Section 07 ENGINE MANAGEMENT (DI)
Subsection 03 (COMPONENT INSPECTION AND ADJUSTMENT)
07-03-14 SMR2003_024 _07_03A.FM
Remove pressure gauge and reinstall fuel hose. At
installation apply engine oil on O-ring.
Fuel Pressure Regulator Replacement
Removal
Release the fuel pressure in the system.
Disconnect spark plug cables from spark plugs.
Disconnect the fuel injector wires, if necessary.
1. Push clip toward injector to release connector
Unscrew rail retaining screws.
1. Retaining screws
Gently pull rail up by hand, working each side slight-
ly at a time.
Pull rail out.
Unscrew retaining plate screws.
1. Retaining plate
2. Screws
3. Fuel injector
4. Fuel pressure regulator and cover
5. Air pressure regulator
NOTE: If needed, use a small screwdriver to lift
the fuel pressure regulator.
To remove fuel pressure regulator, pull the fuel
regulator and the cover out of rail.
Installation
For the installation, reverse the removal procedure
but pay attention to the following.
If the same regulator is reinstalled, it is recommend-
ed to change the O-rings.
Insert the fuel pressure regulator into the cover
then install both regulators together in place with
your hand. Do not use any tool.
NOTE: A thin film of injection oil may be applied
on O-ring to ease insertion in rail.
Apply Loctite 243 on rail retaining screws then
torque to 25 N•m (18 lbf•ft).
FUEL INJECTOR
Leakage Test
Testing the fuel injector operation can be per-
formed with the air/fuel rail installed.
The leakage test is validated when performing the
FUEL DELIVERY SYSTEM DIAGNOSTIC FLOW
CHART elsewhere in this section.
WARNING
Wipe off any fuel spillage in the bilge. Fuel is
flammable and explosive under certain con-
ditions. Always work in a well ventilated area.
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2
F12R1AA
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