Section 7 - Troubleshooting
Page 92
90-865253070 JUNE 2007
Diagnosing EFI Problems
Your authorized Mercury MerCruiser dealer has the proper service tools for diagnosing
problems on Electronic Fuel Injection (EFI) Systems. The Electronic Control Module (ECM)
on these engines has the ability to detect some problems with the system when they occur,
and store a Trouble Code in the ECM's memory. This code can then be read later by a
service technician using a special diagnostic tool.
Engine Guardian System
The Engine Guardian System monitors the critical sensors on the engine for any early
indications of problems. The system will respond to a problem by emitting a continuous
beep and/or reducing engine power in order to provide engine protection.
If Guardian System has been activated, reduce throttle speed. The horn will turn off when
throttle speed is within the allowable limit. Consult an authorized Mercury MerCruiser
dealer for assistance.
Starter Motor Will Not Crank Engine, Or Cranks Slow
Possible Cause
Remedy
Battery switch turned off.
Turn the switch on.
Remote control not in neutral position.
Position the control lever in neutral.
Open circuit breaker or blown fuse.
Check and reset the circuit breaker or replace fuse.
Loose or dirty electrical connections or damaged
wiring.
Check all electrical connections and wires (especially
battery cables). Clean and tighten all faulty
connections.
Bad battery or low battery voltage.
Test the battery and charge if necessary; replace if
bad.
Lanyard stop switch activated.
Check the lanyard stop switch.
Engine Will Not Start Or Is Hard To Start
Possible Cause
Remedy
Lanyard stop switch activated.
Check the lanyard stop switch.
Improper starting procedure.
Read the starting procedure.
Insufficient fuel supply.
Fill fuel tank or open valve.
Faulty ignition system component.
Service the ignition system.
Clogged fuel filter.
Replace fuel filter.
Stale or contaminated fuel.
Drain fuel tank. Fill with fresh fuel.
Fuel line or tank vent line kinked or clogged. Replace kinked lines or blow out lines with compressed air to
remove obstruction.
Faulty wire connections.
Check wire connections.
EFI system fault.
Have EFI System checked by an authorized Mercury
MerCruiser dealer.
Engine Runs Rough, Misses And/Or Backfires
Possible Cause
Remedy
Clogged fuel filter.
Replace filter.
Stale or contaminated fuel.
If contaminated, drain tank. Fill with fresh fuel.
Содержание Black Scorpion
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Страница 36: ...Section 2 Getting to Know Your Power Package Notes Page 28 90 865253070 JUNE 2007 ...
Страница 54: ...Section 4 Specifications Notes Page 46 90 865253070 JUNE 2007 ...
Страница 78: ...Section 5 Maintenance Notes Page 70 90 865253070 JUNE 2007 ...
Страница 98: ...Section 6 Storage Notes Page 90 90 865253070 JUNE 2007 ...