on the applicable part.
Standard
–71 kPa {–533 mmHg, –21 inHg} or more
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01-13–4
INTAKE-AIR SYSTEM [L3 WITH TC]
CHECK VALVE
VARIABLE SWIRL SHATTER
VALVE ACTUATOR
PURGE SOLENOID VALVE
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