Mercury MerCruiser MCM 454 Mag MPI Service Manual page 519

MULTI-PORT FUEL INJECTION DISASSEMBLY AND REASSEMBLY
c. Working from rear of engine to front, insert the first rear left bank fuel injector into
2. Install fuel rail mounting bolts and torque to 105 lb-in. (12 Nm).
3. Install new O-ring on fuel inlet line. Lubricate O-ring using a water/soap solution and
connect line to top hole of fuel rail. Secure fuel line retainer to fuel rail using screw.
MEFI 3 Similar
4. Connect electrical connector at each fuel injector.
5. Install plenum, throttle body and flame arrestor as outlined in this section.
Index
Page 5C-18
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the intake manifold. Next, insert the first rear right bank fuel injector into the fuel rail.
Continue inserting fuel injectors into their respective bores working back and forth
toward front of engine until all fuel injectors are in place.
c
a - Fuel Rail
b - Intake Manifold
c - Rear Right Bank Fuel Injector
d - Rear Left Bank Fuel Injector
b
a - Fuel Rail
b - Fuel Inlet Line
c - O-Rings
d - Fuel Line Retainer
e - Retainer Screw
f - Fuel Rail Mounting Screws
b
a
d
f
c
a
d
e
SERVICE MANUAL NUMBER 23
72798
75725
90-861326--1 MARCH 1999