Map Sensor - Mercury MerCruiser MCM 454 Mag MPI Service Manual

SERVICE MANUAL NUMBER 23

Map Sensor

1. Relieve fuel pressure from the fuel rail as previously described.
2. Disconnect the fuel line from the fuel rail.
3. Remove the plenum and fuel rail assembly as previously described.
4. Disconnect the electrical connector at the injector harness.
5. Remove the screws, nut, MAP sensor retainer clip and stud from the fuel rail.
6. Remove the map sensor from the intake manifold.
CLEANING AND INSPECTION
1. Clean off any foreign matter with a dry cloth.
2. Inspect for any obvious signs of physical damage to the sensor.
3. Inspect seal for damage.
INSTALLATION
1. Lubricate the seal on the MAP sensor.
2. Install the MAP sensor in the intake manifold.
3. Install the fuel rail, plenum and associated parts as previously described.
Index
90-861326--1 MARCH 1999
Downloaded from https://needmanual.com/
Refer to "Precautions" in this section, BEFORE proceeding.
a - MAP Sensor
b - Intake Manifold
MULTI-PORT FUEL INJECTION DISASSEMBLY AND REASSEMBLY
NOTICE
a
b
75615
Page 5C-47