Nissan Tiida C11. Manual - part 668

EM-24

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COMPRESSION PRESSURE

COMPRESSION PRESSURE

Inspection

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1.

Warm up engine thoroughly. Then, stop it.

2.

Release fuel pressure. Refer to 

EC-377, "Inspection"

 (EURO-OBD), 

EC-681, "Inspection"

 (WITHOUT

EURO-OBD).

3.

Remove ignition coil and spark plug from each cylinder. Refer to 

EM-47, "Exploded View"

.

4.

Connect an engine tachometer (not required in use of CONSULT-III).

5.

Install a compression tester (B) with an adapter (commercial
service tool) (A) onto spark plug hole.

• Use the adapter whose picking up end inserted to spark plug

hole is smaller than 20 mm (0.79 in) in diameter. Otherwise, it
may be caught by cylinder head during removal.

6.

With accelerator pedal fully depressed, turn ignition switch to “START” for cranking. When the gauge
pointer stabilizes, read the compression pressure and the engine rpm. Perform these steps to check each
cylinder.

CAUTION:

Always use fully a changed battery to obtain the specified engine speed.
• If the engine speed is out of the specified range, check battery liquid for proper gravity. Check engine

speed again with normal battery gravity. 

• If compression pressure is below minimum value, check valve clearances and parts associated with

combustion chamber (Valve, valve seat, piston, piston ring, cylinder bore, cylinder head, cylinder head
gasket). After the checking, measure the compression pressure again.

• 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 gasket is leaking. In such a case, replace cylinder
head gasket.

7.

After inspection is completed, install removed parts.

8.

Start the engine, and confirm that the engine runs smoothly. 

9.

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

EC-469, "Description"

.

PBIC3730E

SBIA0533E

Compression Pressure:

Refer to 

EM-122, "General Specification"

.

DRIVE BELT IDLER PULLEY

EM-25

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ON-VEHICLE REPAIR

DRIVE BELT IDLER PULLEY

Exploded View

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Removal and Installation

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REMOVAL

1.

Remove drive belt. Refer to 

EM-16, "Removal and Installation"

.

2.

Remove the lock nut, and then remove the plate, idler pulley, and washer.

3.

Remove the center shaft together with the spacer with inserting the adjusting bolt.

INSTALLATION

1

: Generator bracket

2

: Center shaft

3

: Spacer

4

: Adjusting bolt

5

:  Washer

6

: Idler pulley

7

:  Plate

PBIC3644E

EM-26

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DRIVE BELT IDLER PULLEY

1.

Insert the center shaft (1) into the slide groove of the spacer (2).
Fully screw in the adjusting bolt (3) in the belt loosening direc-
tion (

).

• At that time, place the flange (a) of the adjusting bolt and the

seat (b) of the center shaft on the spacer.

2.

Place each surface (c, d) of the spacer on the generator bracket.
Install the washer, idler pulley, and plate, and then temporarily
tighten the lock nut.

3.

Installation is in the reverse order of removal.

: 4.4 N·m (0.45 kg-m, 39 in-lb)

PBIC3885E

AIR CLEANER AND AIR DUCT

EM-27

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AIR CLEANER AND AIR DUCT

Exploded View

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Removal and Installation

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REMOVAL

1.

Remove the battery. Refer to 

PG-6, "Removal and Installation"

.

2.

Remove the air duct (inlet).

3.

Remove the air cleaner filter from the air cleaner case. Refer to 

EM-18, "Removal and Installation"

.

4.

Remove the air duct [between air duct (inlet) and air cleaner case] from the air cleaner case. 

5.

Remove the PCV hose.

6.

Remove the air duct (between air cleaner case and electronic throttle control actuator).
• Add marks as necessary for easier installation.

7.

Disconnect harness connector from mass air flow sensor.

8.

Remove air cleaner case.

9.

Remove the mass air flow sensor from the air cleaner case, if necessary.

CAUTION:

• Handle mass air flow sensor carefully and avoid impacts.
• Never touch sensor part.

INSTALLATION

Installation is in the reverse order of removal.

1.

Air cleaner filter

2.

Mass air flow sensor

3.

O-ring

4.

Holder

5.

Air cleaner cover

6.

Air duct

7.

PCV hose

8.

Clip

9.

Air duct (Inlet)

10. Grommet

11.

Air duct

12. Grommet

13. Air cleaner case

A.

To electronic throttle control actuator

B.

To rocker cover

PBIC3645E