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Section 7 - Troubleshooting
Page 116
90-8M0069751
eng
APRIL 2012
Diagnosing Electronically Controlled Fuel System Problems
A Mercury Diesel authorized repair facility has the proper service tools for diagnosing problems on electronically controlled fuel
systems. The engine control module (ECM) on these engines has the ability to detect 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.
Troubleshooting Charts
Starter Motor Will Not Crank Engine, or Cranks Slow
Possible Cause
Remedy
Battery switch turned off.
Turn switch on.
Remote control not in neutral position.
Position control lever in neutral.
Open circuit breaker or blown fuse.
Check and reset 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 faulty connection.
Bad battery.
Test and replace if bad.
Engine Will Not Start, or Is Hard to Start
Possible Cause
Remedy
Lanyard stop switch activated.
Check lanyard stop switch.
Improper starting procedure.
Read starting procedure.
Empty fuel tank or fuel shut‑off valve closed. Fill tank or open valve.
Throttle not operating properly.
Check the throttle for freedom of movement.
Faulty electrical stop‑circuit.
Have a Mercury Diesel authorized repair facility service the electrical stop
circuit.
Clogged fuel filters.
Replace fuel filters.
Stale or contaminated fuel.
Drain tank. Fill with fresh fuel.
Fuel line or tank vent line kinked or clogged. Replace kinked lines or blow out the lines with compressed air to remove
obstruction.
Air in fuel injection system.
Purge fuel injection system.
Faulty wire connections.
Check wire connections.
Electronic fuel system fault.
Have the electronic fuel system checked by a Mercury Diesel authorized repair
facility.
Engine Runs Rough, Misses, or Backfires
Possible Cause
Remedy
Throttle not operating properly.
Check the throttle for binding or an obstruction.
Idle speed too low.
Have idle speed checked and adjusted by a Mercury Diesel authorized
repair facility.
Clogged fuel or air filters.
Replace fuel or air filters.
Stale or contaminated fuel.
If fuel is contaminated, drain tank. Fill with fresh fuel.
Kinked or clogged fuel line or fuel tank vent line. Replace kinked lines or blow out lines with compressed air to remove
obstruction.
Air in fuel system.
Purge fuel injection system.
Electronic fuel system faulty.
Have electronic system checked by a Mercury Diesel authorized repair
facility.
Содержание Sterndrive QSD 2.0
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Страница 8: ...Page iv 90 8M0069751 eng APRIL 2012...
Страница 14: ...Section 1 Warranty Notes Page 6 90 8M0069751 eng APRIL 2012...
Страница 30: ...Section 2 Getting to Know Your Power Package Notes Page 22 90 8M0069751 eng APRIL 2012...
Страница 54: ...Section 5 Maintenance Page 46 90 8M0069751 eng APRIL 2012 Date Maintenance Performed Engine Hours...
Страница 122: ...Section 6 Storage Notes Page 114 90 8M0069751 eng APRIL 2012...