Suzuki Grand Vitara JB416 / JB420 / JB419. Manual — part 189

1G-29 Fuel System: For Diesel Engine Model

Fuel Pressure Relief Procedure

S6JB0A1726002

1) Check that engine is cold.
2) Connect SUZUKI scan tool to DLC (1) with ignition

switch turned OFF.

Special tool
(A): SUZUKI scan tool

3) Turn ON ignition switch.
4) Confirm that fuel high pressure line is not under

pressure by using “Fuel Rail Pressure” under “Data
List” of SUZUKI scan tool.

Fuel Leakage Check Procedure

S6JB0A1726003

1) Prime fuel line using priming pump (1).

2) Check low pressure fuel supply circuit for fuel

leakage.

3) Start engine and run it at idle speed for about 10

seconds.

4) Stop engine and then check for fuel leakage in each

part, which was serviced.

5) Start engine and run it at 4,000 r/min. for about 10

seconds.

6) Stop engine and then check for fuel leakage in each

part, which was serviced.

3. Gasket

15. Fuel filter water detection sensor

27. To fuel injector return hose

4. Fuel pump assembly plate

16. Injection pump

: For detail of component, refer to “Injection Pump
Components: For Diesel Engine Model”.

28. To high pressure pipe between common rail and

injection pump

5. Main fuel level gauge

17. High pressure pipe between injection pump and common

29. To common rail

6. Sub fuel level gauge

18. Common rail

30. Sealing washer

7. Fuel tank belt

19. Common rail cover

31. To fuel return line

8. Fuel feed line

20. Common rail cushion

: 11 N

⋅m (1.1 kgf-m, 8.0 lb-ft)

9. Fuel return line

21. High pressure pipe between common rail and fuel injector

: 50 N

⋅m (5.0 kgf-m, 36.5 lb-ft)

10. Priming pump

22. Fuel injector

: 5 N

⋅m (0.5 kgf-m, 4.0 lb-ft)

11. Fuel filter case

23. Fuel injector bracket

: 22 N

⋅m (2.2 kgf-m, 16.0 lb-ft)

12. Fuel filter

24. Fuel injector return hose

: 25 N

⋅m (2.5 kgf-m, 18.5 lb-ft)

(A)

1

I5JB0A110019-01

1

I5JB0B170002-01

Fuel System: For Diesel Engine Model 1G-30

Water Draining of Fuel Filter

S6JB0A1726023

1) Disconnect negative (–) cable at battery.
2) Place container under fuel filter (1).
3) Loosen bleed screw (2), and drain water until fuel

flow out from fuel filter.

4) Tighten bleed screw (2).

5) Connect negative (–) cable at battery.
6) Check fuel leakage referring to “Fuel Leakage Check

Procedure: For Diesel Engine Model”.

Air Bleeding of Fuel System

S6JB0A1726024

Air bleeding must be carried out when fuel system has
been disassembled or when vehicle ran out of fuel.
Pump priming pump (1) 20 times or more, and then
check engine starts.

Fuel Filter and Fuel Heater Removal and
Installation

S6JB0A1726025

Removal

1) Disconnect negative (–) cable at battery.
2) Disconnect fuel heater connector (1) and fuel filter

water detection sensor connector (2).

3) Clean filter and its surrounding area.
4) Pull out fuel hoses (3) with pushing lock button (4).
5) Plug fuel hoses, fuel filter (5) and fuel heater with

plug cap according to “Precautions on Fuel System
Service: For Diesel Engine Model” for parts number
and handling.

6) Remove fuel filter (5) from its bracket (6).

7) Remove fuel heater (1) and fuel filter (2) from fuel

filter case (3).

1

2

I5JB0B170003-01

1

I5JB0B170002-01

1

5

3

2

3

3

4

I5JB0B170004-01

I5JB0B170005-01

1G-31 Fuel System: For Diesel Engine Model

Installation

CAUTION

!

Be sure to position claw (5) of the fuel filter
case (3) to such position of the fuel heater(1)
as shown in the figure.
If fuel pipes (fuel heater) are not positioned
as specified, an abnormal force is applied to
the fuel hoses and may cause damage to
them.

1) Clean fuel heater and fuel filter case.
2) Install fuel heater (1) and fuel filter (2) to fuel filter

case (3) after applying diesel fuel to its new O-rings
(4).

Tightening torque
Fuel filter case bolt (a): 5 N·m (0.5 kgf-m, 4.0 lb-
ft)

3) Install fuel filter (1) to its bracket.
4) Remove plug cup from fuel hoses (2) and fuel filter.
5) Connect fuel hoses to fuel filter.
6) Connect fuel heater connector (3) and fuel filter

water detection sensor (4).

7) Connect negative (–) cable at battery.
8) Bleed air in fuel system referring to “Air Bleeding of

Fuel System: For Diesel Engine Model”.

9) Check fuel leakage referring to “Fuel Leakage Check

Procedure: For Diesel Engine Model”.

Fuel Heater Inspection

S6JB0A1726026

• Check for terminals of fuel heater for damage.

If damage is found, replace fuel heater.

• Check resistance between terminals of fuel heater

connector.If resistance is out of specification, replace
fuel heater.

Fuel Heater Resistance
Approx. 0.6

Ω

I5JB0B170049-01

I5JB0B170006-01

3

1

2

4

2

I5JB0B170007-01

I5JB0B170008-01

Fuel System: For Diesel Engine Model 1G-32

Fuel Hose Disconnecting and Reconnecting

S6JB0A1726038

WARNING

!

Before starting the following procedure, be sure to observe “Precautions on Fuel System Service: For
Diesel Engine Model” in order to reduce the risk or fire and personal injury.

For Connection Other Than Quick Joint
• Clamp around fuel tank

NOTE
Be sure to install hose to spool of pipe surely.

I6JB0A172002-01

1. Pipe

“a”: 3 – 7 mm (0.12 – 0.28 in.)

“f”: 0 – 2 mm (0.00 – 0.08 in.)

2. Hose

“b”: 5 – 12 mm (0.20 – 0.48 in.)

“g”: 25 – 30 mm (0.99 – 1.18 in.)

3. Clamp

“c”: 33 mm (1.30 in.)

: 2 N

⋅m (0.2 kgf-m, 1.5 lb-ft)

4. Fuel filler hose clamp screw

“d”: 30 mm (1.18 in.)

5. Vehicle leftward

“e”: 38 mm (1.50 in.)