Troubleshooting - Mercury D4.2L Manual

CD49
CD361
Starter Motor Will Not Crank Engine, Or Cranks It Very Slowly
Possible Cause
•
Battery switch turned off
•
Remote control not in neutral position
•
Open circuit breaker or blown fuse
•
Loose or dirty electrical connections or dam-
aged wiring
•
Bad battery
Engine Will Not Start, Or Is Hard To Start
Possible Cause
•
Improper starting procedure
•
Empty fuel tank or fuel shutoff valve closed
•
Faulty mechanical fuel delivery pump
•
Throttle not operating properly
•
Faulty electrical stop-circuit
•
Clogged fuel filters
•
Stale or contaminated fuel
•
Fuel line or tank vent line kinked or
clogged
•
Air in fuel injection system
•
Glow-plugs or glow-plug system inoperative,
if so equipped
•
EDI System fault.
114

Troubleshooting

•
Turn switch on.
•
Position control lever in neutral.
•
Check and reset circuit breaker or replace fuse.
•
Check all electrical connections and wires (especially
battery cables). Clean and tighten faulty connection.
•
Test and replace if bad.
•
Read starting procedure.
•
Fill tank or open valve.
•
Have pump replaced by an Authorized Mer-
Cruiser Dealer, if fuel is present.
•
Check throttle for freedom of movement.
•
Have Authorized MerCruiser Dealer service
electric stop-circuit.
•
Replace filters.
•
If contaminated, drain tank. Fill with fresh fuel.
•
Replace kinked lines or blow out lines with
compressed air to remove obstruction.
•
Purge fuel injection system.
•
Test, and repair or replace components
•
Have EDI System checked by an Authorized
MerCruiser Dealer.
Remedy
Remedy