Service Manual

Injector Supply Lines (High Pressure) ISB, ISBe and QSB (Common Rail [...]
Page 6-84 Section 6 - Injectors and Fuel Lines - Group 06
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Initial Check
WARNING
While testing the injectors, keep hands and body
parts away from the injector nozzle. Fuel coming from
the injector is under extreme pressure and can cause
serious injury by penetrating the skin.
WARNING
Fuel is flammable. Keep all cigarettes, flames, pilot
lights, arcing equipment, and switches out of the
work area and areas sharing ventilation to reduce the
possibility of severe personal injury or death when
working on the fuel system.
WARNING
Drain the fuel into a container, and dispose of
contents in accordance with local environmental
regulations.
WARNING
The fuel pump, high-pressure fuel lines, and fuel rail
contain very high-pressure fuel. Do not loosen any
fittings while the engine is running. Wait at least 10
minutes after shutting down the engine before
loosening any fittings in the high-pressure fuel
system to allow pressure to decrease to a lower level.
Inspect the injector high-pressure supply lines for cracks,
chafe, leaks, and loose or broken brackets.
Remove
NOTE: For removal and installation of the fuel pump to
rail high-pressure line. Refer to Procedure Procedure
005-016 in Section 5.
Remove the injector supply line brace cap screws. Do not
remove braces and isolators from fuel line.
NOTE: It may be necessary to remove the air intake
connection to remove all of the injector supply lines. Refer
to Procedure Procedure 010-080 in Section 10.
Disconnect the injector supply lines from the high-
pressure fuel connectors and from the fuel rail.
Remove the injector supply lines.
Inspect for Reuse
Inspect the high-pressure fuel supply line ferrules for any
signs of burrs or foreign material rounding or cracking;
replace if necessary.
Check for cracks, wear, or pinched areas; replace if
necessary.
Inspect the ends of the high-pressure lines for damaged
sealing surfaces.