Acura CSX. Instruction — page 164

01

SNR9A00A20326400000FEAT02

SNR9A00A20326428501LBAT10

Special Tools Required

11-325

11-325

Fuel Pressure Test

Fuel Tank Draining

07406-004000B

07AAJ-S6MA150

• Fuel pressure gauge 07406-004000B
• Fuel pressure gauge attachment set 07AAJ-S6MA150

1. Relieve the fuel pressure (see page 11-322).

2. Disconnect the quick-connect fitting. Attach the fuel

pressure gauge set and the fuel pressure gauge.

3. Start the engine, and let it idle.

• If the engine starts, go to step 5.
• If the engine does not start, go to step 4.

4. Check to see if the fuel pump is running: Listen to

the fuel filler port with the fuel fill cap removed.
The fuel pump should run for 2 seconds when the
ignition switch is first turned on.

• If the pump runs, go to step 5.
• If the pump does not run, do the fuel pump circuit

troubleshooting (see page 11-318).

5. Read the fuel pressure gauge. The pressure should

be 330

380 kPa (3.4

3.9 kgf/cm , 48

55 psi).

• If the pressure is OK, the test is complete.
• If the pressure is out of specification, replace the

fuel pressure regulator (see page 11-337) and the
fuel filter (see page 11-337), then recheck the fuel
pressure.

1. Remove the fuel tank unit (see page 11-334).

2. Using a hand pump, a hose, and a container

suitable for fuel, draw the fuel from the fuel tank.

3. Reinstall the fuel tank unit (see page 11-335).

2

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*01

SNR9A00A20326428001MAAT00

11-326

Fuel Supply System

Fuel Line Inspection

Check the fuel system lines and hoses for damage, leaks, and deterioration. Replace any damaged parts.

Make sure the connections are
secure and the quick-connect
fitting covers are firmly locked in place.

08/08/21 14:29:50 61SNR030_110_0326

02

11-327

To FUEL RAIL

To EVAPORATIVE
EMISSION (EVAP)
CANISTER PURGE VALVE

BASE GASKET

FUEL TANK UNIT LOCKNUT

A

B

A:

B:

TOP SIDE

20 °

90 °

19.5 °

115 °

LOCKNUT PLATE

Check all clamps, and make sure they are properly positioned.

Replace.

Replace.

When installing the
fuel fill neck tube,
align the mark on the
tube with the projection
on the fill neck fitting.

Make sure the clamp is
positioned as shown.

Make sure the clamp is
positioned as shown.

There should be
no clearance.

Replace.

08/08/21 14:29:50 61SNR030_110_0327

01

02

03

04

SNR9A00A20326428001BAAT00

Location

Retainer

color

Line

diameter

Manufacturer

11-328

Fuel Supply System

Fuel Line/Quick-Connect Fitting Precautions

A

B

F

H

I

G

A

C

J

K

D

M

L

E

O

N

The fuel line/quick-connect fittings (A), (B), (C), (D), and
(E) connect the fuel rail (F) to fuel feed hose A (G), fuel
feed hose A to fuel feed hose B (H), fuel feed hose B to
the fuel line (I), the fuel line (J) to the fuel tank unit (K),
the fuel vapor line (L) to the EVAP canister (M) and the
fuel tank vapor recirculation tube (N) to the fuel fill pipe
(O). When removing or installing the fuel feed hose, the
fuel tank unit, or the fuel tank, you need to disconnect
or connect the quick-connect fittings.
Pay attention to the following:

• The fuel feed hoses, the fuel line, and the quick-

connect fittings are not heat-resistant; be careful not
to damage them during welding or other heat-
generating procedures.

• The fuel feed hoses, the fuel line, and the quick-

connect fittings are not acid-proof; do not touch them
with a shop towel that was used for wiping battery
electrolyte. Replace them if they come in contact with
electrolyte or something similar.

• When connecting or disconnecting the fuel feed

hoses, the fuel line, and the quick-connect fittings, be
careful not to bend or twist them excessively. Replace
them if they are damaged.

A disconnected quick-connect fitting can be
reconnected, but the retainer on the mating line cannot
be reused once it has been removed from the line.
Replace the retainer when:

• replacing the fuel rail.
• replacing the fuel line.
• replacing the fuel pump.
• replacing the fuel filter.
• replacing the fuel gauge sending unit.
• replacing the EVAP purge line.
• replacing the EVAP canister.
• replacing the fuel tank.
• replacing the fuel fill pipe.
• it has been removed from the line.
• it is damaged.

A

Tokai

Green

6.3 mm
(0.2 in.)

B

Tokai

Blue
green

8 mm
(0.3 in.)

C

Sanoh

White

9.5 mm
(0.4 in.)

D

Sanoh

White

12 mm
(0.5 in.)

E

Tokai

Natural

12 mm
(0.5 in.)

* : This illustration shows K20Z2 engine.

08/08/21 14:29:51 61SNR030_110_0328

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