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GDI <4G6> -
On-vehicle Service
13A-102
MEASUREMENT OF FUEL HIGH PRESSURE BETWEEN
FUEL PUMP (HIGH PRESSURE) AND INJECTORS
NOTE
Measurement of the fuel pressure between the fuel pump
(high pressure) and the injectors should be carried out after
checking that the fuel pressure between the fuel pump (low
pressure) and the fuel pump (high pressure) is normal.
1. Connect the MUT-
II
to the diagnosis connector.
2. Disconnect the injector intermediate harness connector.
3. Turn the ignition switch to ON.
4. Select “Item No.74” from the MUT-
II
Data list.
5. Crank the engine continuously for 2 seconds or more,
and visually check that there are no fuel leaks from any
parts.
Caution
If any fuel leaks appear, stop cranking immediately
and repair the source of the leak.
6. Check if the fuel pressure is more than 1 MPa immediately
after 20 seconds have passed since cranking was finished.
7. If the fuel pressure is lower than 1 MPa, it means that
there is likely to be a leak in the high-pressure fuel system,
so this system should be checked.
8. Turn the ignition switch to OFF.
9. Connect the injector intermediate harness connector.
10. Start the engine and run at idle.
11. Measure fuel pressure while the engine is running at idle.
Standard value: 4 - 7.5 MPa
12. Check to see that fuel pressure at idle does not drop
even after the engine has been raced several times.
13. If fuel pressure is out of the standard value, troubleshoot
and repair according to the table below.
Symptom
Probable cause
Remedy
D
Fuel pressure too low
D
Fuel pressure drops after racing
Fuel leaking to return side due to poor
fuel pressure regulator (high pres-
sure) valve seating or settled spring
Replace fuel pressure regulator
(high pressure)
Low fuel pump (high pressure)
delivery pressure
Replace the fuel pump
(high pressure)
Fuel pressure too high
Binding valve in fuel pressure
regulator (high pressure)
Replace fuel pressure regulator
(high pressure)
Clogged fuel return hose or pipe
Clean or replace hose or pipe
14. Stop the engine and turn the ignition switch to OFF.
15. Disconnect the MUT-
II
.
Injector intermediate harness
Содержание Space Runner 1998
Страница 35: ...ENGINE 4G6 11A ENGINE 4G9 11B 11A 1 ENGINE CONTENTS 11109000276...
Страница 74: ...NOTES...
Страница 119: ...13A 1 FUEL CONTENTS GASOLINE DIRECT INJECTION GDI 4G6 13A GASOLINE DIRECT INJECTION GDI 4G9 13B FUEL SUPPLY 13C...
Страница 354: ...NOTES...
Страница 355: ...13C 1 FUEL SUPPLY CONTENTS 13509000197 GENERAL INFORMATION 2 FUEL TANK 3...
Страница 418: ...NOTES...
Страница 436: ...NOTES...
Страница 460: ...NOTES...
Страница 519: ...AUTOMATIC TRANSMISSION On vehicle Service 23 59 OIL SEAL LAYOUTsub 04 O A H B C D E F G I J K L M N...
Страница 532: ...NOTES...
Страница 567: ...REAR AXLE 2WD 27A REAR AXLE 4WD 27B 27A 1 REAR AXLE CONTENTS 27109000246...
Страница 660: ...NOTES...
Страница 714: ...NOTES...
Страница 722: ...NOTES...
Страница 732: ...NOTES...
Страница 772: ...NOTES...
Страница 912: ...NOTES...
Страница 913: ...INTERIOR 52A SUPPLEMENTAL RESTRAINT SYSTEM SRS 52B 52A 1 INTERIOR AND SUPPLEMENTAL RESTRAINT SYSTEM SRS CONTENTS...
Страница 954: ...NOTES...