Instrumentation Malfunction
Cause
Faulty wiring, loose or corroded terminals
Faulty key switch
Special Information
Test, as outlined in Section 4D
Test, as outlined in Section 4D
Test , as outlined in Section 4D
Faulty gauge
Faulty sender
Radio Noise
Cause
Special Information
A “popping” noise that will increase with engine
RPM. Noise will stop as soon as engine is
turned off.
Ignition System - wrong spark plugs; cracked
distributor cap; cracked coil tower; leaking spark-
plug wires; moisture on ignition components
“High pitched whine” in the radio
Alternator - poor brush contact on the slip rings
A “hissing or crackling” noise when instruments
are jarred with ignition on
Instrumentation - loose connections, or
antennae wire routed too close to instruments
Accessories - bilge pump, bilge blower; fish find-
er, depth locator; cabin heater motor, etc. Dis-
connect one at a time until noise disappears.
Varying unexplained noises
Index
1C-12 - TROUBLESHOOTING
90-823224--2 796
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 454 CID, Mercury MerCruiser 502 CID |
| Model Year | 1993, 1994, 1995, 1996, 1997 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(4 votes, average: 4.5 out of 5)
Marine readers have rated 1993 1997 Mercury-MerCruiser GM V8 454 CID 7.4L and 502 CID 8.2L Marine Engines Service Manual Number 16 4.5 out of 5.0 based on 4 product reviews. Hugely helpful service manual! Perfect. Thank you!
Manuals are all Important for Technician
This book is invaluable if you do your own repairs. Great book.
Could not find a copy until a search brought me here.
Excellent print.
Thank you