Mercury MerCruiser MCM 454 Mag MPI Service Manual page 522

SERVICE MANUAL NUMBER 23
CLEANING AND INSPECTION
Inspect fuel injectors for damage; replace if necessary.
INSTALLATION
IMPORTANT: When replacing injectors, be certain to replace with the identical part
and part number. Other injectors may have the same appearance, yet have a different
part number and be calibrated for a different flow rate. If installed, the wrong injector
would cause performance difficulty or damage to the ECM.
1. Install new O-rings on fuel injectors. Lubricate O-rings using a water/soap solution.
2. Install fuel injectors as outlined in "Fuel Rail" and "Intake Manifold".
3. Install fuel rail, plenum, throttle body and flame arrestor as outlined in this section.
Index
90-861326--1 MARCH 1999
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b
a
75741
MEFI-1 and MEFI-2
a - Fuel Injector
b - O-Ring
MULTI-PORT FUEL INJECTION DISASSEMBLY AND REASSEMBLY
b
a
76078
MEFI-3
Page 5C-21