Mazda CX 7. Manual — part 116
INTAKE-AIR SYSTEM [L3 WITH TC]
01-13–3
01-13
End Of Sie
INTAKE AIR SYSTEM FLOW DIAGRAM[L3 WITH TC]
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End Of Sie
TURBOCHARGER
RESONANCE
CHAMBER
INTAKE MANIFOLD
COMBUSTION
CHAMBERS
: INTAKE AIR FLOW
VARIABLE SWIRL
SHUTTER VALVE
AIR
CLEANER
FRESH-AIR
DUCT
CHARGE AIR
COOLER
AIR BYPASS
VALVE
THROTTLE
VALVE
THROTTLE BODY
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INTAKE-AIR SYSTEM [L3 WITH TC]
01-13–4
VACUUM HOSE ROUTING DIAGRAM[L3 WITH TC]
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End Of Sie
INTAKE AIR SYSTEM MANIFOLD VACUUM INSPECTION[L3 WITH TC]
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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
End Of Sie
CHECK VALVE
PURGE SOLENOID VALVE
PCV VALVE
VARIABLE SWIRL SHATTER
VALVE ACTUATOR
VARIABLE SWIRL
SOLENOID VALVE
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INTAKE-AIR SYSTEM [L3 WITH TC]
01-13–5
01-13
INTAKE AIR SYSTEM REMOVAL/INSTALLATION[L3 WITH TC]
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Warning
• A hot engine and intake air system can cause severe burns. Turn off the engine and wait until they
are cool before removing the intake air system.
• Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always keep
sparks and flames away from fuel.
• Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or death and
damage. Fuel can also irritate skin and eyes. To prevent this, always complete the “Fuel Line
Safety Procedure”. (See01-14-4 BEFORE REPAIR PROCEDURE[L3 WITH TC].)
1. Disconnect the negative battery cable.
2. Remove the charge air cooler duct.
3. Remove the battery and battery tray. (See01-17-2 BATTERY REMOVAL/INSTALLATION[L3 WITH TC].)
4. Remove the under cover.
5. Remove in the order indicated in the table.
6. Install in the reverse order of removal.
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INTAKE-AIR SYSTEM [L3 WITH TC]
01-13–6
7. Complete the “AFTER REPAIR PROCEDURE”. (See01-14-4 AFTER REPAIR PROCEDURE[L3 WITH TC].)
.
8
5
6
4
1
2
A
A
3
7
9
R
R
R
R
R
R
R
R
R
R
R
10
12
13
15
14
11
18.6—25.5 N·m
{1.90—2.60 kgf·m,
13.8—18.8 ft·lbf}
8—11.5
{82—117,
71—101}
17—23 N·m
{1.8—2.3 kgf·m,
13—16 ft·lbf}
37.2—51.9 N·m
{3.80—5.29 kgf·m,
27.5—38.2 ft·lbf}
7.8—10.8
{80—110, 70—95}
4.9 {50—43}
18.6—25.5 N·m
{1.90—2.60 kgf·m,
13.8—18.8 ft·lbf}
4.9 {50—43}
23.5—35.3 N·m
{2.40—3.59 kgf·m,
17.4—26.0 ft·lbf}
7.9—10.7
{81—109,
70—94}
7.8—10.8
{80—110,
70—95}
7.8—10.8
{80—110,
70—95}
0.55—0.85
{5.7—8.6,
4.9—7.5}
2.5—3.4
{26—34,
23—30}
N·m {kgf·cm, in·lbf}
8—11.5
{82—117,
71—101}
3.9—5.9
{40—60, 35—52}
17
16
23.5—35.3 N·m
{2.40—3.59 kgf·m,
17.4—26.0 ft·lbf}
2.5—3.4
{26—34,
23—30}
7.8—10.8
{80—110, 70—95}
7.8—10.8
{80—110,
70—95}
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