SSANGYONG Musso Sports N100 2003 Manual page 789

1F1-30 M162 ENGINE CONTROLS
Failure Test
code step
• • • • •
⇒ 1.0 Fuel
pressure:in
idling speed
- When the
vacuum is
applied
⇒ 2.0 Fuel
• • • • •
pressure:in
idling speed
- When the
vacuum is
not applied
⇒ 3.0 • • • • • Fuel system
internal
leakage:
Item Checking method
Connect the fuel
pressure test plug to
the pressure tester
(refer to the flgure on
previous page).
Connect the fuel
pressure test plug to
the pressure tester
(refer to the flgure on
previous page).
Connect the fuel
pressure test plug to
the pressure tester
(refer to the flgure on
previous page).
Requirement
• Engine:in idling
- Close the valve
screw on pressure
tester
Engine:in idling
•
- Close the valve
screw on pressure
tester
• Engine:stop
• After 30 minutes from
engine stop
Specified
Possible cause
value
3.2 - 3.6 bar • ⇒ Fuel pump test
• Fuel pressure
regulator
3.7 - 4.2 bar Fuel pressure
•
regulator
> 3.0 bar • The pressure drops
rapidly:non-return
valve in fuel pump
> 2.5 bar • The pressure drops
slowly:
- Injector test
- Fuel pressure
regulator
- O-ring