Before you start
Gather the appropriate supplies and review the specific equipment manual.
- Engine log
- Fuel-system diagram
- Flashlight
Step-by-step instructions
Record the timing
Note whether the engine stalls immediately, after warming up, or only when shifting into gear.
Look at basic fuel conditions
Review tank level, fuel supply valve positions and visible leaks without opening fuel lines.
Read alarms and displays
Capture engine warning lights and any stop-solenoid messages before resetting anything.
Check service history
Review fuel filter replacement, contaminated-fuel history and recent work on the fuel system.
Arrange targeted service
Have a qualified diesel technician test supply restriction, air entry and shutdown circuits.
Safety note
Never loosen injection lines on a running engine; high-pressure fuel can penetrate skin. Avoid restarting in a position where propulsion loss is unsafe.
Key takeaway
The stall pattern is often the best first clue to the cause.
Keep this job on your maintenance schedule
Save the topic as a maintenance task, choose a due date or engine-hour target, and record future service. Free and stored on your device.
Add to my maintenance plannerThis guide is for general education. Follow your equipment manufacturer’s instructions, current navigation guidance and applicable marine safety standards. When uncertain, use a qualified marine professional.