Mitsubishi Space Star. Manual - part 51

GDI  – Fuel Pump (High Pressure)

13A-131

INSTALLATION SERVICE POINTS



A



FUEL PUMP (HIGH PRESSURE) INSTALLATION

1.

Apply a small amount of fresh engine oil to the fuel pump
(high pressure) roller and O-ring.

2.

Insert the fuel pump (high pressure) to the cylinder head
ports squarely, and the tighten the mounting bolts
temporarily (a little more tightly than finger-tightening).
Tightening them to the specified torque should be carried
out in later step 



B



.



B



BACK-UP RING B/O-RING/BACK-UP RING A/FUEL
PIPE INSTALLATION

1.

Install the back-up rings and the O-ring as shown in the
illustration.
Caution
(1) Install the back-up ring B facing its cutaway

surface toward the opposite side of the O-ring
as shown in the illustration.

(2) Confirm the outer diameter of the back-up ring

A. Take care not to install the back-up ring for
the fuel pressure sensor by mistake. (Outer
diameter of the back-up ring A: 14.8 mm)

2.

Apply a small amount of fresh engine oil to the O-ring.

Caution
Take care not to let any of the engine oil get inside
the fuel pump (high-pressure) or the delivery pipe
assembly.

3.

Install the fuel pipe into the fuel pump (high pressure)
and the delivery pipe ports squarely. Insert the pipe
securely, being careful not to twisting it, and then tighten
the mounting bolts to the specified torque.

Tightening torque: 11 – 13 Nm

4.

Tighten the temporarily tightened mounting bolts of the
fuel pump (high pressure) in shown odder to 5.0 Nm.

5.

Tighten the bolts to 17 Nm in the order shown in the
illustration. The overall difference in tightening torque
between the four bolts should be within 2 Nm.



C



FUEL RETURN HOSES INSTALLATION

Install the fuel return hoses so that the identification mark
of fuel return hoses comes to the illustrated position.

Cutaway
surface

Back-up ring A

O-ring

Back-up ring B

1

3

4

2

B l u e  m a r k

W h i t e  m a r k

GDI  – Fuel Pump (High Pressure)

13A-132



D



AIR BLEEDING THE HIGH-PRESSURE FUEL
PATH

1.

Air-bleed the high-pressure fuel path with the engine
running at 2000 r/min for 15 seconds or more.

NOTE

When the air is trapped into the high-pressure fuel path
due to the fuel pipe removal, an abnormality in the fuel
pressure causes the output of diagnosis code No. 56.

2.

If diagnosis code No. 56 at the fuel pressure sensor system
is output after the diagnosis code is confirmed by MUT-II,
the code will be erased.

GDI  – Fuel Injector

13A-133

FUEL INJECTOR

REMOVAL AND INSTALLATION

Pre-removal and Post-installation Operation



Engine Cover Removal and Installation 
(Refer to GROUP 11A – Camshaft, Camshaft Oil
Seal.)



Prevention of Fuel Discharge <before removal only>



Fuel Leak Check <after installation only>



Air bleeding the high-pressure fuel path
<after installation only>

1

2

6

4

3

10

9

8

2 2  –  2 6  N m

Apply engine oil to all

O-rings during

installation.

9

10

11

11

5

7

12

13

14

15

16

17

18

19

20

21

22

11  –  1 3  N m

1 0  –  1 2  N m

2 1  –  2 5  N m

1 2  –  1 4  N m

11  –  1 3

N m

Fuel pressure sensor removal steps

1. Fuel pressure sensor connector



A

 

E



2. Flange



E



3. Fuel pressure sensor



D



4. O-ring



D



5. Back-up ring

Fuel injector removal steps



Air cleaner



Throttle body (Refer to P.13A-137.)



Intake manifold (Refer to GROUP 15.)

6. Injector harness
7. Injector harness support bracket



C



8. Fuel pipe



C



9. Back-up ring A



C



10. O-ring



C



11. Back-up ring B



B



12. Injector washer



B



13. Injector holder



B

 

B



14. Delivery pipe and fuel injector as-

sembly



B



15. Insulator



B



16. Injector gasket



B



17. Fuel injector



A



18. Corrugated washer



A



19. Back-up ring A



A



20. O-ring



A



21. Back-up ring B
22. Delivery pipe

GDI  – Fuel Injector

13A-134

REMOVAL SERVICE POINTS



A



FLANGE REMOVAL

If the fuel pressure sensor is reused, make mating marks
on the sensor and the flange.

NOTE

The flange secures sealing performance of fuel pressure
sensor and installation rigidity by bending to deform the shape
at installation. Therefore, make mating marks to install the
flange with the right phase and side. In addition, If the fuel
pressure sensor is replaced with a new one, replace it together
with the flange as a set.



B



DELIVERY PIPE AND FUEL INJECTOR
ASSEMBLY REMOVAL

Remove the delivery pipe with the fuel injector assembly still
attached.

Caution
Be careful not to drop the fuel injector assembly when
removing the delivery pipe.

INSTALLATION SERVICE POINTS



A



BACK-UP RING B/O-RING/BACK-UP RING
A/CORRUGATED WASHER INSTALLATION

1.

Install the back-up rings and the O-ring as shown in the
illustration.
Caution
(1) Install the back-up ring B facing its cutaway

surface toward the opposite side of the O-ring
as shown in the illustration.

(2) Confirm the outer diameter of the back-up ring

A. Take care not to install the back-up ring for
the fuel pressure sensor by mistake. (Outer
diameter of the back-up ring A: 14.8 mm)

2.

Apply petroleum jelly to the corrugated washer to prevent
it from dropping, and then install it to the direction shown.

Caution
The corrugated washer should always be replace with
a new part.



B



FUEL INJECTOR/INJECTOR
GASKET/INSULATOR/DELIVERY PIPE AND FUEL
INJECTOR ASSEMBLY/INJECTOR
HOLDER/INJECTOR WASHER INSTALLATION

1.

Apply a small amount of fresh engine oil to the O-ring.

Caution
Take care not to let any of the engine oil get inside the
delivery pipe.

Flange

Fuel pressure

sensor

Mating marks

Cutaway
surface

Back-up ring A

O-ring

Back-up ring B

 

f

Corrugated washer

Good

No good