Service Manual

Fuel Supply Lines ISB, ISBe and QSB (Common Rail [...]
Page 6-66 Section 6 - Injectors and Fuel Lines - Group 06
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Finishing Steps
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.
CAUTION
Use caution when disconnecting or removing fuel
lines, replacing filters and priming the fuel system
that fuel is not spilled or drained into the bilge area.
Do not drop or throw filter elements into the bilge
area. The fuel and fuel filters must be discarded in
accordance with local environmental regulations.
• Open the fuel supply valve.
• Prime the fuel system. Refer to Procedure 005-016
Operate the engine and check for leaks.
Prime
WARNING
The fuel pump high-pressure fuel lines and fuel rail
contain very high-pressure fuel. Never loosen any
fittings while the engine is running. Personal injury
and property damage can result.
On marine application engines, open fuel supply and
return valves.
WARNING
Be sure that the fuel inlet and return valves are
returned to the open position before cranking engine.
Engine damage can result if valves are in the wrong
position when engine is cranked or started.
Environmental damage can also occur. Refer to
Procedure Procedure 005-999 (Fuel System Overview)
in Familiarization section for further information.
NOTE: Cycle the key switch at least five times allowing
the lift pump to run 30 seconds on each cycle to properly
prime the fuel system. Refer to Procedure Procedure
005-016 for correct priming procedure.
NOTE: It is not necessary to vent air from the high-
pressure fuel system before starting the engine. Cranking
the engine will prime the fuel system.