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Mercury MerCruiser MCM 7.4L MPI User Manual

Mercury MerCruiser MCM 7.4L MPI
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MULTI-PORT FUEL INJECTION DISASSEMBLY AND REASSEMBLY
SERVICE MANUAL NUMBER 23
90-861326--1 MARCH 1999 Page 5C-53
1. Install knock sensors in engine block. Torque to 12-16 lb-ft (16.3-21.7 Nm).
75678
a
Starboard Side Shown
a-Knock Sensor
2. Connect electrical connector to knock sensors.
Knock Sensor Module
1. Remove the knock sensor module from the rear starboard side side of engine.
75656
a
Shown With Power Steering Cooler Hose Removed
a-Knock Sensor Module
2. Disconnect electrical connector at Knock Sensor (KS) module.
CLEANING AND INSPECTION
1. Clean the external surfaces of the KS module with a dry cloth.
2. Inspect surfaces of KS module for evidence of damage.
IMPORTANT: In the following step, it is very important that the knock sensor be
torqued to the precise specification. Incorrect torquing will result in unsatisfactory
performance. DO NOT
use sealer on threads.
INSTALLATION
1. Mount KS module on electrical bracket.
2. Connect electrical connector to the KS module.
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Mercury MerCruiser MCM 7.4L MPI Specifications

General IconGeneral
BrandMercury
ModelMerCruiser MCM 7.4L MPI
CategoryEngine
LanguageEnglish

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