Marine Diesel Engine Troubleshooting
If your marine diesel engine fails to start it could be for any of the following reasons…
Engine does not turn over:
• Totally flat battery
• Battery connections or fuses
• Faulty switches (battery and starting circuit)
• Starter solenoid
• Starter motor
• Engine locked up –– water or oil in cylinder (or seized up)
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Engine turns over but does not fire:
• Fuel is shut off / no supply
• Low cranking speed: engine in gear; auxiliary equipment engaged or low battery charge
• Cold weather thickens the oil in the crankcase (turn the engine over a few times) also affects
battery cranking efficiency• Engine in poor condition – low compression – too cold
• Poor fuel injection• Check engine stop control has been reset
• No air – emergency shut down stopping air (GM two strokes)
• The pre heater (glow plugs) not operating
• Air or water in fuel
