Mercury MerCruiser MCM 454 Mag MPI User Manual

GENERAL SYSTEM DIAGNOSTICS SERVICE MANUAL NUMBER 23
Page 5E-50 90-861326--1 MARCH 1999
NOTE: The entire test should not be repeated more than once without running the engine
to prevent flooding. (This includes any retest on faulty injectors.)
Test Example
300ms
a
b
c
d
a-Injector
b-1st Reading (Initial Pressure)
c-Fuel Pressure Gauge
d-2nd Reading (Pressure After Drop)
EXAMPLE
Cylin-
der
1 2 3 4 5 6 7 8
1st.
Reading
38 PSI
(262 kPa)
38 PSI
(262 kPa)
38 PSI
(262 kPa)
38 PSI
(262 kPa)
38 PSI
(262 kPa)
38 PSI
(262 kPa)
38 PSI
(262 kPa)
38 PSI
(262 kPa)
2nd
Reading
19 PSI
(131 kPa)
17 PSI
(117 kPa)
21 PSI
(145 kPa)
19 PSI
(131 kPa)
19 PSI
(131 kPa)
19 PSI
(131 kPa)
19 PSI
(131 kPa)
19 PSI
(131 kPa)
Amount
of Drop
19 PSI
(131 kPa)
21 PSI
(145 kPa)
17 PSI
(117 kPa)
19 PSI
(131 kPa)
19 PSI
(131 kPa)
19 PSI
(131 kPa)
19 PSI
(131 kPa)
19 PSI
(131 kPa)
OK
Rich
(Too
Much
Fuel
Drop)
Lean
(Too
Little
Fuel
Drop)
OK OK OK OK OK
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Index

Mercury MerCruiser MCM 454 Mag MPI Specifications

General

Brand	Mercury
Model	MerCruiser MCM 454 Mag MPI
Category	Engine
Language	English