Why Does My Marine Generator Start and Then Shut Down? #
Marine generators include protection systems designed to automatically stop the diesel engine when potentially unsafe operating conditions are detected.
That means a generator that starts successfully and then shuts down may actually be protecting itself.
Common Causes of Generator Shutdown #
Possible causes include:
- High coolant temperature
- Low oil pressure
- Insufficient raw-water flow
- Damaged impeller
- Fuel-delivery problems
- Restricted fuel filters
- Failed sensors
- Wiring problems
- Generator-controller faults
How Long Does the Generator Run? #
Shutdown timing can provide important diagnostic information.
A generator that stops five seconds after startup may have a different problem from one that runs for thirty minutes and shuts down after becoming hot.
Useful information includes:
- How long the generator runs
- Whether electrical load is applied
- Generator temperature
- Alarm lights
- Fault codes
- Exhaust-water flow
- Whether the problem happens every time
Avoid Repeatedly Restarting the Generator #
If a protection system is shutting the generator down because of overheating or low oil pressure, repeatedly restarting it may expose the engine to additional damage.
The shutdown condition should be understood before the generator is returned to normal service.
All Tech Diesel provides Marine Generator Repair & Service throughout Southwest Florida.
Generator Keeps Shutting Down? #
Tell us when the shutdown occurs and any warnings displayed by the generator.
