Infiniti G35 (V35) Sedan. Manual - part 606

COMPRESSION PRESSURE

EM-23

< ON-VEHICLE MAINTENANCE >

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• If some cylinder has low compression pressure, pour small amount of engine oil into the spark plug hole

of the cylinder to re-check it for compression.

- If the added engine oil improves the compression, piston rings may be worn out or damaged. Check pis-

ton rings and replace if necessary.

- If the compression pressure remains at low level despite the addition of engine oil, valves may be mal-

functioning. Check valves for damage. Replace valve or valve seat accordingly.

• If two adjacent cylinders have respectively low compression pressure and their compression remains

low even after the addition of engine oil, cylinder head gaskets are leaking. In such a case, replace cyl-
inder head gaskets.

9.

After inspection is completed, install removed parts.

10. Start the engine, and make sure that the engine runs smoothly.

11. Perform trouble diagnosis. If DTC appears, erase it. Refer to 

EC-125, "Description"

.

EM-24

< ON-VEHICLE REPAIR >

DRIVE BELT AUTO TENSIONER AND IDLER PULLEY

ON-VEHICLE REPAIR

DRIVE BELT AUTO TENSIONER AND IDLER PULLEY

Exploded View

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Removal and Installation

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Removal

1.

Remove drive belt. Refer to 

EM-12, "Exploded View"

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• Keep auto-tensioner pulley arm locked after drive belt is removed.

2.

Remove auto-tensioner and idler pulley. Refer to 

EM-12, "Exploded View"

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• Keep auto-tensioner pulley arm locked to install or remove auto-tensioner.

Installation

Installation is the reverse order of removal.

CAUTION:

If there is damage greater than peeled paint, replace drive belt auto-tensioner.

1.

Front timing chain case

2.

Drive belt auto-tensioner

3.

Idler pulley

4.

Idler pulley

Refer to 

GI-4, "Components"

 for symbol marks in the figure.

JPBIA0004ZZ

AIR CLEANER AND AIR DUCT

EM-25

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AIR CLEANER AND AIR DUCT

Exploded View

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Removal and Installation

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REMOVAL

1.

Disconnect mass air flow sensor harness connector.

2.

Disconnect PCV hose.

3.

Remove air cleaner case/mass air flow sensor assembly and air duct/air hose disconnecting their joints.
• Add marks as necessary for easier installation.

4.

Remove mass air flow sensor from air cleaner case, as necessary.

CAUTION:

Handle mass air flow sensor with the following cares.
• Do not shock it.
• Do not disassemble it.
• Do not touch its sensor.

1.

Mass air flow sensor (RH)

2.

Air cleaner filter

3.

Holder

4.

Bracket

5.

Resonator (RH)

6.

Bracket

7.

Grommet

8.

Grommet

9.

Air cleaner case (RH)

10. Clamp

11.

Air duct (RH)

12. PCV hose

13. Air duct (LH)

14. Mass air flow sensor (LH)

15. Air cleaner case (LH)

16. Bracket

17. Resonator (LH)

18. Bracket

19. Clamp

20. PCV hose

A.

To electric throttle control actuator

B.

To rocker cover (left bank)

Refer to 

GI-4, "Components"

 for symbol marks in the figure.

JPBIA0063GB

EM-26

< ON-VEHICLE REPAIR >

AIR CLEANER AND AIR DUCT

INSTALLATION

Note the following, and install in the reverse order of removal.

Inspection

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INSPECTION AFTER REMOVAL

Inspect air duct and resonator assembly for crack or tear.
• If anything found, replace air duct and resonator assembly