TROUBLESHOOTING
SERVICE MANUAL NUMBER 24
Noisy Alternator
Cause
Special Information
Loose mounting bolts
Drive belt
Worn, frayed, loose
Loose drive pulley
Worn or dirty bearings
Faulty diode trio or stator
Instrumentation Malfunction
Cause
Special Information
Faulty wiring, loose or corroded terminals
Faulty key switch
Faulty gauge
Test, as outlined in SECTION 4D
Test, as outlined in SECTION 4D
Test , as outlined in SECTION 4D
Faulty sender
Radio Noise
Cause
Special Information
Ignition System - wrong spark plugs,
cracked distributor cap, cracked coil tower,
leaking spark plug wires, moisture on igni-
tion components
A “popping” noise that will increase with
engine rpm. Noise will stop as soon as
engine is turned off.
Alternator - poor brush contact on the slip
rings
A “High pitched whine” in the radio
Instrumentation - loose connections or
antennae wire routed too close to
instruments
A “hissing or crackling” noise when instru-
ments are jarred with ignition on
Accessories - bilge pump, bilge blower;
fish finder, depth locator; cabin heater
motor, etc. Disconnect one at a time until
noise disappears.
Varying unexplained noises
Index
Page 1C-12
90-861327--1 OCTOBER 1999
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 305 CID, Mercury MerCruiser 350 CID |
| Model Year | 1998, 1999, 2000, 2001 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
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Marine readers have rated Mercury MerCruiser Engines Service Manual Number 24 GM V-8 305 CID 350 CID 4.0 out of 4.0 based on 1 product reviews. Great performance engine.
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