MULTI-PORT FUEL INJECTION DISASSEMBLY AND REASSEMBLY
SERVICE MANUAL NUMBER 23
Knock Sensor
NOTICE
Refer to “Precautions” in this section, BEFORE proceeding.
NOTE: The 7.4L MPI has a knock sensor mounted on the port and starboard sides of the
engine block.
REMOVAL
1.
Disconnect electrical connector at knock sensors located just ahead of starter motor.
a
75678
Starboard Side Shown
a - Knock Sensor
2.
Remove both knock sensors from engine block.
CLEANING AND INSPECTION
1.
2.
Clean knock sensors with a dry cloth, paying special attention to threads on base.
Inspect surfaces of knock sensors for signs of wear or physical damage.
INSTALLATION
IMPORTANT: If installing a new knock sensor, be sure to replace it with an identical
part. Knock sensors are very sensitive and designed for each specific application.
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.
Index
Page 5C-52
90-861326--1 MARCH 1999
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1998, 1999, 2000, 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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