Mazda CX 7. Manual — part 125

FUEL SYSTEM [L3 WITH TC]

01-14–21

01-14

Type B Removal

Caution

• Be careful not to damage the pipe when unlocking the retainer.

Note

• When removing the quick connector, either SST 49 E042 001 or 49 N013 103A.

When using SST 49 N013 103A

1. Follow “BEFORE SERVICE PRECAUTION” and remove dirt from the connecting surfaces before performing

any work operations. (See01-14-4 BEFORE REPAIR PROCEDURE[L3 WITH TC].)

2. Insert the SST into the quick release connector.
3. Pull out the fuel hose straight from the fuel pipe

and disconnect it.

4. Cover the disconnected quick release connector

and fuel pipe with vinyl sheeting or a similar
material to prevent it from scratches or dirt.

When using SST 49 E042 001

Note

• If the quick release connector is removed, replace the retainer with a new one.

1. Follow “BEFORE SERVICE PRECAUTION” and remove dirt from the connecting surfaces before performing

any work operations. (See01-14-4 BEFORE REPAIR PROCEDURE[L3 WITH TC].)

Note

• The retainer is attached to the pipe even after the connector is disconnected.

2. Set the SST parallel to the quick release

connector.

Note

• The quick release connector can be

removed by pushing the center of the
retainer tabs.

3. Hold the center of the retainer tabs with the SST

ends and press the retainer.

4. Pull the connector side and disconnect the quick

release connector.

5. Raise a retainer tab using the SST and remove

the retainer.

6. Cover the disconnected quick release connector

and evaporative hose with vinyl sheeting or a
similar material to prevent it from scratches or dirt.

49 N013 103A

FUEL PIPE

QUICK RELEASE CONNECTOR

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49 E042 001

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49 E042 001

R

RETAINER

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FUEL SYSTEM [L3 WITH TC]

01-14–22

Type C Removal

1. Follow “BEFORE REPAIR PROCEDURE” and remove dirt from the connecting surfaces before performing any

work operations. (See01-14-4 BEFORE REPAIR PROCEDURE[L3 WITH TC].)

2. Move the retainer upward using a small flathead

screwdriver or a similar tool.

3. Pull out the fuel hose straight from the fuel pipe

and disconnect it.

4. Cover the disconnected quick release connector

and fuel pipe with vinyl sheeting or a similar
material to prevent it from scratches or dirt.

Type A Installation

Note

• If the quick release connector O-ring is damaged or has slipped, replace the fuel hose.

• A checker tab is integrated with the quick

release connector for new fuel hoses and
evaporative hoses. Remove the checker tab
from the quick release connector after the
connector is completely engaged with the
fuel pipe.

1. Inspect the fuel hose and fuel pipe sealing

surface for damage and deformation.

• If there is any malfunction, replace it with a

new one.

2. Apply a small amount of clean engine oil to the

sealing surface of the fuel pipe.

3. Reconnect the fuel hose straight to the fuel pipe

until a click is heard.

Note

• If the quick release connector does not move at all, disconnect it, verify that the O-ring is not damaged or

has not slipped, and then reconnect the quick release connector.

4. Lightly pull and push the quick release connector a few times by hand, and then verify that it can move 2.0—

3.0 mm {0.08— 0.12 in} and is connected securely.

5. Inspect all related parts by performing “AFTER REPAIR PROCEDURE”. (See01-14-4 AFTER REPAIR

PROCEDURE[L3 WITH TC].)

RETAINER

QUICK RELEASE
CONNECTOR

FLATHEAD
SCREWDRIVER

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NEW FUEL HOSE

CHECKER TAB

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FUEL SYSTEM [L3 WITH TC]

01-14–23

01-14

Type B Installation

Note

• If the quick release connector O-ring is damaged or has slipped, replace the fuel hose.

• A checker tab is integrated with the quick

release connector for new fuel hoses and
evaporative hoses. Remove the checker tab
from the quick release connector after the
connector is completely engaged with the
fuel pipe.

Caution

• Be sure to replace the retainer with a new

one to prevent gas leakage.

• To prevent evaporative gas leakage, be

sure not to damage the connecting part
between the charcoal canister and pipe,
and the locks between the quick release
connector and retainer. If any of them are damaged, replace the charcoal canister or hose with a
new one.

1. Remove the retainer remaining on the charcoal canister pipe.
2. Install a new retainer to the quick release connector.
3. Reconnect the hose straight to the pipe until a click is heard.
4. Lightly pull and push the quick release connector a few times by hand, and then verify that it is connected

securely.

5. Inspect all related parts by performing “AFTER REPAIR PROCEDURE”. (See01-14-4 AFTER REPAIR

PROCEDURE[L3 WITH TC].)

Type C Installation

Note

• If the quick release connector O-ring is damaged or has slipped, replace the fuel hose.

1. Inspect the fuel hose and fuel pipe sealing surface for damage and deformation.

• If there is any malfunction, replace it with a new one.

2. Install the quick release connector.

• Insert the fuel pipe straight to the end of the

quick release connector.

• Push down the retainer using a finger.

— If the retainer cannot be pushed down,

push the fuel pipe further to the quick
release connector.

3. Lightly pull and push the quick release connector

a few times by hand, and then verify that it is
connected securely.

4. Inspect all related parts by performing “AFTER

REPAIR PROCEDURE”. (See01-14-4 AFTER
REPAIR PROCEDURE[L3 WITH TC].)

End Of Sie

WM: FUEL INJECTOR

FUEL INJECTOR REMOVAL/INSTALLATION[L3 WITH TC]

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Caution

• Disconnecting/connecting the quick release connector without cleaning it may cause damage to

the fuel pipe and quick release connector. Always clean the quick release connector joint area
before disconnecting/connecting using a cloth or soft brush, and make sure that it is free of
foreign material.

Note

• When the fuel pressure sensor replaces, replace a new fuel delivery pipe with a new fuel pressure

sensor.(See 01-14-23 FUEL INJECTOR REMOVAL/INSTALLATION[L3 WITH TC])

NEW FUEL HOSE

CHECKER TAB

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1

2

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FUEL SYSTEM [L3 WITH TC]

01-14–24

1. Complete the “BEFORE REPAIR PROCEDURE”. (See01-14-4 BEFORE REPAIR PROCEDURE[L3 WITH

TC].)

2. Disconnect the negative battery cable.
3. Remove the intake manifold. (See01-13-5 INTAKE AIR SYSTEM REMOVAL/INSTALLATION[L3 WITH TC].)
4. Remove in the order indicated in the table.

.

5. Install in the reverse order of removal.
6. Complete the “AFTER REPAIR PROCEDURE”. (See01-14-4 AFTER REPAIR PROCEDURE[L3 WITH TC].)

High Pressure Line Pipe Removal Note

1. Drain engine coolant. (See01-12-5 ENGINE COOLANT REPLACEMENT[L3 WITH TC].)
2. Disconnect the high pressure line pipe of the high pressure fuel pump. (See01-14-16 HIGH PRESSURE FUEL

PUMP REMOVAL/INSTALLATION[L3 WITH TC].)

(1) Fix the joint nut with a wrench on the high pressure fuel pump side as shown in the figure.
(2) Loosen the high pressure line pipe installation nut.

3. Remove the high pressure line pipe.

SST

8—11.5 N·m
{82—117 kgf·cm,
71—101 in·lbf}

4

2

1

3

5

N·m {kgf·m, ft·lbf}

R

R

17—23
{1.8—2.3, 13—16}

17—23
{1.8—2.3,
13—16}

21.5—25.5
{2.20—2.60, 15.9—18.8}

16—24
{1.7—2.4, 12—17}

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1

High pressure line pipe
(See01-14-24 High Pressure Line Pipe Removal
Note.)
(See01-14-26 High Pressure Line Pipe Installation
Note.)

2

Fuel delivery pipe
(See01-14-26 Fuel Delivery Pipe Installation Note.)

3

Fuel injector bracket

4

Fuel injector
(See01-14-25 Fuel Injector Removal Note.)

5

Relief valve

DO NOT ALLOW JOINT

NUT TO ROTATE

HIGH PRESSURE

LINE PIPE

SPILL VALVE CONTROL

SOLENOID VALVE

JOINT NUT

HIGH PRESSURE LINE

PIPE INSTALLATION NUT

WATER OUTLET CASE

INSTALLATION BOLT

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