Fuel System Check Process - SSANGYONG 2004 Rexton 2.7XDi Workshop Manual

DI10-184

FUEL SYSTEM CHECK PROCESS

Method 1
Static Test for Injector Back leak Volume
(refer to 4-3)
(with engine cranking but not running)
Place an empty plastic container under the return of
injector:
Remove IMV and injector connectors, crank for 5
seconds, and check the injector back leak volume.
The fuel length in tube should be over 20 cm.
Replace the injector
Enter new injector C2I data into ECU
after replacing the injector
Perform the initial check again.
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
• Transfer fuel system (air in system), specified fuel used
• Fuel leaks, fuel filter
• Diagnostic Trouble Code
• Wiring harness
• Abnormal noise from injector
in Initial Check?
Check fuel rail pressure (refer to 4-1)
When cranking engine for 5 seconds
after disconnecting IMV connector, is
the rail pressure over 1,050 bar?
Check the injector
back leak volume
High Pressure Pump Test (refer to 4-5)
No
Install the closed rail into high pressure
pump at outlet port. Remove IMV connector
and crank engine for 5 seconds. Is the pres-
Yes
sure over 1,050 bar?
Replace high pressure pump
Initial Check
No
No Abnormality
Yes
Yes
No
Method 2
Dynamic Test for Injector Back leak Volume (refer to 4-4)
1. Warm up engine (coolant temp.: over 60°C), place an
empty plastic container under the return of injector, and
start engine.
2. Run the engine for 30 seconds at idle speed, perform :
fuel system pressure leakage test" with Scan-i, and
check the fuel level in container. It should be over 38 ml.
Yes
No
Check and repair
Check transfer fuel system (refer to 4-2)
Install the transparent tube between fuel
filter and priming pump. Check the trans-
fer fuel system for clogged or air bubbles.
Check if the vacuum pressure is proper.
* Thoroughly clean the components
before installation
(with engine running)
No
Yes
Replace the injector
Enter new injector C2I data into ECU
after replacing the injector
DIAGNOSIS
DI ENG SM - 2004.4